Brew'

OF C

NORMAL

UNION ARITHMETIC,

DESIGNED FOR

COMMON SCHOOLS, NORMAL SCHOOLS, HIGH SCHOOLS, ACADEMIES, ETC.

BY

EDWARD BROOKS, A. M., PH. D.,

SUPERINTENDENT OF PUBLIC SCHOOLS OF PHILADELPHIA,

ALGEBRA,

77 66 NOR

FORMER PRINCIPAL OF STATE NORMAL SCHOOL, PENNSYLVANIA, AND AUTHOR
OF "THE NORMAL SERIES OF ARITHMETICS," "NORMAL ELEMENTARY
""NORMAL GEOMETRY AND TRIGONOMETRY,"
MAL METHODS OF TEACHING,' "MENTAL SCIENCE AND
CULTURE, ""PHILOSOPHY OF ARITHMETIO," ETO.

"Analysis and Synthesis;-the magic wand whose touch unfolds the mys terious and beautiful relations of numbers."

PHILADELPHIA:

CHRISTOPHER SOWER CO.,

614 ARCH STREET.