DESCRIPTION OF SPECIES. 



563 



gelatine they slowly liquefy it along 

 the whole needle track, and form 

 on the surface an orange-yellow 

 growth. On potatoes they slowly 

 develop the same pigment. 



Sarcina Candida (Reinke). 

 Cocci 1-5 to 1-7 /x in diam., singly, 

 in pairs, and in tetrads. 



Colonies are circular and shining, 

 white, and later yellowish. 



Inoculated in the depth of gela- 

 tine liquefaction quickly takes place 

 along the track of the needle. 



On the surface of agar a white, 

 moist layer develops. 



They were found in the air of 

 breweries. 



Sarcina flava(De Bary). Small 

 cocci in packets. 



Inoculated in the depth of gela- 

 tine they produce liquefaction. 



On agar they form a yellow 

 layer. 



On potato the growth is limited 

 and yellow. 



They were isolated from beer. 



Sarcina hyalina (Kiitzing). 

 Cocci round, 2'5 ^ in diam., almost 

 colourless. United in families of 

 4 to 24 cells, reaching 15 /u in diam. 



They occur in marshes. 



Sarcina intestinalis (Zopf). 

 Cocci in groups of four or eight. 

 Yery regular in form ; never in 

 the large packets which occur in 

 Sarcina ventriculi. 



They are found in the intestinal 

 canal, especially the caecum, of 

 poultry, particularly fowls and 

 turkeys. 



Sarcina litoralis (Oersted). 

 Cocci 1-2 to 2 fj. in diam., bound 

 together in 4 to 8 families, which, 

 in their turn, may unite and in- 

 clude as many as 64 tetrads. 

 Plasma colourless ; in each cell 

 1 to 4 sulphur granules. 



They were found in sea water 

 containing putrefying matter. 



Sarcina lutea (Schroter). 

 Cocci singly, in pairs, tetrads and 

 packets. A single individual in a 

 tetrad may be divided into two, or 

 into four, so that a tetrad within a 

 tetrad results. 



Colonies are round, slightly 

 granular in appearance, and yellow. 



Inoculated in the depth of 

 gelatine they grow rapidly ; the 

 gelatine becomes liquefied, and the 

 yellow growth sinks to the bottom 

 of the tube. 



as* 



FIG. 224. SARCINA x 600 (FLUGGE. 



Cultivated in agar they form a 

 colourless growth along the track 

 of the needle, and a bright canary- 

 yellow layer upon the surface. 



On potato they form a yellow 

 layer. 



They are present in air. 



Sarcina mobilis (Maurea). 

 Cocci 1-5 p. in diam., in pairs, and 

 in tetrads. They are motile. 



Colonies, at first white, become 

 brick-red. 



Inoculated in the depth of gela- 

 tine, there is, after several days, a 

 slight growth along the track of 

 the needle, and a patch of growth 

 on the free surface which gradually 

 turns red. In about two weeks 

 liquefaction produces a funnel- 

 shaped appearance ; later the lique- 

 faction extends to the sides of the 

 test-tube. 



In broth turbidity is produced, 

 and a yellowish-red deposit. 



On agar the growth, at first white, 

 changes to a brick-red colour. 



There is no growth on potato, 

 and milk is not coagulated. 



They were isolated from ascitic 

 fluid. 



Sarcina pulmonum (Hauser). 

 Cocci from 1 to 1*5 ft in diam., in 

 tetrads and packets. 



Colonies white and small. They 

 are coarsely granular. 



Inoculated in the depth of gela- 

 tine the growth is scanty in the 

 track of the needle, but on the free 

 surface there is a circular, well- 

 defined, translucent patch, which 



