BY GEO. M. HOPKINS.

SEVENTEENTH EDITION, REVISED AND ENLARGED. 840 PAGES. 800

ILLUSTRATIONS. ELEGANTLY BOUND IN CLOTH. PRICE, BY MAIL, POSTPAID,

$4.00; HALF MOROCCO, $5.00.

This is a book full of interest and value for teachers, students and

others who desire to impart or obtain a practical knowledge of

Physics.

This splendid work gives young and old something worthy of thought. It

has influenced thousands of men in the choice of a career. It will

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for hours of instructive recreation.

Scientific American Supplement, No. 1157, March 5, 1898 · 第 57 / 73 题