514 



DESCRIPTION OF SPECIES. 



mann). — Rods sometimes curved, 

 2-4 to 3-6 fj. in length, -77 fi in width, 

 and filaments. 



The colonies are greyish or 

 yellowish-grey, with concentric 

 markings. 



The bacilli inoculated in the 

 depth of gelatine produce isolated 

 colonies in the track of the needle, 

 and a translucent film on the free 

 surface ; followed after some time 

 by slight liquefaction. 



On agar they produce a bluish- 

 white layer. 



There is scarcely any growth on 

 potato. 



They occur in water. 



Bacillus gracilis auaerobies- 

 cens (Vaughan). — Rods. 



The colonies are brownish. 



The bacilli inoculated in the 

 depth of gelatine produce a copious 

 growth in the track of the needle, 

 and gas bubbles, and a film on the 

 surface. 



On agar they produce a thin 

 layer, and on potato a yellowish- 

 white mass. 



They occur in water. 



Bacillus granulosus (Russell). 

 — Rods singly, in pairs and in 

 masses, and long filaments. Spore- 

 formation present. 



The colonies have concentric 

 linear markings. 



The bacilli inoculated in the 

 depth of gelatine cause slow lique- 

 faction spreading downwards in 

 the track of the needle. 



On the surface of agar they form 

 more or less isolated whitish or 

 yellowish colonies. 



In broth they produce turbidity, 

 and on potato a thick shining layer, 

 which is at first white and later 

 brownish. 



They were isolated from deep-sea 

 dredgings. 



Bacillus graveolens (Bordoni- 

 Uffreduzzi). — Very short rods, -8 jj, 

 in length. 



The colonies are greyish-white, 

 and liquefy the gelatine. 



The bacilli inoculated in the 

 depth of gelatine produce rapid 

 liquefaction in the track of the 

 needle. They colour the gelatine 



greenish-yellow, and produce a foul 

 odour. 



On potato the culture is brown- 

 ish. 



They were isolated from skin 

 from between the toes. < 



Bacillus guttatus (Zimmer- 

 mann). — Rods 1 to 1'13 /a in length ; 

 ■93 in width ; singly, in pairs, and 

 in chains. 



Colonies bluish-grey ; granular. 



The bacilli inoculated in the 

 depth of gelatine develop colonies 

 in the track of the needle, and a 

 greyish opalescent film on the 

 surface. 



On agar the growth is greyish- 

 white. On potato it is yellowish 

 and slimy. 



They occur in water. 



Bacillus halophilus (Russellj.— 

 Rods 1'5 to 3'6 /i in length, '7 fi in 

 width ; singly and in pairs ; and 

 toruloid involution forms. Motile. 



The colonies liquefy gelatine and 

 become frothy from abundant for- 

 mation of gas. 



The bacilli inoculated in the 

 depth of gelatine grow in the track 

 of the needle, and excavate the 

 jelly at the upper part. 



They were isolated from deep- 

 sea dredgings. 



Bacillus Hausenii (Rasmussen). 

 — Rods 28 to 6 /i long, '6 to 8 /* 

 wide. 



Cultivated on sterilised potato, 

 they form in four days a chrome- 

 yellow layer with an agreeable 

 fruit-like smell. Two or three days 

 later the growth dries, and changes 

 to an orange-yellow colour ; later 

 it becomes yellowish or brown, and 

 at the same time spores are formed 

 17 /x long, I'l fi wide. The colour- 

 ing matter is insoluble in most 

 reagents. 



The bacilli occur as a yellow or 

 whitish skin on nourishing solu- 

 tions, malt infusion, broth, and 

 wine, which have been kept at 

 31° to 33" C. 



Bacillus Havaniensis lique- 

 faciens. — Rods -8 fi in width, 12 

 to 5 /i in length, singly, and in 

 pairs ; and filaments. Motile. 



The colonies are milky, irregular 



