32 THE AMERICAN MONTHLY [Jan., 



_ Take 40 grammes of aqueous solution of methylene blue; 20 

 grammes of i per cent solution of eosin dissolved in 70 per cent 

 alcohol ; 40 grammes distilled water. Place the cover glasses in 

 this solution and heat in an incubating oven at 37°C from three 

 to six hours. Then wash in water, dry and mount in balsam. 

 The eosin stains the red blood corpuscles red and the leucocytes 

 blue. The bacillus is seen in these as short rods often resemb- 

 ling diplococcus. 



MICROSCOPICAL SOCIETIES, 



Birmingham Microscopists' and Naturalists' Union. 



September 18. — A series of microscopic fungi and one of cup 

 corals cut and polished in two directions were shown. Also a 

 collection of Livinsea peregra showing various stages of malfor- 

 mation. Mr. Nelson believed that some of these forms were 

 due to a sudden influx of food which caused the shells to enlarge 

 very quickl}' ; afterwards when there is a scarcity of food the 

 shell is too large and septa are formed to cut off inconvenient 

 corners. 



NEW PUBLICATIONS. 



llkistated Guide to British Mosses. By H. G. Jameson, pp. 83, 



59 figures. 

 The introduction treats of (1) the moss plant in general, (2) 

 the stem and its appendages, (3) the leaves, (4) the capsule. (5) 

 tlie spores, (6) the inflorescence. Then follow keys to genera 

 and species and directions for examination of specimens. This 

 is the only complete key to sj^ecies that has been published. 

 The book costs S2.00 and is to be had from the author whose 

 address is Eastbourne, England. 



Report on the Microscopic Examination of Blood from a Patient 

 Suffering from Splenic myelogenous Leuksemia. B}' Frank S. Aby. 

 Reprint from Bulletin of State University of lo^ra, pp. 311-821. 



We have not space to notice this important paper but recom- 

 mend all specialists studying the blood to send to Prof. Aby at 

 Iowa City for a copy. He has made some very careful counts 

 and measurement of corpuscles and leucocytes. 



