APPLETONS’ 
SCIENCE TEXT-BOOKS. 
D. AppLeton & Co. have the pleasure of announcing that in response to the 
growing interest in the study of the Natural Sciences, and a demand for improved 
text-books representing the more accurate phases of scientific knowledge, and 
the present active and widening field of investigation, they have made arrange- 
ments for the publication of a series of text-books to cover the whole field of 
science-study in High Schools, Academies, and all schools of stmilar grade. 
No abridgment of labor or expense has been permitted in the effort to make 
this series worthy to stand at the head of all educational publications of this kind. 
Although the various books bave been projected with a view to a comprehensive 
and harmonious series, each volume will be wholly independent of the others, 
and complete in itself. 
NOW READY. 
THE ELEMENTS OF CHEMISTRY. By Professor F. W. CLARKE, 
Chemist of the United States Geological Survey. 12mo. Cloth, $1.40. 
THE ESSENTIALS OF ANATOMY, PHYSIOLOGY, AND HY-. 
GIENE. By Roger 8. 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, $1.20. 
A COMPEND OF GEOLOGY. By Joszrra Lz Contes, Professor of Geol- 
ogy and Natura] History in the University of California; author of ‘Ele- 
ments of Geology,” etc. Cloth, $1.40. 
ELEMENTS OF ZOOLOGY. By C. F. Houprr, Fellow of the Néw York 
Academy of Science, Corresponding Member Linnean Society, etc. ; and J. 
B. Horprr, M.D., Curator of Zodlogy of American Museum of ‘Natural 
- History, Central Park, New York. Cloth, $l. 40.” 
DESCRIPTIVE BOTANY. A Practical Guide to the Classification of Plants, 
with a Popular Flora. By Euiza A, Youmans, author of “‘ The Firet Book 
of Botany,” editor of ‘* Henslow’s Botanical Charts.” 12mo. Cloth, $1.40. 
APPLIED GEOLOGY. A Treatise on the Industrial Relations of Geological 
Structure; and on the Nature, Occurrence, and Uses of Substances derived 
from Geological Sources. By SamusL G. Witt1ams, Professor of General 
and Economic Geology in Cornell University. 12mo. Cloth, $1. 40.- 
Other volumes to follow as rapidly as they can be a 
New York: D. APPLETON & CO., 1, 8, & 5 Bond Street. 
