The Newmanry History
Part of The General Report on Tunny (1945)
Codes and Ciphers
A complete copy of the original document is held in the Public Record Office, UK.
However, this section has been tackled first because of the enormous interest in the Colossus and the need to fully understand and debate the wartime use of Colossus to enable the completion of the Colossus Rebuild Project under the direction of Tony Sale.
This document has been formatted for HTML and PDF by Tony Sale © March 2001.
Note: These pages should be read only as a convenient web-based overview of the document and not as a definitive edition. As you will be able to see from those portions of the document left as GIF scans, the report was typed on a non-mathematical typewriter, with handwritten symbols and diagrams added. It is logically impossible to render the content faithfully on the screen.
A technique has been developed using scanning, image inversion, Optical Character Reading, and translation into HTML format, which attempts to display each page as closely to the original as possible, respecting the use of spaces and punctuation by the authors. However because different browsers interpret HTML code differently, this cannot be achieved with real consistency. In the case of the PDF version, retention of the original page numbering meant that the width of the page had to be somewhat increased, since many of the original pages contained more than 70 lines of text. For the HTML version, you will find also that you need to set your browser window to a wide setting.
The representation of the mathematical and technical symbols is also only offered in a preliminary version. An additional difficulty with HTML is that not all browsers support the Greek alphabet. As a temporary solution, a text representation has been adopted, with for instance the word Delta representing a Greek capital delta. The results are not entirely satisfactory and it is intended to go on to a second stage of editing in which subscripts, superscripts and Greek letters are more properly represented.
The OCR technique has required an enormous amount of editing to clear up mis-read characters. I am indebted to Frode Weierud and many others for help in proof-reading. Reporting of any remaining "garbles" would be greatly appreciated.
For all the above reasons, anyone conducting research into this material should obtain their own copy of the original document, and not rely on this webpage version for quotation or citation.
However, despite all these deficiencies, it has seemed important and worthwhile to place an 'overview' version of this crucial historical document on the Web, while we wait for the definitive publication of the full Report.
Chi-breaking and Cribs
Development of Robinson and Colossus
Early Hand Methods
Hand Statistical Methods
Machines, General Introduction
Major Tester's Section
Mr. Newman's Section
Registration and Circulation
Specialised Counting Machines
Tape-making and Checking
Testery Methods 1942-44
The First Break
Wheel-breaking (from Key)
Back to the index page for Tony Sale's Codes and Ciphers in the Second World War.
|This page is created by Tony Sale
(firstname.lastname@example.org) the original curator of the Bletchley Park Museum, and Secretary of the Bletchley Park Heritage Society.
|Technical assistance from Andrew Hodges|