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SCIENCE 
Naw SERIne <\ Biwexe Cortes, 15 Ore. 
Vou. XLVIII No. 1248 <>) ANNUAL SUBSCRIPTION, $5.00 
Fripay, NoveMBER 29, 1918 
Whetzel’s 
History of Phytopathology 
In this new book Prof. Whetzel sets forth in rather comprehensive outline 
the outstanding features in the evolution of the science of plant pathology. 
He divides his subject into five Eras—The Ancient Era (from earliest times 
to the end of 5th century); The Dark Era (6th to 16th centuries inclusive) ; 
The Premodern Era (1600 to about 1850); The Modern Era (1853 to about 
1906); The ‘Present Era (1906—). These Eras he {in turn divides into 
Periods. He gives a general survey of each Era and each Period, crysta- 
lizes the evolutionary movement of each; gives interesting biographic 
sketches of the predominant figures, frequently including portraits, and at 
the end of each Period adds a concise summary. Bibliographic references 
are numerous. Indeed the literature is here largely brought together for 
the first time. 
12mo of 130 pages, with portraits. By Hersert Hick Wuerzet, Professor of Plant Pathology, Cornell 
University, Ithaca, New York. 
Fred’s Soil Bacteriology 
Laboratory Manual of Soil Bacteriology. 
By E. B. Frep, Ph.D., Associate Professor 
of Agricultural Bacteriology, College of 
Agriculture, University of Wisconsin. 12mo 
of 170 pages, illustrated. Cloth, $1.25 net. 
Valuable to students of soil bacteriology, 
chemistry, physics, plant pathology. 
Kaupp’s Poultry Culture 
Poultry Culture, Sanitation, Hygiene. By 
B. F. Kaurr, M.S., D.V.M., Poultry In- 
vestigator and Pathologist, North Carolina 
xperiment Station. 12mo, 418 pages, 197 
illustrations. Cloth, $2.00 net. 
Every side from names and breeds, lo care 
and marketing. 
Cloth, $1.75 net. 
Dietrich’s Live Stock 
Livestock on the Farm. By Witi1am Drer- 
RIcH, Ph.D., Head of the Department of 
Animal and Dairy Husbandry, University 
of Minnesota, Crookston Branch. 12mo 
of 269 pages, illustrated. Cloth, $1.50 net. 
A clear presentation of economic livestock 
raising. 
Kaupp’s Anatomy of the Fow] 
The Anatomy of the Domestic Fowl. By B. 
F. Kaupp, M.S., D.V.M., Poultry Investi- 
gator and Pathologist, North Carolina Ex- 
riment Station. 12mo of 373 pages, 
illustrated. Cloth, $3.00 net. 
The first complete textbook on this subject. 
Particularly full on embryology. 
W. B. SAUNDERS COMPANY Philadelphia and London 
