8 MANUAL or BACTERIOLOGY. 



in Paris, contain abstracts of most of the important researches 

 made in all parts of the world. The Annates de I'Institut 

 Pasteur, the Zeitschrijt jur Hygiene, and the Archiv jiir Hygiene 

 contain many original articles on bacteriological subjects. 



The whole literature of any specified subject in bacteriology 

 can be most conveniently found in Baumgarten's Jahresbericht 

 der Mikroorganismentehre. 



Those who are interested in agricultural bacteriology should read the ex- 

 periment station records and the various bulletins issued by the Department 

 of Agriculture of the United States. They can usually be obtained upon 

 application to the Department at Washington, D. C. The bacteria that 

 produce disease in domestic animals are described in Dr. V. A. Moore's book, 

 "The Infectious Diseases of Animals," Taylor & Carpenter, Ithaca, N. Y., 

 1902, and in the "Special Report on the Diseases of Cattle," United States 

 Department of Agriculture, 1904. 



Historical Sketch. — The remarkable growth of mechanical 

 and industrial enterprises which the last half century has wit- 

 nessed is held to be characteristic of it. The world justly takes 

 pride in its achievements along these lines. Nearly all that we 

 know of bacteria and the part they play in producing disease 

 has been learned during the same period. It is but fair to say 

 that the rapid growth of this knowledge has been equally char- 

 acteristic of the age. 



Nevertheless many facts were known long ago, and even 

 by the ancients, which were effective in directing the thought 

 of later years. The epidemic nature of certain maladies was 

 naturally among the earliest of these to be noticed, and was, ' 

 even until recently, attributed to the influence of gods, demons, 

 or other supernatural agencies. The superstitions and crude 

 behefs of the past gave rise to a mass of grotesque theories and 

 fanciful speculations. But with all this we hear of certain 

 beliefs and practices which plainly foreshadowed those of the 

 present day. Latin writers nearly two thousand years ago 

 recorded a relation between insects and malaria which has but 

 lately been proved and explained. The treatment of lepers by 



