ALFRED H. WELSH, A.M.

LATE PROFESSOR OF MATHEMATICS IN BUCHTEL COLLEGE, AUTHOR OF
DEVELOPMENT OF ENGLISH LITERATURE

AND LANGUAGE

If a man's wit be wandering, let him study the mathematiks; for in demonstra-
tions if his thought be called ever so little away, he must begin again.-Lord Bacon

CHICAGO

S. C. GRIGGS AND COMPANY

COLLEGE

ΤΟ

MY FRIEND AND BENEFACTOR,

GOVERNOR CHARLES FOSTER.

NIHIL EST TAM POPULARE QUAM BONITAS.-Cicero.