HENRY A. MOTT, Jr., E.M., Ph.D., Etc.,

Member of the American Chemical Society, Member of the Berlin Chemical Society, Member of the New York Academy of Sciences, Member of the American Association for the Advancement of Science, Member of the American Pharmaceutical Association, Fellow of the Geographical Society, Etc., Etc.

Author of the "Chemists' Manual," "Adulteration of Milk," "Artificial Butter," "Testing the Value of Rifles by Firing under Water," Etc., Etc.

NEW YORK: GRISWOLD & COMPANY, 150 Nassau Street. 1880.

Copyright by HENRY A. MOTT, Jr., 1880.

Trow's Printing and Bookbinding Co., 205-213 East 12th St., NEW YORK.

Electrotyped by Smith & McDougal, 82 Beekman Street, N. Y.