CLASSIFICATION OF THE BACTERIA. 77 



the intestine of silkworms sick with " la flach- 

 erie" (Pebrine). 



In a more recent work, Cohn (Beitrage, 1875, 

 p. 201) gives them an oval form and a diameter 

 of 0.5 fi, at the outside. 



Hallier has described many other Micrococci in 

 diverse contagious or virulent affections. We will 

 only refer to them in a summary manner : ' — 



M. of the variola of animals, Hallier. 



Small M. endowed with active movement, 

 furnished with a very delicate caudal append- 

 age, sometimes united in the form of little elon- 

 gated rods, found in pustules, spontaneous or 

 inoculated, in the lymphatic canals and the gan- 

 glia of animals attacked with variola. 



M. of rugeola, Hallier. 



Very small colorless M., having often a caudal 

 prolongation, in the sputa and blood of the sick. 



M. of scarlatina, Hallier. 



M., free or in colonies, on the surface or in 

 the interior of the blood corpuscles, or in 

 chains. 



M. of epidemic diarrhoea, Hallier. 



M. in intestinal matters with vibrios, cells, 

 and monads. (?) 



1 "It is quite probable that Hallier comprises, in part, under the 

 name of Micrococcus the same organisms that I call spherical bacteria : 

 but the doctrine of Hallier concerning Micrococcus, as has already been 

 pointed out by Hoffmann and de Barry, is so covered by inexact asser- 

 tions and improbable hypotheses, that it is impossible to draw any con- 

 clusions from the facts he has observed." — Cohn, Beit. II, p. 148. 



