134 



THE POPULAR SCIENCE MONTHLY 



tieularly remarkable for the number and 

 variety of machines for generating electrici- 

 ty and for the appliances used in electric 

 lighting, and these two subjects are treated 

 in considerable detail. In some cases a 

 slight history of antecedent inventions is 

 prefixed to the description of objects ex- 

 hibited, to show more clearly the progress 

 and improvement made. 



The Fallacies in "Progress and Pov- 

 erty," ETC. By William Hanson. New 

 York : Fowler & Wells Company. Pp. 

 191. Price, $1. 



Besides taking issue with Mr. George on 

 some of the points in " Progress and Pov- 

 erty " and " Social Problems,"' the author 

 criticises Henry Dunning Macleod's "Eco- 

 nomics" and adds chapters of his own on 

 the "Ethics of Protection and Free Trade " 

 and the "Industrial Problem considered a 

 priori.''^ Mr. Hanson is as radical as Mr. 

 George, but differs from hira in particular 

 features of his views, especially as they bear 

 on " the Law of Rent " and " Interest " ; 

 that is, Mr. George is too conservative for 

 him. He appears to suggest a solution of 

 all difficulties in the acceptance of Christian 

 principles as he interprets them. 



Cholera, and its Preventive and Cura- 

 tive Treatment. By D. N. Ray. New 

 York : A. L. Chatterton Publishing Com- 

 pany. Pp. 128. 



The author of this treatise is a native, 

 high-caste Indian, of English and American 

 education, and is connected with the Dispen- 

 sary of the Homoeopathic Medical College 

 in this city. He began to collect the mate- 

 rial for his work in his native land, where 

 he had the disease under constant observa- 

 tion. In his essay, in which be aims to 

 group all the facts known respecting cholera, 

 he considers the history of the disease, its 

 etiology, modes of propagation, predisposing 

 circumstances, the exciting causes, symp- 

 toms, complications, and sequelae, and other 

 accompanying features, the method of treat- 

 ment, and the diet of the patient. Eight 

 theories that have been brought forward 

 to account for the origin of cholera are re- 

 viewed in the chapter on diagnosis. The 

 treatment recommended is according to ho- 

 moeopathic principles. 



On a New Method op recording the Mo- 

 tions OF THE Soft Palate. By Har- 

 rison Allen, M. D. Philadelphia : P. 

 Blakiston, Son & Co. Pp. 34. 



A NEW apparatus and its application are 

 described in this volume, by which great 

 delicacy is secured in transcribing the differ- 

 ent motions, some of them extremely mi- 

 nute, of which the soft palate is susceptible. 

 By it are recorded the changes that take 

 place in the acts of swallowing, exhaling, 

 coughing, hawking, sniffling, etc., and in 

 articulation, even to the differences between 

 the long and short sounds of the vowels. 

 Dr. Allen suggests that his apparatus may 

 have even a wider range of application than 

 is delineated here, and that it may be made 

 available for the comparative study of lan- 

 guage, for the instruction of the deaf, and 

 for the formation of a system of short-hand 

 writing. 



The Formation of Poisons by Micro-organ- 

 isms. A Biological Study of the Germ 

 Theory of Disease. By G. V. Black, 

 M. D., D. D. S. Pluladelphia : P. Blakis- 

 ton, Son & Co. Pp. ITS. Price, $1.50. 



This volume contains a series of lectures 

 which were delivered before the students of 

 the Chicago College of Dental Surgery, and 

 is divided into two parts. The first part 

 embodies a review of the history and growth 

 of the germ theory of disease, and is sub- 

 sidiary to the second part, which is given, 

 the author says, because he had " something 

 to say that I thought ought to be said at 

 the present time." The purpose of this 

 " something to say " is to suggest a theory 

 of the manner in which the germs act in 

 producing disease. It is that, through the 

 power which the bacteria possess in the re- 

 moleculization of matter, they cause the 

 formation and diffusion through the system 

 of organic alkalies having poisonous quali- 

 ties comparable with those of strychnine. 



The Orchids of New England : A Popu- 

 lar Monograph. By Henry Baldwin. 

 New York: John Wiley & Sons. Pp. 

 158, with Plates. 



The variety and strange beauty of the 

 tropical orchids, so much sought for for 

 greenhouses, give to the family a rare popu- 

 lar interest ; and the effort to make our peo- 

 ple acquainted with the other members of 



