NOW READY.
THE ELEMENTS OF CHEMISTRY. By Professor F. W. Clarke, Chemist of the United States Geological Survey. 12mo. Cloth, $1.50.
THE ESSENTIALS OF ANATOMY, PHYSIOLOGY, AND HYGIENE. By Roger S. Tracy, M.D., Health Inspector of the New York Board of Health; author of "Hand-Book of Sanitary Information for House-holders," etc. 12mo. Cloth, $1.25.
A COMPEND OF GEOLOGY. By Joseph Le Conte, Professor of Geology and Natural History in the University of California; author of "Elements of Geology," etc.
ELEMENTS OF ZOOLOGY. By C. F. Holder, Fellow of the New York Academy of Science. Corresponding Member Linnæan Society, etc.; and J. B. Holder, M. D., Curator of Zoölogy of American Museum of Natural History, Central Park, New York.
DESCRIPTIVE BOTANY. A Practical Guide to the Classification of Plants with a Popular Flora. By Eliza A. Youmans, author of "The First Book of Botany," editor of "Henslow's Botanical Charts." 12mo. Cloth, $1.50.