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VoL. XLVIII No. 1231 Fripay, Auaust 2, 1918 paren Paine Mactoe $5.00 
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Jordan’s General Bacteriology pees. 
In this work there are extensive chapters on methods of Seay ide bacteria, including stain- 
ing, biochemical tests, cultures, ete.; on enzymes and fermentation products; on the 
bacterial production of pigment, acid, and alkali; and on ptomains and toxins. 
Octavo of 669 pages, illustrated. By Epwin O. Jonpan, Pu.D., Professor of Bacteriology in the University 
of Chicago. Cloth, $3.25 net. - 
Fred’s Soil Bacteriolo 
The exercises described in this book are eae primarily for students of soil bacteriology, 
soil chemistry and physics, and plant pathology. As far as possible the experiments are 
planned to give quantitative results. 
12mo of 170 pages, illustrated. By E. B. Frep, Pa.D., Associate Professor of Agricultural Bacteriology, 
College of Agriculture, University of Wisconsin. Cloth, $1.25 net. 
Prentiss and Arey’s Embryology je es eorrion 
This work has been extensively revised and entirely reset. The actual descriptions have 
been reset and rearranged, a new chapter on the morphogenesis of the skeleton and 
muscles has been included. 
Large octavo of 411 pages, with 388 illustrations. By Cares W. Prentiss, Px.D., formerly Professor of 
Microscopic Anatomy, and Lesitie B. Arey, Pu.D., Associate Professor of Anatomy, Northwestern Uni- 
versity. Cloth, $4.00 net. 
Arey’s Laboratory Histology 
Professor Arey treats his subject strictly on an induction basis. He leads the student to 
scrutinize, explain, and reach conclusions for himself. 
12mo of 81 pages. By Lestie B. Arey, Pa.D., Associate Professor of Anatomy, a rca ap 
loth, $1.00 net. 
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McFarland’s Biology Deccamaeericn 
This work takes up Living Substance generally. There are chapters on the cell, reproduc- 
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12mo of 457 pages, illustrated. By JosepH McFAaRLanD, M.D., Professor of Pathology and Bacteriology, 
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Drew’s Invertebrate Zoology Se ONG 
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Daugherty’s Economic Zoology RRR AE 2 
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are emphasized. The work has been thoroughly revised. 
By L. S. Davcserty, M.S., Pa.D., Professor of Science, Missouri Wesleyan College; and M. C, Davonerrr. 
Part I—Field and Laboratory Guide. 12mo of 275 pages, interleaved. Cloth, $1.25 net. Part Il—Prin- 
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