46 THE MICROSCOPE. Mar. 



folded and you will be convinced that "there are sermons in 

 stones and good in everything." 



SCIENCE-GOSSIP. 



Bacterium Coli Commune is considered by Ekehorn a 

 cause of appendicitis. 



Ice Dangerous. — However pure in appearance, ice may con- 

 tain disease germs capable of development when taken into the 

 system or brought into contact with food or drink. The evils 

 attributed to the temperature of ice may be due to the germs. 



RECENT PUBLICATIONS. 



The Microscope and Microscopical Methods. By Simon Henry 

 Gage. Fifth edition, rewritten, pp. 1G5, 8°. Ithaca, N. Y., 

 Comstock Publishing Co. 1894. 



The earlier editions of this work by Professor Gage have been 

 so highly appreciated by students and teachers interested in the 

 study of the microscope that a formal introductory announce- 

 ment of the new edition is not necessary. The fifth edition, 

 now before us, is for the greater part rewritten, more profusely 

 illustrated, and much new and practical subject matter is added. 



The book consists of 165 printed pages, the right hand page 

 throughout the book being left blank for the insertion of notes. 

 The subject matter is arranged in 280 numbered paragraphs 

 which are divided into eight distinct chapters. These contain 

 a clear and concise description of: (1) The microscope and its 

 parts. (2) Lighting and focussing, manipulations of dry, ad- 

 justable and immersion objectives ; care of the microscope and 

 of the eyes. (3) Interpretation of the appearances under the 

 microscope. (4) Magnification of the microscope. Micrometry. 

 (5) Drawing with the microscojje. (6) Micro-spectroscope. and 

 micro-polariscope, use and application. (7) Slides and cover- 

 glasses, mounting, labelling, and storing microscopical prepara- 

 tions. Experiments in micro-chemistry. (8) Photo-micro- 

 graph, etc. Bibliography and Index. 



In describing the various parts of the microscope and their 

 functions, the greatest care has been taken to make perfectly 

 clear all the terms used in connection with the microscope. 



