DESCRIPTION OF >ll < DBS, 





In the depth of gelatine the 

 growth is very scanty. 



On the surface of agar the growth 

 is yellowish. 



On potato the growth is similar 

 but more abundant. 



Micrococcus concentricus 

 (Zimmermann). Cocci -9/iin diam., 

 in masses. 



Colonies bluish-grey. 



Inoculated in the depth of gela- 

 tine there is no growth in the track 

 of the needle, but concentric rings 

 form on the free surface. 



On agar the growth is greyish- 

 white and smooth. 



On potato yellowish and slimy. 



They occur in water. 



Micrococcus cremoides (Zim- 

 mermann). Cocci -8 p in diam., 

 occurring in masses. 



Colonies are spherical, granular 

 and yellowish. The margins are 

 dentated or irregular, and processes 

 extend into the surroundinggelatine. 



Inoculated in the depth of gela- 

 tine liquefaction occurs in the 

 track of the needle in a few days. 

 A yellow growth floats on the 

 liquefied gelatine, and a yellowish 

 mass subsides to the bottom of the 

 liquid. 



On agar a smooth shining layer 

 is formed, and on potato the growth 

 is abundant. 



They occur in water. 



Micrococcus crepusculum 

 (Cohn. Mowu crcpwcuktm, Ehren- 

 berg. Mibrokolcke* in nmlenden 

 *<ib*tr<itf>n, Fliigge). Round or 

 short oval cells, scarcely 2 /* in 

 diam. : singly or in zoogloea. 



They occur in various infusions 

 and putrefying fluids in company 

 with Bacterium termo. 



Micrococcus cumulatus tenuis 

 (Besser). Large cocci, oval : in 

 masses. 



Colonies on agar have a brown 

 nucleus. 



Inoculated in the depth of gela- 

 tine they form a white filament, 

 and on the surface a transparent 

 laver. 



"in broth there is an abundant 

 deposit, and the supernatant liquid 

 is clear. 



They occur in mucus from tin- 

 nose. 



Micrococcus endocarditidis ru 

 gatus (Wrirhsrlbaum). Cocci re- 

 sembling pyogenic staphyloco. 



ColoMH-v h;ivr ;i In-own or M'lloW- 



i-h brown nucleus. 



In the depth of agar there 

 slight growth in the track of th.- 

 needle, and a wrinki layer 



on the surface. 



On potato the growth is dry and 

 brownish. 



On blood serum th growth i 

 colourless and adher> 



Injectedsubcutan.-ou-ly.thry pro- 

 duce, in rabbits, local swelling and 

 redness, and suppuration in guinea- 

 pigs. Injected into the veins I 

 injury to the aortic valves, they 

 produce endocarditis 



They were isolated from a case 

 of ulcerative endocarditis 



Micrococcus fervidosus (Ada- 

 metz). Cocci '6 p. in diam., in pairs 

 and in 



The deep colonies are pale-yellow, 

 and look like watery droplets 

 superficial colonies are granular and 

 irregular with jagged edges. 



Inoculated in the depth <>f gela- 

 tine a granular filament develoi 

 the track of the needle, and on the 

 surface a circular patch with den- 

 tated margin. 



On agar the growth is whit, 

 slimy, and on potato greyish - 

 white. 



They occur in 



Micrococcus Finlayensis 

 nberg). Cocci ~< to 7 ^ in 

 diam., singly, in pairs, tetrads, and 

 in masses. 



In the depth of gelatine they 

 produce a growth in th 

 the needle, with 1 

 the upper part with a pale-yellow 

 deposit. 



< )n agar the growth is pale-yellow. 



'I' hey were isolated from the liver 

 in a fatal case of yellow f- 



Micrococcus flavus desidens 

 (Flii'_ in P*>r, 



i sofa few elein 



Colonies yellowish-^ 



Inoculated in th. gela- 



tine they grow along the track of 



