X. 

 Bacteria, Yeasts, Fermentations. 



J. PERCIVAL. Agricultural Bacteriology. London, 1910, Duck- 

 worth & Co., pp. x-4o8. 



As to the scopes of this book, the author says in the preface 

 that, " the science of Bacteriology, which has been so much the 

 domain of the student of disease, is now being applied to the elu- 

 cidation and solution of many of the problems which confront the 

 farmer, gardener, and dairyman in their daily life. 



" The extensive development of the dairying industry has been 

 greatly assisted by the bacteriologist, and very material advances 

 may be expected in the near future in the application of the 

 science to the study of the soil and the phenomena connected with 

 the economical and efficient use of fertilisers for the nutrition of 

 farm and garden crops. 



" For some time a knowledge of bacteriology has been demanded 

 of candidates for examinations in agriculture, dairying, and horti- 

 culture, but experience has shown that few of them have had any 

 practical acquaintance with the subject, mainly, we believe, from 

 lack of suitable opportunities for proper training and absence of a 

 textbook dealing with the subject in a practical way. 



" It is to supply the needs of such students that the present text- 

 book has been written. " 



G. E. STONE. Influence of electricity on micro-organisms. - 



(Bot. Gaz., 48, 1909, No. 5, pp. 359-379* fi g s - 2 )- E - $- R -> 

 March 1910, Washington. 



The results of investigations showing the influence of electricity 

 on the growth and multiplication of micro-organisms are given. The 

 studies were carried on to determine the influence of electricity on 

 bacteria in water, milk, and soils, as well as the influence of electrical 

 stimulation on yeasts. 



