Turing’s Treatise on Enigma
...which are 26 contacts C1,J...,C26.
... and one between the M.W. and the L.H.W.
, but in this/q.
- Page 5, SectionThe Steckered Enigma: The encipherment without any Stecker should be:
- Page 7, last line: Should read,... notice that the same effect as a moveable tyre
- Page 9, last paragraph, second to last sentence: Inserted of letters after... the same arrangementsuch that it reads,... the same arrangement of letters on either side of it.
...which are 26 contacts C1,J...,C26., has been shown to be an ink blotch or copying speck.
Connection through the wheels, first paragraph, third line:
... which are connected together in pairs, there ...Comma relaced with full stop and a new sentence starts with There are three or more .... End of this same sentence
... on the left (left and right with position when in .... Position changed to positions.
... turns over between Q and R,the following text has been inserted: i.e. if I is in the R.H. position then the M.W. will move forward whenever the window position of the R.H.W. changes from Q to R.
The Steckered Enigma, first paragraph, eleventh line: After
... with Stecker A/V, N/O. and perhaps ...the full stop changed to comma.
[unreadable heading], first paragraph, first line: The square brackets around part of the text have been removed as this text has now been verified to be correct.
... consideration the relative positions of the clip .... The following text has been inserted between
of the clip: of the contact C26 of the E.W. and the windows, and also the positions.
The comic strips, first paragraph, sixth line:
... the left represents the plate contacts.Represents changed to represent.
... the path of the current is ?? ... ?? in the column .... Ended the sentence after last question marks and started a new sentence beginning with In the column. The full sentence will then be:
... wheel in steps.Steps changed to step.
... the window position on ...Position changed to positions.
The rod square and inverse rod square, first paragraph, first line:
... effect of a wheel in the position.The word
thechanged to any.
The rod square and inverse rod square, first paragraph, third line:
... numbers 1,...,26 and the ...Added comma after 26.
The rod square and inverse rod square, first paragraph, sixth line:
... the rod position for the wheel.The word
forchanged to of.
The rod square and inverse rod square, first paragraph, seventh line: Fig. 16 changed to Fig.15 and a footnote with an explanation has been added.
The rod square and inverse rod square, second paragraph, fourth line: Footnote inserted after Fig. 17 to explain that this figure is missing.
Encoding and decoding on the rods: The square brackets and the question marks in the heading have been removed as this text has now been verified to be correct.
orod, column 15 the letter X changed to K.
erod, column 16 inserted the letter P.
grod, column 13 the letter R changed to B.
rrod, in the columns 11 to 15 the letters O X A D C changed to X T K L Y. In column 16 inserted the letter L.
srod, column 16 the letter K changed to E.
lrod, column 13 the letter R changed to B.
N Din the last two columns (19 and 20) has been removed as it does not appear in the Treatise. The layout of the caption has been changed to make the references clearer.
... in guage with ...
guagechanged to gauge.
... the Ringstellung to be 26, 17, 16, 13, and ...has been changed to .. the Ringstellung to be 26 17 16 13, and ...
... to be 10 5 26 1 and the deciphering then begun.the following text has been inserted in front of the word
... terms of rod position.the word
positionschanged to position.
[ 15 ]inserted immediately after Fig. 16.
... recording to the pairs ...the word recording changed to according.
... through the U.K.W, L.H.W. and ...added a full stop after the W in U.K.W.
... amd L.H.W. in .... The word
amdchanged to and.
The pair of letters ...The word
pairchanged to pairs.
... have the position 10, 14, 10 and ...now reads:
... set-up for decoding with the ...the following text has been inserted in front of the word
... chapters to individual messages.inserted the in front of the word
... German Naval Enigma cipher which is dealt ...inserted comma after the word
... positions as where the click ...removed the word as.
A mechanical method. The Bombe., figure after the first paragraph: The plain text letter F in column 20 changed to P.
5)in the text
... hypothesis numbered 5) above.
... would be 6 hypotheses ...changed to .. would be 2 hypotheses ... and an editors’ footnote added with explanations.
... crib is put in the form of a pictureinserted the word to between the words
... Fig. 59, P-B-U-0 and R-H...the last letter of
P-B-U-0changed to capital O.
... to these kinds of scanning, ...inserted the in front of the word
Pye simultaneous scanning, first paragraph, second line: Inserted comma after the ellipses in the text
... A',...Z'.such that it reads: A',...,Z'.
... to make this idea fit better.added even in front of the word
Fig. 61has been removed. This label is not in the original and it does not fit the description of Fig. 61.
... to look as much like a ...replaced
The Spider. A Second Description. Actual Form, first paragraph, last line: In the text
... we will start fresh with this idea.The word
freshchanged to afresh.
Relevant parts of alpahbetsan editors’ footnote has been added to the bigram QI in column 24 to explain that this bigram should be TV.