314 J. S. LAWRENCE AND W. W. FORD 



Gelatin stab. Growth along line of inoculation with cup-shaped 

 or funnel-shaped liquefaction. Dense turbidity in the liquefied 

 gelatin with a thick scum. Gelatin may be faint pink in color. 



Gelatin colonies. Small fine colonies round and regular or 

 irregular and spreading. Under low power they show fine 

 hairy outgrowths. Gelatin slowly liquefied. 



Broth. Turbidity and fine sediment. No scum. 



Peptone. Turbidity and fine sediment. No scum. 



Potato. Faint yellow growth becoming yellowish brown in old 

 cultures. 



Litmus milk. Gradual reduction of the litmus and slow but 

 complete digestion of the proteins. No coagulation. 



Blood serum. Non-spreading cream yellow growth becoming 

 yellowish brown in old cultures. No liquefaction. 



Fermentation tubes. Glucose. Turbidity in bowl. Arm clear. 

 No scum. Reaction alkaline. 



Saccharose. Reactions the same. 



Lactose. Reactions the same. 



Thermal death point. Spores destroyed by steaming 15 min- 

 utes in the Arnold sterilizer. They survive 7| pounds in the 

 autoclave but are destroyed by 10 pounds pressure. 



^Bacillus terminalis Migula 1900 



This organism was first obtained by Fliigge (1894) in 1894 

 and called by him, No. XII. It was subsequently correctly 

 named Bacillus terminalis by Migula and still later named 

 Bacillus lacteus by Chester (1901). On two occasions we have 

 isolated organisms which have the same morphology and method 

 of spore-formation as Bacillus terminalis but differ slightly in 

 cultural reactions. It does not seem wise to make a new species 

 since our strains may represent merely attenuated varieties of 

 Fltigge's organism. The following description is taken from 

 our own isolations and the points of differentiation between them 

 and Fltigge's original isolation are indicated. 



Morphology. Long thin bacilli with slightly granular pro- 

 toplasm measuring 0.375 by 2.25 to 4 microns in 24 hour agar cul- 



