The Questions and Answers should be like this:—
Q. Represent “No x′ are y′.”
A. Grey Counter in S.E. Cell.
Q. Interpret Red Counter on E. partition.
A. “Some y′ exist.”
Q. Represent “All y′ are x.”
A. Red in N.E. Cell; Grey in S.E.
Q. Interpret Grey Counter in S.W. Cell.
A. “No x′y exist” = “No x′ are y” = “No y are x′”.
&c., &c.
At first the Examinee will need to have the Board and Counters before him; but he will soon learn to dispense with these, and to answer with his eyes shut or gazing into vacancy.
[Work Examples § 1, 5–8 ([p. 97]).]
[pg039]BOOK IV.
THE TRILITERAL DIAGRAM.
