ZOOLOGY AND BOTANY, MICEOSCOPY, ETC. 853 



Cornil and Babes' " Bacteria."* — With the object of presenting all 

 the researches upon the bacteria in their proper light, the authors have 

 produced a profusely illustrated book, containing all that is known in 

 regard to Bacteria at the present time. The work begins with an 

 introduction to the study of the pathogenic Bacteria, and a rapid 

 summary of the beginning and progress of discovery in this direction 

 is given. This is of special value to the student because of the 

 copious references to original monographs that are made. The 

 development of the Microscope for work of this kind, the discussions 

 as to the specific nature of infectious disease, and the criticisms which 

 bacteriology has undergone, are reviewed, and this is followed by the 

 first part of the book proper. This is devoted to a consideration of 

 the Schizomycetes in general. The various forms of the organisms 

 are given and illustrated, and their methods of growth are treated at 

 length. A full account of all the instruments and materials necessary 

 for work in the observation of Bacteria, with the methods of employ- 

 ment, renders this part of the subject plain, while the discussion of 

 the anilin colours conveys information not easy for the student to 

 obtain elsewhere. The methods of culture are given in full. 



. The classifications of Cohn, Van Tieghem, and Eabenhorst are 

 spoken of as the latest and best ; and a complete list of all the patho- 

 genic Bacteria, with their main characteristics, follows. The bone of 

 contention, " the attenuation of virus," finds a place, and the various 

 organisms with which experiments approaching success have been 

 made are allowed to tell their story. Then the lesions occurring 

 with the presence of pathogenic Bacteria occupy the authors' attention ; 

 and the modes of entrance, and disturbances of circulation and nutri- 

 tion produced by them, are all placed before the reader in the plainest 

 way. A discussion of the " experimental maladies " of Koch and others 

 closes the first part of the work, which is followed by a complete 

 bibliography of the important works upon Bacteria in general. 



The second portion of the book is devoted to the special infectious 

 diseases. Beginning with chicken-cholera and ending with leprosy, 

 the results of all the investigations upon any disease suspected to bo 

 due to a micro-organism are dealt with in the most impartial 

 manner. This includes not only the diseases of man, but also those 

 of animals concerning which any evidence of their bacterial origin 

 has been oficred.| 



* Cornil, A. V., anrl Babes, V., " Les Bacteriea et leur role dans I'anatomie, 

 et riiistologio patholof^ique dca muladiea iofectieuses,' viii, and 096 pp., 27 pis. 

 and figs., 8vo, Paris, 1885. 



t Cf. Science, vi. (1885) pp. 77-8. 



Bcr. 2.— Vol. V. 3 K 



