The Microscope. 93 



Apropos of the statement in the December number, that Zeiss 

 had recently issued his 10,000th microscope, we learn that Beck & 

 Co., London, have manufactured over 14,000, and, that of this num- 

 ber, over 5,000 have passed through their Philadelphia house in 

 this country. A good record. 



A SCIENTIFIC society of Haarlem, Holland, offers a gold medal and 

 400 florins (about £33) for the best treatise, which may be written in 

 English, on the researches of M. Pasteur, to be sent in before April, 

 1887. — Pop. Science News. 



The death is announced of M. Jules Lichtenstein, the well- 

 known investigator of the phylloxera.. 



The committee on scientific facts of the U. S. Hay Fever Asso- 

 ciation, offers a prize of $25 for the best essay on hay-fever sent to 

 the chairman before April 30 of the present year. The Rev. Samuel 

 Lockwood, Ph. D., treasurer of the N. J. Microscopical society, is 

 the chairman, and may be addressed at N. Freehold, Monmouth Co., 

 N. J. 



Milne Edwards has found five new species of telphasidae in the 

 Brazza collection from the French Congo. 



T. B. Stowell, Ph. D., in a paper read before the American 

 Philosophical Society, has given, in a; most concise and thorough 

 manner, the anatomy of the trigeminous nerve of the cat. Dr. 

 StoweU has, in this contribution to comparative neurology, cleared 

 up many points which have hitherto been obscure, and has thus been 

 of great service to students of human physiology. His paper on the 

 vagus nerve in the same animal, read before the same society some 

 years ago, was equally valuable, and together they will have an im- 

 portant bearing on the future of neurological science. — Science. 



BOOK REVIEWS, 



How TO Work with the Bausch & Lome Optical Co.'s Microtome, and a 

 Method of Demonstrating the Tubercle Bacillus, by James E. 

 Reeves, M. D. pp. 27. Rochester, N. Y. : Bausch & Lomb Optical 

 Co. 1886. Price 50 cents. 



In this little book Dr. Reeves presents a brief, yet complete sys- 

 tem of rules for using the microtome. The methods which the 

 doctor uses for preparing specimens for cutting, are imbedding in 

 paraffin, mounting with acacias on cork, and the use of celloidine, to 

 say nothing of the new Reeves commentater method, which is well 

 worth attention and a trial by all workers who have heretofore used 

 liver instead. 



