Symbolic Logic · Lewis Carroll — chapter 9 of 49 · ~24 words · public domain
INTERPRETATION, IN TERMS OF x AND y, OF TRILITERAL DIAGRAM, WHEN MARKED WITH COUNTERS OR DIGITS.
Rules 53
Examples worked 54
=BOOK V.=
=SYLLOGISMS.=
Symbolic Logic · The Wunder Library — complete classics, free to read, with narration.