Page 157, #26 (5/1): "a_{1}c-natural_{0}" corrected to
"a_{1}c-prime_{0}".
Page 157, #26 (>2): "e_{1}c-natural_{0}" corrected to
"e_{1}c-prime_{0}".
Page 157, #29 (8/2): first underline corrected from single to double.
Page 161, #36 (4/2): "e'd-prime" corrected to "e'd-natural".
Page 161, #39 (1/2): "c-prime+d" corrected to "c-natural+d".
Page 161, #40: "a" and "b" interchanged.
Page 161, #43 (1/1): "b-natural_{1}e_{0}" corrected to
"b-prime_{1}e_{0}".
Page 162, #52 (3/1): "h'k-prime_{0}" corrected to "h'k-natural_{0}".
Page 163, #55 (3/2): "c'd-prime" corrected to "c'd-natural".
Page 163, #57 (1/2): "h-natural+d'" corrected to "h-prime+d'".

In the original book at the top of page 97, the following text occurred:

[N.B. The numbers at the foot of each page indicate the pages
where the corresponding matter may be found.]

In accordance with the un-paged medium here this has been changed to:

[N.B. Reference tags for Examples, Answers & Solutions will be
found in the right margin.]

The part of the book to which this relates contains, by sections,
"Examples" (Exercises for the student), "Answers" (to the Examples) &
"Solutions" (Worked Answers). All Example sections have corresponding
Answer sections. For Sections 2 & 3, worked Solutions are not supplied;
for Sections 4-7, Solutions are given by 2 different methods. In
association with this, the original text contained editorial notes at
the foot of each page giving the page numbers for the related Sections.
In this version, these notes are replaced with marginal tags such as
EX3, AN4, SL5, & SL6-A and SL7-B which are placed at the top of each
Section to identify the current location. As with page tags, these may
be searched for to locate the material refered to. (A search for "SL4"
should find successively both "SL4-A" & "SL4-B".) These tags are unique
regardless of case.

End of the Project Gutenberg EBook of Symbolic Logic, by Lewis Carroll

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