ALL THE MATTER USUALLY PRESENTED IN A HIGHER ARITHMETIC,
ANALYZED AND PRACTICALLY APPLIED; WITH THE MOST
APPROVED MODELS AND ANALYSES.

FOR

Public Schools and Academies,

BY

PHILOTUS DEAN, A. M.

LATE PRINCIPAL AND PROFESSOR OF NATURAL SCIENCES IN THE PITTSBURGH CENTRAL
HIGH SCHOOL, AND DIRECTOR OF THE ALLEGHENY OBSERVATORY.

EDITED BY J. P. CAMERON.

PITTSBURGH:

PUBLISHED BY A. H. ENGLISH & CO.