SCIENCE 



r ™o. X3.S Fkiday, October 29, 1^. =|p TZ'TZ^J^Z] «6.oo 



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JUST READY % ^ 

 Smith's Bacterial Diseases of Plants "^ 



This book is the result of thirty-iive years of reading art- ^ t laboratory and 



field investigation. More than most books it is the pro -5 experiment. It 



is largely the product of a single laboratory, eight of the f^ ^^ organisms here 

 selected for special study having been named by the authov. It is, in a sense, a 

 review of Professor Smith' s work in this field. 



That elaborate apparatus is not necessary for experimental work in plant bacteriology 

 is well illustrated in the simplicity of the apparatus Professor Smith uses in his own 

 research. 



By Erwin F. Smith, in charge of Laboratory of Plant Pathology, Bureau of Plant Industry, Washington, 

 D. C. Octavo of 600 pages, illustrated. 



Prentiss and Arey's Embryology lauL 



This edition has been given a thorough and careful revision, adding every new ad- 

 vancement. It deals particularly with the chick and pig embryos usually studied 

 in the laboratory, comparing them constantly with the human embryo and giving 

 you a concise systematic account of human embryology. A large number of origi- 

 nal dissections are described and illustrated. 



Large octavo of 411 pages, with 388 illustrations. By Charles W. Pkentiss, Ph.D., formerly Professor of 

 Microscopic Anatomy, and Leslie B. Aeey, Ph.D., Associate Professor of Anatomy, Northwestern Univer- 

 sity. Cloth, $5.50 net. 



Mallory and Wright's Pathologic Technic fZt' 



This work gives the technic of bacteriologic methods, bacteriology of various dis- 

 eases, histologic methods, the special methods used in clinical bacteriology and 

 pathology, and the preparation of bacterial vaccines. 



Octavo of 555 pages, with 181 illustrations. By Frank Burr Mallory, M.D., Pathologist to the Boston 

 City Hospital: and James Homer Wright, M.D., Pathologist to the Massachusetts General Hospital. 



Cloth, S4.50 net. 



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W. B. SAUNDERS COMPANY,West Washington Sq.,PhiIa. 



f Smith 'b Bacterial Diseases of Plants Ready soon 1 



Please send me \ Prentiss and Arey's EmbryoiocT - - - $5.50 net |- and charge to my account 



(. Mallory and Wright's Pathologic Technic $4.50 net J 



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