_mCIENCE 
NEw SERIES a SINGLE COPIES, 15 CTs. 
VoL. XXXV. No. 893 FRIDAY, FEBRUARY 9, 1912 ANNUAL SUBSCRIPTION, $5.00 
BOOKS OF GREAT MERIT 
MICROBIOLGY 
By Various Writers 
EDITED By CHARLES E. MARSHALL 
MICHIGAN AGRICULTURAL COLLEGE 
128 Illustrations. 12mo, xxi+724 pages. Flexible Cloth, $2.50. 
“The editor appears to have been very fortunate in his choice of collaborators, for each subject 
is most ably discussed in the light of the newest knowledge.’’—New York Medical Journal. 
Outlines of Applied Optics 
A Book dealing with Optical Instruments and Optical Measurements from the Standpoint of 
Sensibility and Precision. 
By Dr. P. G. NUTTING 
U. 8. BUREAU OF STANDARDS, WASHINGTON, D. CG. 
Contains 73 illustrations drawn especially forthe purpose. Octavo. ix+234 pages. Cloth, $2.00. 
ENTOMOLOGY with Special Reference to Its Biological and Economical Aspects. By 
Justus WATSON Foxsom, Sc.D. (Harvard). Assistant Professor of Entomology at the Uni- 
versity of Illinois. 5 plates (1 in colors) and 300 other illustrations. 8vo, 485 pages. Cloth, $2. 
EMBRYOLOGY. A Laboratory Textbook of Embryology. By CHARLES S. Minot, S.D. 
LL.D., Professor of Comparative Anatomy, Harvard University Medical School. Second Edi- 
tion. Revised. With 262 Illus. xii+402 pages. Cloth, $3.50. 
MAMMALIAN ANATOIIY. With Special Reference to the Anatomy of the Cat. By 
ALVIN Davison, A.M., Ph.D., Professor of Biology, Lafayette College, Easton, Pennsylvania. 
Second Edition. Revised. 114 Illustrations. Cloth, $1.50. 
“*Furnishes an excellent idea of the structure of the cat, free from superfluity of detail.’?— 
Science. 
Foods and Their Adulteration 
Origin, Manufacture and Composition of Food Products: Infants’ and Invalids’ Foods: Detec- 
tion of Common Adulterations, and Food Standards. 
By HARVEY W. WILEY, M.D., Pu.D. 
CHIEF CHEMIST U.S. DEPARTMENT OF AGRICULTURE 
Second Edition. Revised and Enlarged by over 100 Pages of New Material. 11 Colored Plates 
and 87 other Illustrations. Octavo. xii+641 pages. Cloth, $4.00. 
P. BLAKISTON’S SON & CO., Publishers 
1012 WALNUT STREET PHILADELPHIA 
