1142 Journal of Applied Microscopy 



follows : Acute bronchitis is an infective disease but not due to any specific 

 organism. Various bacteria are found in the secretions, some of which are the 

 exciting causes of the disease. The disease is more often due to a mixed infec- 

 tion than to the action of bacteria. The most important causal bacteria are the 

 Diptococcus pneumonce and streptococci. The author also believes that the 

 influenza bacillus is not, infectionally, the cause of bronchitis, independent of 

 the ordinary form of influenza. H. w. c. 



Moore. Veranus A., B. S., M. D. Professor of This excellent manual, originally pub- 

 Comparative Pathology and Bacteriology, Hshed in 1898 (reviewed in the JOUR- 

 New York State Veterinary .College, and of ,^ , , i.^ i^ -.-on i 

 Bacteriology, Cornell University Medical NAL, Vol. 1, No. 9, page 1/2), has 

 College, Ithaca, N. Y. An Introduction to already gone into a second edition, 

 Practical Bacteriology for Students and , ,, ,, , , , ^, 

 Practitioners of Comparative and Human ''^"^ the author has taken the oppor- 

 Medicine. Second edition, enlarged and tunity to revise the exercises and 

 revised. Boston, U. vS. A., Ginn & Co., Pub- . i , i n 

 lishers. The Athena:um Press, igoo. ^o add several more, as well as 



an appendix, the book being now 

 twice the former size. The new chapters are on the morphology of the 

 coccus forms, bacilli and spirilla, a study of Pseudovionas pyocyafieiis, of 

 Bacillus teta/ii, and of the bacteria of the healthy mouth. The appendix con- 

 tains a reprint of the method of determining the reaction of the culture media 

 recommended by the committee of the American Public Health Association in 

 1897, together with brief directions for inoculation experiments on animals. All 

 of the exercises are exceedingly practical and practicable, the directions are 

 concise while being sufficiently explicit, and references to standard literature 

 lead the student to extend his knowledge by consulting the authorities in the 

 science. The selection of exercises amply justifies the title of the book. 

 University of Rochester. Charles WriGHT Dodge. 



Hall, H. 0. The Etiology of Scarlet Fever. The feature of this paper consists in a 



New York Medical Record, 56: 607, i8gq. , ^ ,, 1 • 1 i- -i ^• 



^ ^ Study of the geographical distribution 



of scarlet fever and its relation to the use of milk as a food. The author finds 



that the disease occurs in all countries where cow's milk is an important article 



of diet, especially for children. It is lacking, however, in those countries where 



cow's milk is not used. In China and Japan, where cow's milk is not 



used as food, the disease is unknown. In India, where cow's milk is 



used for adults but not for children, the disease is extremely rare. In 



countries where asses' milk or goat's milk is used, scarlet fever is unknown. 



The author is of the opinion that this is a disease primarily distributed by milk. 



H. w. c. 



Courmant. ^'agglutination der bacille de Koch The author has .Studied the problem of 

 des epauchements tuberculeux. Arch.de the agglutination of the tubercle bacillus 

 Med. Kxp. 12: 697, 1900. °° 



by the various exudations from tuber- 

 culous animals. He finds that the exudations of tuberculous animals always 

 produce an agglutination of the bacillus, but that the amount of agglutination is 

 not proportioned to the extent of the disease. Advanced cases of the disease 

 produce little agglutination, while incipient cases produce a very marked effect. 

 The author believes that the phenomenon may be of a decided diagnostic value. 



