96 THE MICROSCOPE. 



animal tissue, urinary deposits, etc. The objects are magnified 

 from 500 to 1,000 diameters. It is a valuable contribution to the 

 department of science in which we are working, and it should be in 

 the library of the histologist, whether he works in the animal or 

 vegetable kingdom. We are unable to give the price, but will try 

 and ascertain it and announce the same to our readers. Those 

 interested had better address the editor as given above. 



Synopsis of the Fresh-Water Rhizopods. By Romeyn Hitchcock, F. R. 

 M. S. 8 vo. ; pp. 58. Four full page lithoe:raph plates, Price $r.oo. 

 Address the author, 53 Maiden Lane, New York city. 



Mr. Hitchcock gives us a condensed account of the genera and 

 species of the fresh water rhizopods, founded on Prof. Leidy's large 

 work, published by the Government. To those unable to obtain 

 Prof. Leidy's work this synopsis will be very acceptable, and to those 

 who have a copy of the large work this will prove a great aid and 

 convenience. It answers the purpose of a key, and with the admira- 

 bly arranged index and check-list the student can readily keep a 

 record of his work. The four plates illustrate about forty of the 

 more common forms. Mr. Hitchcock has done his work well and it 

 will not fail to give satisfaction. 



A Treatise of Natural Philosophy : Based on the Experimental Method. 

 By Thos. R. Baker, Ph. D., Professor of Physics in Stale Normal 

 School at Millersville, Pa. Published by Porter «& Coates, Philadelphia, 

 Pa. 



We believe that the teachers in our normal and high schools will 

 be well pleased with this work. The subject is presented in a clear, 

 concise and logical manner. A large number of experiments are 

 given in careful detail, and the student is taught the best way to 

 illustrate each subject. We predict a general recognition of the 

 merits of the book. 



Aid to the Study of Ski.x Disease: With Treatment, Classification and 

 Notes on Diet and Hygiene. By L. Duncan Bulkley, M. D. 12 mo.; 

 pp. 148; illustrated. Presley Blakiston, Philadelphia, Pa. 



The author succeeds in presenting the subject in such a popular 

 way that diseases of the skin may be either avoided or recogized and 

 proper aid sought in time. It serves as a guide for the preservation 

 of the health of the skin and as a popular dictionary in dermatology. 

 It is extensively used in the Jefferson Medical College of Philadel- 

 phia, and is considered very convenient. A valuable addition to our 

 health primers; better than a good many we have seen claiming much 

 more. 

 Journal of the Royal Microscopical Society, June, 1S82. 



Full of information from the first to the last page. We cannot 

 understand why more of our microscopical friends do not subscribe 

 for it. Address, Editor Royal Microscopical Journal, Kings College, 

 Strand, W. C, London, Eng. 



Journal de Micrographie: Dr. J. Pelletan. 176, Boulevard Saint-Ger- 

 main, Paris, France. 



This is a microscopical monthly we are always glad to greet. 



