Micrococcus. 1 3 



[16. M. insectorum, Burrill (I.e., p. 319). 



Cells obtusely oval, isolated or in pairs, rarely in chains, 

 71 p, (usually '8 /x) long, '55 p, broad; movements oscil- 

 latory only ; forming a zooglcea (?). 



In the digestive organs of the chinch-bug (Blissus 

 leucopterus). 



These insects sometimes die off in great numbers during apparently 

 favourable weather in summer, with every appearance of a contagious 

 disease, and it is probable that this Micrococcus is the cause of the 

 disease. It may be cultivated in meat broth.] 



[17. M. gallicidus, Burrill (I.e., p. 320). 



Cells globular, single or in pairs, '5-72 p. in diameter; 

 movements oscillatory only. 



In the blood of the domestic fowl affected with " chicken- 

 cholera ; " often described, but apparently never named 

 before.] 



[18. M. suis, Burrill (I.e., p. 320). 

 Bacillus suis, Detmers. 



Cells globular, or elongated and more or less contracted 

 in the middle, single or in pairs, rarely in chains, "j '8 //. in 

 diameter. 



In the blood and other fluids of pigs affected with 

 " swine-plague " or "hog-cholera."] 



Besides the diseases mentioned, it is probable that many 

 others,, e.g. cholera, measles, scarlet fever, typhus, syphilis, 

 etc., are caused by Schi'zomycetous fungi. But no trust- 

 worthy observations are yet published concerning them. (See 

 Appendix C.) 



[An enormous number of other Micrococci have been 

 described by Eberth, Chalvet, Hallier, etc., but for the 

 most part without names and without precision. (See also 

 Bacterium, Chapter IV., infra.}] 



