Past analysis and proposed solutions

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Introduction

This page, more than any other, derives from the printed literature, especially D'Imperio, Kahn and Tiltman . Analysis dating from after 1990 is only summarised here. It is presented more fully in subsequent sections.

The beginning

Wilfrid Voynich, convinced that the MS was an important historical document, wanted to have it deciphered, and to this end he supplied photostats to several experts in various fields of medieval research.

Kahn names in this respect: paleographer H. Omont of the Paris Bibliothèque Nationale (who had written a learned article about a 15th-C cryptographic MS on alchemy), Prof. A.G. Little, a foremost authority on Bacon, a Harvard authority of anatomy, George Fabyan of the Riverbank Laboratories, the vice president of the Royal Astronomical Society in London, and 'even' Dom Aidan, Cardinal Gasquet, prefect of the Vatican Archives. Almost certainly these and others tried to solve the puzzle. Among these, in 1917, was John M. Manly, then second in command of Yardley's MI-8. But he failed, and so did Yardley.

Newbold and Manly

In 1919, some of the reproductions of the Voynich MS reached one William Romaine Newbold, a professor of philosophy at the University of Pennsylvania. He set to work and decided that the Voynich MS is based on a very complicated cipher, involving anagrams of sections of 55 to 110 characters. He presented plain text solutions of various pages of the MS, indicating that it was written by Roger Bacon, and that Bacon had invented and used both a telescope and a microscope. He presented these results in April 1921, accompanied by Wilfrid Voynich's own presentation of the history of the MS (described in the previous page) and a presentation about he validity of Newbold's claims by an eminent professor of medicine: C.E. McClung.

In 1926 Newbold died, and the book that he had planned to write was published posthumously by his friend Roland Grubb Kent, in 1928. His results were supported by such famous people as Étienne Gilson and Raoul Carton.

Among others, Newbold identified one page of the MS as a depiction of the great Andromeda nebula. The illustration shows a clear spiral structure and the deciphered text includes words referring to a spiral in the sky. The problem is that the spiral structure of this nebula can only be distinguished by modern telescopes (and this was achieved first not long before Newbold's days).

In 1931 John Manly wrote a critical paper about Newbold's theory, exposing its important weaknesses. Newbold did not use the letters of the Voynich MS itself, but the irregularities of the edges of the letters as seen under a magnifying glass, which he converted to letters. The unreliability of a soluition based on anagraming was however the most important objection. Newbold and all those who followed his belief were essentially disgraced and this has had the effect of scaring off most serious researchers from the Voynich MS.

It should be noted that there are still defenders of Newbold's solution, as evidenced by the >> a web page by Michel Theroux.

Manly also left a statement that the solution of the Voynich MS is a relatively simple substitution cipher with extensive use of nulls. It has not been understood what he meant.

The Catholic University of America

In 1931, Mrs Voynich brought a photostatic copy of the MS to Prof. H. Hyvernat of Catholic University. Hyvernat was a well-known expert on near-Eastern languages. In 1910 he had discovered a major collection of Coptic Manuscripts, and he had since been engaged in a major effort to ensure that the collection could stay together, rather than be scattered in different libraries all over the world. The Pierpont Morgan library in New York was found willing to purchase the entire collection, and it is worth mentioning that Wilfrid Voynich was also dealing with this library on a regular basis, and has corresponded with Hyvernat on the subject of other MSs.

Returning to the Voynich MS, both Hyvernat and his assistant, one Fr. Theodore Petersen, were immediately attracted to the problem presented by the MS. Prof. Hyvernat was too busy (and he also suffered from serious health problems) to spend much time on it. Fr. Petersen was not.

Theodore C. Petersen
Fr. Petersen started by making a complete photocopy of the photostats. He then embarked on the project of making a hand copy of the Voynich MS, using also the original MS kept in a safe deposit vault in New York, in the case of difficult passages. He completed it in 1944. Each page of this transcription includes comments about what it might represent. He also indicates odd character sequences and highlights frequent words. He includes many tentative plant identifications in the herbal section, using especially material by Holm and O'Neill (see below). He has also made a complete concordance of the words in the MS, but I have not seen this.

He worked on the Voynich MS until his death, but apart from the many notes on his hand transcription, no theories or conclusions have survived. At his death, his material was given to Friedman (see below) and an inventory was made by Tiltman (see below). The material is now kept in the >> George C. Marshall Library and Archives, Lexington (Va).

Theodor Holm
A Danish botanist and zoologist (not Dutch as reported by D'Imperio) who worked at the Catholic University and identified 16 plant species, all typically European (D'Imperio section 3.3.1). Quoted frequently in the hand transcription of Petersen.

Hugh O'Neill
Benedictine monk and botanist at the Catholic University who identified some plants as being New-World species. (A list will be included here). He is also quoted frequently in the hand transcription of Petersen.
See his publication of the new-world plant identifications.

Some scientists and historians

Erwin Panofsky
This famous expert on the work of Albrecht Dürer was interested in the Voynich MS, and he was asked some questions about it. His answers are provided at another page at this web site.

Richard Salomon
From D'Imperio and Panofsky we know that he suggested the following reading of some phrases in the Voynich MS (which are in the Latin alphabet): der Musdel on f66r and so nimm geiss milch on f116v.

Charles Singer
Herbal expert. See D'Imperio.

Feely

Source: D'Imperio, section 5.2, based among others on Tiltman.
In 1943, a Rochester (N.Y.) lawyer, Joseph Martin Feely, published a book in which he announced his solution of the Voynich MS. His solution essentially proposes that the Voynich MS text results from a single substitution of highly abbreviated Latin. He does not say so specifically, but hints that the writer of the Voynich MS is indeed Roger Bacon. It is worth noting that Feely never obtained access to copies of the MS and had to work from illustrations in Kent & Newbold.
To quote D'Imperio:
Unfortunately for Feely, however, no other student has accepted his solution as valid
And she also quotes Tiltman (p.6):
His unmethodical method produced text in unacceptable medieval Latin, in unauthentic abbreviated forms.

Some examples of his results are also given in D'Imperio (Fig 25). These are all from f78r. I'm using parentheses to indicate his ligatures.

ScriptSubstitutionMeaning
okeedldlo FEMMININOfemminino
okeedy FEMMINfemmin
daraloCThy ISTSNF(UNDU)(NTR)istis infunduntur
deeedaly IMMCISN(NTR)immiscuntur / imcistinantur
okaral FESTSNfestivi sunt

Strong

Prof. Leonell C. Strong was a medical scientist from Yale University and became attracted to the Voynich MS by O'Neill's publication. Working from illustrations in Newbold's book of a few pages, he devised a complicated polyalphabetic substitution cipher in which he saw the solution of the MS. The details of his system were not disclosed and can only be partly reconstructed. His work sheets and >> correspondence have been made available on the web. He concluded that the MS was written by Anthony Askham, the lesser known brother of Roger Askham. Some of his plaintext, which has been heavily criticised as being unrealistic, is given here:

When skuge of tun'e -bag rip, seo uogon kum sli of se mosure-issued ped-stans skubent, stokked kimbo-elbow crawknot.

Some problems with this solution are:

The name of the proposed author (Askham) is read from the deciphered plain text so also this must be taken with some caution. There are still students of the Voynich MS who support the solution of Strong.

William and Elizebeth Friedman

The involvement of especially William Friedman with the Voynich MS has been the subject of dedicated publications, most recently by J. Reeds. This short summary cannot do justice to Friedman's work. (See also D'Imperio Section 6.5).

William F. Friedman (????-1969) is remembered as one of the world's foremost cryptologers. He already became involved with the Voynich MS when, together with Manly, he demonstrated the invalidity of Newbold's theory. Apart from the fact that he spent some time on the MS himself, he also tried very hard to interest other scholars in it. In 1944 he brought together what later became known as the First Study Group (FSG). During his work with them, he developed the theory that the Voynich MS represented a text in a synthetic language (constructed according to strict logical principles).

First Study Group
(See also D'Imperio Section 6.2). The First Study Group (FSG) was active from 1944 to 1946 and consisted of (at least) the following people: (<Reeds)
Robert A. Caldwell
G. E. McCracken
Thomas A. Miller
Frances Puckett, later Frances Wilbur
Mark Rhoads
William M. Seaman

This group, composed of specialists in a wide variety of fields, was doing war work in Washington and awaiting demobilisation. They agreed to get together after working hours and study the Voynich MS under Friedman's leadership. Plans were made for devising a transcription alphabet, and producing a complete transcription in computer-readable form They transcribed most of the Voynich MS.

Second Study Group
See D'Imperio Section 6.4.
They were active from 1962-1963. Jim Reeds has researched also their work.

John Tiltman

See D'Imperio Section 6.6.
References to his article(s)
Also wrote about Petersen.

Robert S. Brumbaugh

(D'Imperio section 5.4). Brumbaugh, professor of medieval philosophy, became interested in the Voynich MS during the '30's, and was particularly fascinated by O'Neill's publication about the American plant species. He became a follower of the hypothesis that the MS was a deliberate fraud by Dee and/or Kelly in order to dupe emperor Rudolph II, but that there was an underlying text which he tried to decipher with a code which maps all roman characters (many-to-one) onto the numbers 0-9, and these were mapped (one-to-many) onto the Voynich MS.

Using this system, Brumbaugh published solutions of some plant labels and of many of the zodiac labels. (Include references here). D'Imperio is quite supportive of Brumbaugh's theories, but despite the multiple degrees of freedom in his cipher, the produced plaintext is anything other than convincing. I will include some of his zodiac (star) label decryptions here (later) to show this.

William Ralph Bennett

Bennett, another Yale professor, used the Voynich MS in a book about problem solving with the computer. (Include ref). Rather than presenting a theory about the meaning of the Voynich MS, Bennett concentrated on the statistics of the text and finding measures of its properties. He was probably the first to note the low entropy of the Voynich MS text, which is discussed extensively in the analysis section of this web site. The only language he found with an entropy similar to the Voynich MS was Hawaiian, without suggesting a connection, though.

Jeffrey Krischer

While still a student, he wrote a paper also investigating the text properties of the Voynich MS. This paper is extremely difficult to find, and we only have D'Imperio's summary analysis of it.

Mary E. D'Imperio

She organised a symposium in 1972, the transcript of which is available on-line.
She wrote the well-known monograph, summarising all recorded work about the Voynich MS.
She also wrote several papers about different features of the MS text (references, one on-line, to be added).

Prescott Currier

See D'Imperio Section 6.8.
His presentation at the 1972 Symposium is available in Postscript form (ref).
Further material is about his discovery of different hands and different "languages" in the Voynich MS is discussed extensively at this web site. (Links to be added).

Alfred Werner
Quoted in Blunt and Raphael, p.89.

A.G. Watson
Identified foliation on Voynich MS to be in the hand of John Dee (but this is still contested by other Dee experts).

John Stojko

Stojko proposed in a book published in 1978 that the Voynich MS is a copy of a series of letters written in Ukrainian. These letters were encrypted by removing all the vowels and writing the consonants in a secret alphabet. Following is an example of a letter, decrypted into Ukrainian and then translated (litterally) into English. (Folio f15v):

  1. Why are you measuring the measure? The measure is the same. Even after Great One, the bones will be broken. I am telling you. Relic should believe me.
  2. Where after religion you believe in religion and wish that to Ora. Emptiness is that what Baby God's Eye is fighting for.
  3. Eye of God, you are measuring empty religion for the world. Your aim, not religion, is living in you.
  4. Eye, be careful. You should remember one holy freedom and eternal conscience.

The main reasons why Stojko's solution is finding little acceptance are:

Leo Levitov

Levitov proposed a pronouciation for the characters of the Voynich MS which leads to a largely pronounceable text, which he claims is in a creole mainly based on Flemish. His translation of this text deals with a Cathar cult of Isis followers, and rites related to Euthanasia. He published his results in a monograph . The linguistic aspect has been contested by Jacques Guy (add link) and the differences with the known practices of the Cathars in S.France have been analysed by Dennis Stallings.

The 1990's

More recent proposed solutions to the Voynich MS will be discussed later on this page, but it is important now to introduce an activity which started in the early 1990's.

Since 1991, a group of enthousiast from a variety of backgrounds have informally tackled the problem of the decipherment, throwing at it the computer resouces available nowadays. After a flurry of electronic mails via a Usenet newsgroup, the first ftp site dedicated to the MS was created by Jim Gillogly, with a mailing list which still exists, even though it has moved a few times before it settled onto its >> current home.

The main initial activities of this new group (apart from the ultimate desire to find the solution of the Voynich MS) were to obtain access to a good copy of the MS and to continue / complete the transcription of the MS. With respect to the former, on 1 June 2004 the Beinecke library has made available a nearly complete high-quality digital colour scan of the MS. It can be accessed by clicking on the Pics button on most pages at this web site.

Further transcriptions of missing pages in the Currier / D'Imperio files were made by the group, and Reeds discovered the almost complete transcriptions made by Friedman's study groups, in the George C. Marshall Library and Archives in Lexington, Virginia. These were entered in computer form by J.Reeds and J.Guy.

In 1995, the herbal expert in medieval herbals Sergio Toresella inspected the MS at the Beinecke library and wrote, in an article concerned with 'alchemical herbals' of the middle ages, that the Voynich MS appears to be written in a script fitting with the Italian humanist book movement, and should therefore be dated around 1460, and not much later. He also suggests that the purpose of the book was to impress the gullible clientele of a doctor or quack.

Individual members of the Voynich MS mailing list have performed a multitude of analyses of the MS. These will eventually be included at this site, with the proper attributions. A start is made at the analysis section. In the mean time, it is possible to retrieve the archives of the mailing list in compressed form from the >> mailing list home page (go to bottom).

Gordon Rugg

A more recent solution to the Voynich MS was developed by Gordon Rugg in 2003. Based on statistical analyses done in the late 90's and early years of the 21st century by the Brazilian Jorge Stolfi, the English scientist has proposed that the Voynich MS text could well have been generated more or less randomly by techniques which would have been available in the 16th Century, and points in particular to Edward Kelly as the perpetrator of the implied hoax (Cryptologia, Jan. 2004 and Scientific American, Summer 2004).

The proposed method consists in the use of a Cardan grille and a set of sheets with word fragments or syllables. The major shortcoming is that the method so far fails to reconstruct a number of typical features of the text of the MS, some of which are:

Other shortcomings are:

In summary, the claim that the method generates a text similar to that of the Voynich MS is not supported by any evidence and this theory can not (yet) be accepted.

Ursula Papke and Dirk Weydemann

The most recent proposed solution to the Voynich MS dates from 2005. It may be found on the >> Web Pages of Ursula Papke. This solution proposes a rather mystical meaning behind the Voynich MS, but the method for translation is not explained. The reader of that web site is proposed to buy a CD with the explanation for Eur 29,- and is furthermore presented with the option to attend an expensive seminar that will help understand the Voynich MS (presumably among other things). A sample translation from that web site is presented below. It is the translation of only the very first line of folio 1 recto of the manuscript:

f1r;1: rise over 2 levels, start, basic level, perfection, two, / perfection, simple rise, start, human being, / start, rise from first level, / perfection, rise through the gate of heart, start, rise over three levels, / rise from base level, goal, human being, / level above basic level, goal, rise from first level, perfection, / rise through basic level through the gate of heart, rise from first level, root, rise of root, / perfection,/ simple rise, goal, rise of root, / rise from base level, goal, human being, transformation, perfection

Whether anybody wants to spend money on this must of course be his or her own decision. For me, there is not a single piece of evidence that shows me that here lies the solution to the Voynich MS.

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Copyright René Zandbergen, 2005
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Latest update: 2005/05/31