MICROCOCCUS INTRACELLULARIS MENINGITIDIS 379 



large numbers, both in this and foreign countries and the value of the 

 serum as a therapeutic agent seems firmly established. 



Hiss and Zinsser 1 have treated a number of meningitis patients with 

 subcutaneous injections of leucocyte extracts and believe that they have 

 favorably influenced the course of the disease. 



Pseudomeningococcus. Elser and Huntoon 2 have described a diplo- 

 coccus very similar to the meningococcus which they differentiated 

 from it only by serum reactions. This diplococcus could be identified 

 only by, agglutinin absorption tests. They named it pseudomeningo- 

 coccus. 



1 Hiss and Zinsser, Jour. Med. Res., Nov., 1908. 



2 Elser and Huntoon, Jour. Med. Res., xxi, 1909. 



