CONTENTS V 



Bacillus Abortus (Bang) as an Etiological Factor in Infectious Abortion in 



Swine. Edward S. Good and Wallace V. Smith 415 



The Relation of Protozoa to Certain Groups of Soil Bacteria. T. L. Hills. . 423 

 A Study of the Boas-Oppler Bacillus. P. G. Heinemann and E. E. Ecker. . . 435 



A Contribution to the Bacteriology of Silage. J. M. Sherman 445 



Book Review. Laboratory Manual in General Microbiology. Ward Giltner 453 

 Abstracts of American Bacteriological Literature : 



Bacteriology of Food 455 



Bacteriology of the Mouth 455 



Bacteriology of Soil 456 



Bacteriology of Water and Sewage 457 



Disinfection 459 



Immunology 461 



Industrial Bacteriology. 463 



Medical Bacteriology 464 



Number 5, September, 1916 



The Bacteriology of the Bubble Fountain. Dorothy F. Pettibone, Franklin 

 P. Bogart and Paul F. Clark 471 



The Advantages of a Carbohydrate Medium in the Routine Bacterial Exam- 

 ination of Milk. James M. Sherman 481 



On a Species of Treponema Found in Rabbits. Hans Zinsser and J. G. 



Hopkins 489 



Studies on Spore-Bearing Non-Pathogenic Bacteria. Part II. W. W. Ford 



and others 493 



Spore-Bearing Baateria in Dust. C. A. Laubach 493 



Spore-Bearing Bacteria in Water. C. A. Laubach 505 



Spore-Bearing Bacteria in Soil. C. A. Laubach and J. L. Rice 513 



Miscellaneous Cultures. W. W. Ford 518 



Classification. W. W. Ford 527 



A Rapid and Simple Indol Test. Paul R. Cannon 535 



Bacterial Nutrition, a Brief Note on the Production of Erepsin by Bacteria. 

 Nathan Berman and Leo F. Rettger 537 



A Practical Method for the Identification of Guinea-Pigs under Treatment. 

 A. Parker Hitchens 541 



A Note on the Preparation of Agar Agar Culture Media. C. L. Williams and 

 H. P. Letton 547 



Book Reviews. McFarland's Pathogenic Bacteria and Protozoa; D. Green- 

 burg. Mallory's Principles of Pathologic Histology; F. P. Gay 549 



Abstracts of American Bacteriological Literature: 



Animal Pathology 553 



Bacteriology of Soils 553 



Bacteriology of the Mouth 563 



Bacteriology of Water and Sewage 564 



Classification of Bacteria 565 



Dairy Bacteriology 566 



Disinfection 567 



