SYSTEMATIC AND DESCRIPTIVE. 119 



and general weakness ; their feathers are ruffled, 

 their wings hang loosely, and their eyelids close ; 

 convulsions set in, and death follows. At the 

 autopsy greyish nodules are found in the lungs, 

 liver, spleen, and kidney; in and around the 

 capillaries of these nodules, and in the blood of the 

 heart, the cocci are found in great numbers in 

 zoogloea, and more rarely in chains. Inflammatory 

 change in the surrounding tissue is absent. 



Genus II. Merismopedia. 



Merismoped ia Gonorrhoeae (Coccus of 

 Gonorrhoea). Cocci 0*83 //, in diam., singly, in 

 pairs, or tetrads, or zoogloea groups. They are 

 found in gonorrhoeal pus adhering to the pus 

 corpuscles and epithelial scales. Artificial cultiva- 

 tions have been carried out,* and the pathogenic 

 character of the cocci established by inoculation. 



Micrococcus tetragonus. Cocci about i //. 

 in diam., in groups of four (tetrads), surrounded 

 by a hyaline capsule. They are found in the 

 sputa of phthisical patients and in the walls of 

 tubercular cavities. In a test-tube of nutrient 

 gelatine they form an irregular white growth, more 

 especially in the upper part of the needle track 

 (Plate IV., Fig. i). On the sloping surface of 

 nutrient agar-agar thick, whitish, heaped-up masses 

 develop. Guinea-pigs and mice inoculated with a 



* Bockhart, Sitzungsberichte der Phys. Med. Gesell. Wurzburg* 

 1882. 



