eriology of
plants, milk and milk-products, air, agriculture, water,
food preservatives, the processes of leather tanning,
tobacco curing, and vinegar making; the relation of
bacteriology to household administration and to sanitary
engineering, etc.

~Prof. Severance Burrage~, _Associate Professor of Sanitary Science,
Purdue University._

"I am much impressed with the completeness and accuracy of
the book. It certainly covers the ground more completely
than any other American book that I have seen."

* * * * *

Buchanan's Veterinary Bacteriology

~Veterinary Bacteriology.~ By ROBERT E. BUCHANAN, PH.D., Professor of
Bacteriology in the Iowa State College of Agriculture and Mechanic Arts.
Octavo, 516 pages, 214 illustrations. Cloth, $3.00 net.

~THE BEST PUBLISHED~

Professor Buchanan discusses thoroughly all bacteria causing
diseases of the domestic animals. He goes minutely into the
consideration of immunity, opsonic index, reproduction,
sterilization, antiseptics, biochemic tests, culture-media,
isolation of cultures, the manufacture of the various
toxins, antitoxins, tuberculins, and vaccines that have
proved of diagnostic or therapeutic value. Then, in addition
to bacteria and protozoa proper, he considers molds,
mildews, smuts, rusts, toadstools, puff-balls, and the other
fungi pathogenic for animals.

~B. F. Kaupp, D. V. S.~, _State Agricultural College, Fort Collins._

"It is the best in print on the subject. What pleases me
most is that it contains all the late results of research.
It fills a long felt want."

Heisler's Embryology

~A Text-Book of Embryology.~ By JOHN C. HEISLER, M.D., Professor of
Anatomy in the Medico-Chirurgical College, Philadelphia. Octavo volume
of 435 pages, with 212 illustrations, 32 of them in colors. Cloth, $3.00
net.

~THIRD EDITION--WITH 212 ILLUSTRATIONS, 32 IN COLORS~

This edition represents all the advances recently made in the science of
embryology. Many portions have been entirely rewritten, and a great deal
of new and important matter added. A number of new illustrations have
also been introduced and these will prove very valuable. Heisler's
Embryology has become a standard work.

~G. Carl Huber, M.D.~, _Professor of Embryology at the Wistar Institute,
University of Pennsylania._

"I find this edition of 'A Text-Boo