728 MEDICAL MYCOLOGY 



in old cultures. When the drops are removed, the colony is grayish green 

 with a moldy odor. On carrot, growth slow, chalky, pure white and very 

 thin. No growth on turnip. On broth, also asparagus and maltose broth, 

 grayish fiocci at bottom of tube, liquid clear, some flocci adhering to the walls, 

 or if they reach the surface they become chalky and float ; color of broth 

 deepens; odor is slightly moldy. On coagulated egg albumen, colony chalky, 

 medium becomes translucent, then brown, and is partially liquefied. On serum, 

 growth slow with partial liquefaction of medium. Milk slowly coagulated 

 then the eoagulum is digested, leaving a clear brown liquid in which the 

 colonies sink. 



Most recent authors have referred Streptothrix Foersteri Gasperini to this 

 species, but since it differs in some respects, I shall give the description below : 



Streptothrix Foersteri Gasperini, Ann. Micrographie 2: 449-474, Pis. 5-7, 

 1890 non aliorum. 



The cultures appeared as contaminants from the air. 



Mycelium l/x in diameter, spores 1-1. 5/a in slightly curved terminal chains. 



Colony on gelatin at room temperature, round, elevated, moist, slightly 

 yellowish at first, becoming more elevated, white, powdery, medium liquefied 

 late and very slowly. Agar colonies round, hemispheric with zones of sporu- 

 lation, otherwise similar to gelatin colonies. Serum slowly liquefied. Little 

 growth on cooked potato. On broth, a thick pellicle is produced. 



Probably the organism isolated from vaccine from heifers by Sabrazes 

 & Joly, C. R. Soc. Biol. 50: 134, 135, 1898, also belongs here. 



Actinomyces minimus (LeCalve & Malherbe) Dodge, n. comb. 



Oospora forme de Microsporum [Audouini var. equinum] Bodin, Arch, de 

 Parasitol. 2: 606-609, 1899. 



Trichophyton minimum LeCalve & Malherbe, Arch, de Parasitol. 2: 218- 

 250, 489-503, 1899; Ibid. 3: 108-110, 1900. 



Microsporum minimum Castellani & Chalmers, Man. Trop. Med. ed. 8, 

 993, 1919. 



Isolated from ringworm of horse and dog. Sabouraud suggests that this 

 was a saprophyte, as Bodin was unable to repeat the results of LeCalve and 

 Malherbe. 



On Sabouraud agar, surface becomes covered with yellowish gray eleva- 

 tions, 6 X 4 X 1.5-2 mm. high. Colonies on beef agar circular, little ele- 

 vated, with sinuous rays. Center elevated, grayish, powdery. On oatmeal 

 agar, growth shows colony with irregular margins, eroded, granular, yellow- 

 ish. Colonies on potato are eerebriform, sinking into the medium, white. On 

 serum gelatin, there appears a grayish white efflorescence. Growth on horse- 

 hair is in the form of irregular plaques, 10-15 mm. in diameter, yellowish gray, 

 slightly elevated, chalky. On straw, colony is irregular and grayish. In 

 turnip broth, there are floating powdery islets and spongy, mucoid sediment. 

 In oatmeal broth, growth is more rapid, with a sort of grayish pellicle form- 

 ing. In carrot broth, growth still better; in potato broth, still better. Pellicle 



