Many names have been proposed as possible authors of the Voynich manuscript. Here are only the most popular ones.
Roger Bacon
Marci's 1665 cover letter to Kircher says that, according to his late friend Raphael Mnishovsky, the book had once been bought by Emperor Rudolf II of Bohemia (1552–1612) for 600 ducats — several thousand dollars in today's money. According to the letter, Rudolf (or perhaps Raphael) believed the author to be the Franciscan friar and polymath Roger Bacon (1214–1294).
Even though Marci said that he was "suspending his judgement" about this claim, it was taken quite seriously by Voynich, who did his best to confirm it. His conviction strongly influenced most decipherment attempts for the next 80 years. However, scholars who have looked at the Voynich manuscript and are familiar with Bacon's works have flatly denied that possibility. One should note also that Raphael died in 1644, and the deal must have occurred before Rudolf's abdication in 1611—at least 55 years before Marci's letter.
John Dee
The assumption that Roger Bacon was the author led Voynich to conclude that the person who sold the Voynich manuscript to Rudolf could only be John Dee, a mathematician and astrologer at the court of Queen Elizabeth I, known to have owned a large collection of Bacon's manuscripts. Dee and his scrier (mediumic assistant) Edward Kelley lived in Bohemia for several years where they had hoped to sell their services to the Emperor. However, Dee's meticulously kept diaries do not mention that sale, and make it seem quite unlikely. Anyway, if the Voynich manuscript author is not Bacon, the connection to Dee may just disappear. On the other hand, Dee himself may have written it and spread the rumour that it was originally a work of Bacon's in the hopes of later selling it.
Edward Kelley
Dee's companion in Prague, Edward Kelley, was a self-styled alchemist who claimed to be able to turn copper into gold by means of a secret powder which he had dug out of a Bishop's tomb in Wales. As Dee's scrier, he claimed to be able to invoke angels through a crystal ball, and had long conversations with them—which Dee dutifully noted down. The angel's language was called Enochian, after Enoch, the Biblical father of Methuselah; according to legend, he had been taken on a tour of Heaven by angels, and later written a book about what he saw there. Several people (see below) have suggested that, just as Kelley invented Enochian to dupe Dee, he could have fabricated the Voynich manuscript to swindle the Emperor (who was already paying Kelley for his supposed alchemical expertise). However, if Roger Bacon is not the author of the Voynich manuscript, Kelley's connection to the manuscript is just as vacuous as Dee's.
Wilfrid Voynich
Voynich was often suspected of having fabricated the Voynich manuscript himself. As an antique book dealer, he probably had the necessary knowledge and means; and a "lost book" by Roger Bacon would have been worth a fortune. However, the recent discovery of Baresch's letter to Kircher has all but eliminated that possibility.
Jacobus Sinapius
A photostatic reproduction of the first page of the Voynich manuscript, taken by Voynich sometime before 1921, showed some faint writing that had been erased. With the help of chemicals, the text could be read as the name 'Jacobj `a Tepenece': that would be Jakub Horcicky of Tepenec, in Latin Jacobus Sinapius—a specialist in herbal medicine who was the personal doctor of Rudolf II and curator of his botanical gardens. Voynich, and many other people after him, concluded from this "signature" that Jacobus owned the Voynich manuscript before Baresch, and saw in that a confirmation of Raphael's story. Others have suggested that Jacobus himself could be the author.
However, that writing does not match Jacobus's signature, as found in a document recently located by Jan Hurich. So it is still possible that the writing on f1r was added by a later owner or librarian, and is only this person's guess as to the book's author. (In the Jesuit history books that were available to Kircher, Jesuit-educated Jacobus is the only alchemist or doctor from Rudolf's court who deserves a full-page entry, while, for example, Tycho Brahe is barely mentioned.) Moreover, the chemicals applied by Voynich have so degraded the vellum that hardly a trace of the signature can be seen today; thus there is also the suspicion that the signature was fabricated by Voynich in order to strengthen the Roger Bacon theory.
Johannes Marci
Johannes Marci met Kircher when he led a delegation from Charles University to Rome in 1638; and over the next 27 years, the two scholars exchanged many letters on a variety of scientific subjects. Marci's trip was part of a continuing struggle by the secularist side of the University to maintain their independence from the Jesuits, who ran the rival Clementinum college in Prague. In spite of those efforts, the two universities were merged in 1654, under Jesuit control. It has therefore been speculated that political animosity against the Jesuits led Marci to fabricate Baresch's letters, and later the Voynich manuscript, in an attempt to expose and discredit their "star" Kircher.
Marci's personality and knowledge appear to have been adequate for this task; and Kircher, a "Dr. Know-It-All" who is today remembered more by his egregious mistakes than by his genuine accomplishments, was an easy target. Indeed, Baresch's letter bears some resemblance to a hoax that orientalist Andreas Mueller once played on Kircher. Mueller concocted an unintelligible manuscript and sent it to Kircher with a note explaining that it had come from Egypt. He asked Kircher for a translation, and Kircher, reportedly, produced one at once.
It is worth noting that the only proofs of Georg Baresch's existence are three letters sent to Kircher: one by Baresch (1639), and two by Marci (about a year later). It is also curious that the correspondence between Marci and Kircher ends in 1665, precisely with the Voynich manuscript "cover letter". However, Marci's secret grudge against the Jesuits is pure conjecture: a faithful Catholic, he himself had studied to become a Jesuit, and shortly before his death in 1667 he was granted honorary membership in their Order.
Raphael Mnishovsky
Raphael Mnishovsky, the friend of Marci who was the reputed source of Bacon's story, was himself a cryptographer (among many other things), and apparently invented a cipher which he claimed was uncrackable (ca. 1618). This has led to the theory that he produced the Voynich manuscript as a practical demonstration of said cipher—and made poor Baresch his unwitting "guinea pig". After Kircher published his book on Coptic, Raphael (so the theory goes) may have thought that stumping him would be a much better trophy than stumping Baresch, and convinced the alchemist to ask the Jesuit's help. He would have invented the Roger Bacon story to motivate Baresch. Indeed, the disclaimer in the Voynich manuscript cover letter could mean that Marci suspected a lie. However, there is no definite evidence for this theory.
Anthony Ascham
Dr. Leonell Strong, a cancer research scientist and amateur cryptographer, tried to decipher the Voynich manuscript. Strong said that the solution to the Voynich manuscript was a "peculiar double system of arithmetical progressions of a multiple alphabet". Strong claimed that the plaintext revealed the Voynich manuscript to be written by the 16th century English author Anthony Ascham, whose works include A Little Herbal, published in 1550. Although the Voynich manuscript does contain sections resembling an herbal, the main argument against this theory is that it is unknown where the author of A Little Herbal would have obtained such literary and cryptographic knowledge.
Tuesday, June 9, 2009
Theories about the language
Many theories have been advanced as for the nature of the Voynich manuscript "language". Here is a partial list:
Letter-based cipher
According to this theory, the Voynich manuscript contains a meaningful text in some European language, that was intentionally rendered obscure by mapping it to the Voynich manuscript "alphabet" through a cipher of some sort—an algorithm that operated on individual letters.
This has been the working hypothesis for most decipherment attempts in the 20th century, including an informal team of NSA cryptographers led by William F. Friedman in the early 1950s. Simple substitution ciphers can be excluded, because they are very easy to crack; so decipherment efforts have generally focused on polyalphabetic ciphers, invented by Alberti in the 1460s. This class includes the popular Vigenere cipher, which could have been strengthened by the use of nulls and/or equivalent symbols, letter rearrangement, false word breaks, etc. Some people assumed that vowels had been deleted before encryption. There have been several claims of decipherment along these lines, but none has been widely accepted — chiefly because the proposed decipherment algorithms depended on so many guesses by the user that they could extract a meaningful text from any random string of symbols.
The main argument for this theory is that the use of a weird alphabet by a European author can hardly be explained except as an attempt to hide information. Indeed, Roger Bacon knew about ciphers, and the estimated date for the manuscript roughly coincides with the birth of cryptography as a systematic discipline. Against this theory is the observation that a polyalphabetic cipher would normally destroy the "natural" statistical features that are seen in the Voynich manuscript, such as Zipf's law. Also, although polyalphabetic ciphers were invented about 1467, variants only became popular in the 16th century, somewhat too late for the estimated date of the Voynich manuscript.
Codebook cipher
According to this theory, the Voynich manuscript "words" would be actually codes to be looked up in a dictionary or codebook. The main evidence for this theory is that the internal structure and length distribution of those words are similar to those of Roman numerals—which, at the time, would be a natural choice for the codes. However, book-based ciphers are viable only for short messages, because they are very cumbersome to write and to read.
Steganography
This theory holds that the text of the Voynich manuscript is mostly meaningless, but contains meaningful information hidden in inconspicuous details—e.g. the second letter of every word, or the number of letters in each line. This technique, called steganography, is very old, and was described e.g. by Johannes Trithemius in 1499. Some people suggested that the plain text was to be extracted by a Cardan grille of some sort. This theory is hard to prove or disprove, since stegotexts can be arbitrarily hard to crack. An argument against it is that using a cipher-looking cover text defeats the main purpose of steganography, which is to hide the very existence of the secret message.
Some people have suggested that the meaningful text could be encoded in the length or shape of certain pen strokes. There are indeed examples of steganography from about that time that use letter shape (italic vs. upright) to hide information. However, when examined at high magnification, the Voynich manuscript pen strokes seem quite natural, and substantially affected by the uneven surface of the vellum.
Exotic natural language
The linguist Jacques Guy once suggested that the Voynich manuscript text could be some exotic natural language, written in the plain with an invented alphabet. The word structure is indeed similar to that of many language families of East and Central Asia, mainly Sino-Tibetan (Chinese, Tibetan, and Burmese), Austroasiatic (Vietnamese, Khmer, etc.) and possibly Tai (Thai, Lao, etc.). In many of these languages, the "words" (smallest language units with definite meaning) have only one syllable; and syllables have a rather rich structure, including tonal patterns.
This theory has some historical plausibility. While those languages generally had native scripts, these were notoriously difficult for Western visitors; which motivated the invention of several phonetic scripts, mostly with Latin letters but sometimes with invented alphabets. Although the known examples are much later than the Voynich manuscript, history records hundreds of explorers and missionaries who could have done it—even before Marco Polo's 13th century voyage, but especially after Vasco da Gama discovered the sea route to the Orient in 1499. The Voynich manuscript author could also be a native from East Asia living in Europe, or educated at a European mission.
The main argument for this theory is that it is consistent with all statistical properties of the Voynich manuscript text which have been tested so far, including doubled and tripled words (which have been found to occur in Chinese and Vietnamese texts at roughly the same frequency as in the Voynich manuscript). It also explains the apparent lack of numerals and Western syntactic features (such as articles and copulas), and the general weirdness of the illustrations. Another possible hint are two large red symbols on the first page, which have been compared to a Chinese-style book title, upside down and badly copied. Also, the apparent division of the year into 360 degrees (rather than 365 days), in groups of 15 and starting with Pisces, are features of the Chinese agricultural calendar (jie q`i). The main argument against the theory is the fact that no one (including scholars at the Academy of Sciences in Beijing) could find any clear examples of Asian symbolism or Asian science in the illustrations.
In late 2003, Zbigniew Banasik from Poland proposed that the manuscript is plaintext written in Manchurian language and gave an incomplete translation of the first page of the manuscript: http://www.dcc.unicamp.br/~stolfi/voynich/04-05-20-manchu-theo/
http://www.voynich.net/Arch/2004/05/msg00187.html
http://www.voynich.net/Arch/2004/05/msg00195.html
Polyglot tongue
In his book Solution of the Voynich Manuscript: A liturgical Manual for the Endura Rite of the Cathari Heresy, the Cult of Isis (1987, Leo Levitov declared the manuscript a plaintext transcription of a "polyglot oral tongue". This he defined as 'a literary language which would be understandable to people who did not understand Latin and to whom this language could be read.' He proposed a partial decipherment into a mixture of medieval Flemish with many borrowed Old French and Old High German words.
According to Levitov, the rite of Endura was none other than the assisted suicide ritual famously associated with the Cathar faith (although the reality of this ritual is also in question). He explains that the chimerical plants are not meant to represent any species of flora, but are secret symbols of the faith. The women in the basins with elaborate plumbing represent the suicide ritual itself, which he believed involved venesection: the cutting of a vein to allow the blood to drain into a warm bath. The constellations with no celestial analogue are representative of the stars in Isis' mantle.
This theory is questioned on several grounds. One incongruity is that the Cathar faith is widely understood to have been a Christian gnosticism, and not in any way associated with Isis. Another is that this theory places the book's origins in the twelfth or thirteenth century, which is considerably older than even the adherents to the Roger Bacon theory believe. Levitov offered no evidence beyond his translation for this assertion.
Constructed language
The peculiar internal structure of Voynich manuscript "words" has led William F. Friedman and John Tiltman to arrive independently at the conjecture that the text could be a constructed language in the plain—specifically, a philosophical one. In languages of this class, the vocabulary is organized according to a category system, so that the general meaning of a word can be deduced from its sequence of letters. For example, in the modern constructed language Ro, bofo- is the category of colors, and any word beginning with those letters would name a color: so red is bofoc, and yellow is bofof. (This is an extreme version of the book classification scheme used by many libraries — in which, say, P stands for language and literature, PA for Greek and Latin, PC for Romance languages, etc..)
This concept is quite old, as attested by John Wilkins's Philosophical Language (1668). In most known examples, categories are subdivided by adding suffixes; as a consequence, a text in a particular subject would have many words with similar prefixes — for example, all plant names would begin with the similar letters, and likewise for all diseases, etc. This feature could then explain the repetitious nature of the Voynich text. However, no one has been able to assign a plausible meaning to any prefix or suffix in the Voynich manuscript; and, moreover, known examples of philosophical languages are rather late (17th century).
Hoax
The bizarre features of the Voynich manuscript text (such as the doubled and tripled words) and the suspicious contents of its illustrations (such as the chimeric plants) have led many people to conclude that the manuscript may in fact be a hoax.
In 2003, computer scientist Gordon Rugg showed that text with characteristics similar to the Voynich manuscript could have been produced using a table of word prefixes, stems, and suffixes, which would have been selected and combined by means of a perforated paper overlay. The latter device, known as a Cardan grille, was invented around 1550 as an encryption tool. However, the pseudo-texts generated in Gordon Rugg's experiments do not have the same words and frequencies as the Voynich manuscript; its resemblance to "Voynichese" is only visual, not quantitative. Since one can produce random gibberish that resembles English (or any other language) to a similar extent, these experiments are not yet convincing.
Letter-based cipher
According to this theory, the Voynich manuscript contains a meaningful text in some European language, that was intentionally rendered obscure by mapping it to the Voynich manuscript "alphabet" through a cipher of some sort—an algorithm that operated on individual letters.
This has been the working hypothesis for most decipherment attempts in the 20th century, including an informal team of NSA cryptographers led by William F. Friedman in the early 1950s. Simple substitution ciphers can be excluded, because they are very easy to crack; so decipherment efforts have generally focused on polyalphabetic ciphers, invented by Alberti in the 1460s. This class includes the popular Vigenere cipher, which could have been strengthened by the use of nulls and/or equivalent symbols, letter rearrangement, false word breaks, etc. Some people assumed that vowels had been deleted before encryption. There have been several claims of decipherment along these lines, but none has been widely accepted — chiefly because the proposed decipherment algorithms depended on so many guesses by the user that they could extract a meaningful text from any random string of symbols.
The main argument for this theory is that the use of a weird alphabet by a European author can hardly be explained except as an attempt to hide information. Indeed, Roger Bacon knew about ciphers, and the estimated date for the manuscript roughly coincides with the birth of cryptography as a systematic discipline. Against this theory is the observation that a polyalphabetic cipher would normally destroy the "natural" statistical features that are seen in the Voynich manuscript, such as Zipf's law. Also, although polyalphabetic ciphers were invented about 1467, variants only became popular in the 16th century, somewhat too late for the estimated date of the Voynich manuscript.
Codebook cipher
According to this theory, the Voynich manuscript "words" would be actually codes to be looked up in a dictionary or codebook. The main evidence for this theory is that the internal structure and length distribution of those words are similar to those of Roman numerals—which, at the time, would be a natural choice for the codes. However, book-based ciphers are viable only for short messages, because they are very cumbersome to write and to read.
Steganography
This theory holds that the text of the Voynich manuscript is mostly meaningless, but contains meaningful information hidden in inconspicuous details—e.g. the second letter of every word, or the number of letters in each line. This technique, called steganography, is very old, and was described e.g. by Johannes Trithemius in 1499. Some people suggested that the plain text was to be extracted by a Cardan grille of some sort. This theory is hard to prove or disprove, since stegotexts can be arbitrarily hard to crack. An argument against it is that using a cipher-looking cover text defeats the main purpose of steganography, which is to hide the very existence of the secret message.
Some people have suggested that the meaningful text could be encoded in the length or shape of certain pen strokes. There are indeed examples of steganography from about that time that use letter shape (italic vs. upright) to hide information. However, when examined at high magnification, the Voynich manuscript pen strokes seem quite natural, and substantially affected by the uneven surface of the vellum.
Exotic natural language
The linguist Jacques Guy once suggested that the Voynich manuscript text could be some exotic natural language, written in the plain with an invented alphabet. The word structure is indeed similar to that of many language families of East and Central Asia, mainly Sino-Tibetan (Chinese, Tibetan, and Burmese), Austroasiatic (Vietnamese, Khmer, etc.) and possibly Tai (Thai, Lao, etc.). In many of these languages, the "words" (smallest language units with definite meaning) have only one syllable; and syllables have a rather rich structure, including tonal patterns.
This theory has some historical plausibility. While those languages generally had native scripts, these were notoriously difficult for Western visitors; which motivated the invention of several phonetic scripts, mostly with Latin letters but sometimes with invented alphabets. Although the known examples are much later than the Voynich manuscript, history records hundreds of explorers and missionaries who could have done it—even before Marco Polo's 13th century voyage, but especially after Vasco da Gama discovered the sea route to the Orient in 1499. The Voynich manuscript author could also be a native from East Asia living in Europe, or educated at a European mission.
The main argument for this theory is that it is consistent with all statistical properties of the Voynich manuscript text which have been tested so far, including doubled and tripled words (which have been found to occur in Chinese and Vietnamese texts at roughly the same frequency as in the Voynich manuscript). It also explains the apparent lack of numerals and Western syntactic features (such as articles and copulas), and the general weirdness of the illustrations. Another possible hint are two large red symbols on the first page, which have been compared to a Chinese-style book title, upside down and badly copied. Also, the apparent division of the year into 360 degrees (rather than 365 days), in groups of 15 and starting with Pisces, are features of the Chinese agricultural calendar (jie q`i). The main argument against the theory is the fact that no one (including scholars at the Academy of Sciences in Beijing) could find any clear examples of Asian symbolism or Asian science in the illustrations.
In late 2003, Zbigniew Banasik from Poland proposed that the manuscript is plaintext written in Manchurian language and gave an incomplete translation of the first page of the manuscript: http://www.dcc.unicamp.br/~stolfi/voynich/04-05-20-manchu-theo/
http://www.voynich.net/Arch/2004/05/msg00187.html
http://www.voynich.net/Arch/2004/05/msg00195.html
Polyglot tongue
In his book Solution of the Voynich Manuscript: A liturgical Manual for the Endura Rite of the Cathari Heresy, the Cult of Isis (1987, Leo Levitov declared the manuscript a plaintext transcription of a "polyglot oral tongue". This he defined as 'a literary language which would be understandable to people who did not understand Latin and to whom this language could be read.' He proposed a partial decipherment into a mixture of medieval Flemish with many borrowed Old French and Old High German words.
According to Levitov, the rite of Endura was none other than the assisted suicide ritual famously associated with the Cathar faith (although the reality of this ritual is also in question). He explains that the chimerical plants are not meant to represent any species of flora, but are secret symbols of the faith. The women in the basins with elaborate plumbing represent the suicide ritual itself, which he believed involved venesection: the cutting of a vein to allow the blood to drain into a warm bath. The constellations with no celestial analogue are representative of the stars in Isis' mantle.
This theory is questioned on several grounds. One incongruity is that the Cathar faith is widely understood to have been a Christian gnosticism, and not in any way associated with Isis. Another is that this theory places the book's origins in the twelfth or thirteenth century, which is considerably older than even the adherents to the Roger Bacon theory believe. Levitov offered no evidence beyond his translation for this assertion.
Constructed language
The peculiar internal structure of Voynich manuscript "words" has led William F. Friedman and John Tiltman to arrive independently at the conjecture that the text could be a constructed language in the plain—specifically, a philosophical one. In languages of this class, the vocabulary is organized according to a category system, so that the general meaning of a word can be deduced from its sequence of letters. For example, in the modern constructed language Ro, bofo- is the category of colors, and any word beginning with those letters would name a color: so red is bofoc, and yellow is bofof. (This is an extreme version of the book classification scheme used by many libraries — in which, say, P stands for language and literature, PA for Greek and Latin, PC for Romance languages, etc..)
This concept is quite old, as attested by John Wilkins's Philosophical Language (1668). In most known examples, categories are subdivided by adding suffixes; as a consequence, a text in a particular subject would have many words with similar prefixes — for example, all plant names would begin with the similar letters, and likewise for all diseases, etc. This feature could then explain the repetitious nature of the Voynich text. However, no one has been able to assign a plausible meaning to any prefix or suffix in the Voynich manuscript; and, moreover, known examples of philosophical languages are rather late (17th century).
Hoax
The bizarre features of the Voynich manuscript text (such as the doubled and tripled words) and the suspicious contents of its illustrations (such as the chimeric plants) have led many people to conclude that the manuscript may in fact be a hoax.
In 2003, computer scientist Gordon Rugg showed that text with characteristics similar to the Voynich manuscript could have been produced using a table of word prefixes, stems, and suffixes, which would have been selected and combined by means of a perforated paper overlay. The latter device, known as a Cardan grille, was invented around 1550 as an encryption tool. However, the pseudo-texts generated in Gordon Rugg's experiments do not have the same words and frequencies as the Voynich manuscript; its resemblance to "Voynichese" is only visual, not quantitative. Since one can produce random gibberish that resembles English (or any other language) to a similar extent, these experiments are not yet convincing.
Theories about contents and purpose
The overall impression given by the surviving leaves of the manuscript suggests that it was meant to serve as a pharmacopoeia or to address topics in medieval or early modern medicine. However, the puzzling details of illustrations have fueled many theories about the book's origins, the contents of its text, and the purpose for which it was intended. Here are only a few of them:
Herbal
The first section of the book is almost certainly an herbal, but attempts to identify the plants, either with actual specimens or with the stylized drawings of contemporary herbals, have largely failed. Only a couple of plants (including a wild pansy and the maidenhair fern) can be identified with some certainty. Those "herbal" pictures that match "pharmacological" sketches appear to be "clean copies" of these, except that missing parts were completed with improbable-looking details. In fact, many of the plants seem to be composite: the roots of one species have been fastened to the leaves of another, with flowers from a third.
Sunflowers
Brumbaugh believed that one illustration depicted a New World sunflower, which would help date the manuscript and open up intriguing possibilities for its origin. However, the resemblance is slight, especially when compared to the original wild species; and, since the scale of the drawing is not known, the plant could be many other members of the same family — which includes the common daisy, chamomile, and many other species from all over the world.
Alchemy
The basins and tubes in the "biological" section may seem to indicate a connection to alchemy, which would also be relevant if the book contained instructions on the preparation of medical compounds. However, alchemical books of the period share a common pictorial language, where processes and materials are represented by specific images (eagle, toad, man in tomb, couple in bed, etc.) or standard textual symbols (circle with cross, etc.); and none of these could be convincingly identified in the Voynich manuscript.
Alchemical herbal
Sergio Toresella, an expert on ancient herbals, pointed out that the Voynich manuscript could be an alchemical herbal—which actually had nothing to do with alchemy, but was a bogus herbal with invented pictures, that a quack doctor would carry around just to impress his clients. Apparently there was a small cottage industry of such books somewhere in northern Italy, just at the right epoch. However, those books are quite different from the Voynich manuscript in style and format; and they were all written in plain language.
Astrological herbal
Astrological considerations frequently played a prominent role in herb gathering, blood-letting and other medical procedures common during the likeliest dates of the manuscript (see, for instance, Nicholas Culpeper's books). However, apart from the obvious Zodiac symbols, and one diagram possibly showing the classical planets, no one has been able to interpret the illustrations within known astrological traditions (European or otherwise).
Microscopes and telescopes
A circular drawing in the "astronomical" section depicts an irregularly shaped object with four curved arms, which some have interpreted as a picture of a galaxy, which could only be obtained with a telescope. Other drawings were interpreted as cells seen through a microscope. This would suggest an early modern, rather than a medieval, date for the manuscript's origin. However, the resemblance is rather questionable: on close inspection, the central part of the "galaxy" looks rather like a pool of water.
Multiple authors
Prescott Currier, a US Navy cryptographer who worked with the manuscript in the 1970s, observed that the pages of the "herbal" section could be separated into two sets, A and B, with distinctive statistical properties and apparently different handwritings. He concluded that the Voynich manuscript was the work of two or more authors who used different dialects or spelling conventions, but who shared the same script. However, recent studies have questioned this conclusion. A handwriting expert who examined the book saw only one hand in the whole manuscript. Also, when all sections are examined, one sees a more gradual transition, with herbal A and herbal B at opposite ends. Thus, Prescott's observations could simply be the result of the herbal sections being written in two widely separated epochs.
Herbal
The first section of the book is almost certainly an herbal, but attempts to identify the plants, either with actual specimens or with the stylized drawings of contemporary herbals, have largely failed. Only a couple of plants (including a wild pansy and the maidenhair fern) can be identified with some certainty. Those "herbal" pictures that match "pharmacological" sketches appear to be "clean copies" of these, except that missing parts were completed with improbable-looking details. In fact, many of the plants seem to be composite: the roots of one species have been fastened to the leaves of another, with flowers from a third.
Sunflowers
Brumbaugh believed that one illustration depicted a New World sunflower, which would help date the manuscript and open up intriguing possibilities for its origin. However, the resemblance is slight, especially when compared to the original wild species; and, since the scale of the drawing is not known, the plant could be many other members of the same family — which includes the common daisy, chamomile, and many other species from all over the world.
Alchemy
The basins and tubes in the "biological" section may seem to indicate a connection to alchemy, which would also be relevant if the book contained instructions on the preparation of medical compounds. However, alchemical books of the period share a common pictorial language, where processes and materials are represented by specific images (eagle, toad, man in tomb, couple in bed, etc.) or standard textual symbols (circle with cross, etc.); and none of these could be convincingly identified in the Voynich manuscript.
Alchemical herbal
Sergio Toresella, an expert on ancient herbals, pointed out that the Voynich manuscript could be an alchemical herbal—which actually had nothing to do with alchemy, but was a bogus herbal with invented pictures, that a quack doctor would carry around just to impress his clients. Apparently there was a small cottage industry of such books somewhere in northern Italy, just at the right epoch. However, those books are quite different from the Voynich manuscript in style and format; and they were all written in plain language.
Astrological herbal
Astrological considerations frequently played a prominent role in herb gathering, blood-letting and other medical procedures common during the likeliest dates of the manuscript (see, for instance, Nicholas Culpeper's books). However, apart from the obvious Zodiac symbols, and one diagram possibly showing the classical planets, no one has been able to interpret the illustrations within known astrological traditions (European or otherwise).
Microscopes and telescopes
A circular drawing in the "astronomical" section depicts an irregularly shaped object with four curved arms, which some have interpreted as a picture of a galaxy, which could only be obtained with a telescope. Other drawings were interpreted as cells seen through a microscope. This would suggest an early modern, rather than a medieval, date for the manuscript's origin. However, the resemblance is rather questionable: on close inspection, the central part of the "galaxy" looks rather like a pool of water.
Multiple authors
Prescott Currier, a US Navy cryptographer who worked with the manuscript in the 1970s, observed that the pages of the "herbal" section could be separated into two sets, A and B, with distinctive statistical properties and apparently different handwritings. He concluded that the Voynich manuscript was the work of two or more authors who used different dialects or spelling conventions, but who shared the same script. However, recent studies have questioned this conclusion. A handwriting expert who examined the book saw only one hand in the whole manuscript. Also, when all sections are examined, one sees a more gradual transition, with herbal A and herbal B at opposite ends. Thus, Prescott's observations could simply be the result of the herbal sections being written in two widely separated epochs.
Photos (Part 1)
Scanned Voynich Manuscript pictures:
Click on image to see at large
1v, 2r
2v, 3r
3v, 4r
4v, 5r
5v, 6r
6v, 7r
7v, 8r
8v, 9r
9v, 10r
10v, 11r
11v
13r
Click on image to see at large
1v, 2r
2v, 3r
3v, 4r
4v, 5r
5v, 6r
6v, 7r
7v, 8r
8v, 9r
9v, 10r
10v, 11r
11v
13r
Photos (Part 2)
13v, 14r
14v, 15r
15v, 16r
16v, 17r
17v, 18r
18v, 19r
19v, 20r
20v, 21r
21v, 22r
22v, 23r
23v, 24r
24v, 25r
25v, 26r
26v, 27r
27v, 28r
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