Reference Works for the Laboratory 

 Bergey's Manual of Determinative Bacteriology 



The Third Edition (January 1930) is completely revised 

 and very considerably enlarged, ioo additional organisms 

 are recognized; also two additional tribes and four additional 

 genera. Keys have been reconstructed in several instances. 

 The work has been done by David H. Bergey and his asso- 

 ciates. There is, as in former editions, an index by Robert 

 S. Breed. $6.00. 



General Systematic Bacteriology 



By R. E. Buchanan. It presents in graphic form the 

 phylogeny and relationships of various groups. It also gives 

 an historical review of classifications of genera. Of the 

 highest use in the stabilization and unification of nomencla- 

 ture. $6.00. 



Standard Methods 



By Augustus B. Wadsworth. Presents the methods of the 

 Division of Laboratories and Research of the New York 

 State Department of Health. Deals with laboratory pro- 

 cedures, methods and technique of all sorts. Very compre- 

 hensive, it is a laboratory tool of practical every day utility. 

 $7.50. 



Dictionary of Bacteriological Equivalents 



By William Partridge. French-English; German-English; 

 Italian-English; Spanish-English equivalents of diseases of 

 man, animals and plants, chemical substances and opera- 

 tions. $4.00. 



The Williams & Wilkins Company 



Publishers of Scientific Books and Periodicals 

 BALTIMORE, U. S. A. 



