On Certain Bacteria from the Air of New York City. 359 



43. Bacillus flavocoriaceiis (Eisenberg). 

 Occvrrence. In the air of an apartment house on West 69th street. 

 llorjilioloffi/. Eonmled haeilli, singly or in masses .6X1-1-5//. 

 BioJof/i/. Nitrate quite well reduced but not completely. Growth on solid 



media rather dark yellow, shining, the edges inclined to be translucent. 



Scarcely any growth was obtained on potato. Rosolic acid a little 



deepened in color. 



44. Bacilli^ javaiiiensis n. sp? 



Occurrence. " Photobacterium javaniensis " from the college collection. 



Morphology. Short elliptical bacilli, almost like cocci, about 1-1.2/' in diam- 

 eter, in masses, short chains, twos or fours, not motile. 



Biology. Nitrate is strongly reduced but not completely; I'osolic acid un- 

 changed. Growth on agar thick, white, with a distinct yellow tinge; 

 grows slowly. 



Eemark-s. I have met with no description of this species and apply the name 

 Avith Avhich it was labelled. 



45. Bacillus decolorant minor n. sp. 



Occurrence. In the air of an apartment house on West 69th street. 



3IorphnJogy. Eounded l)acilli .6 /. 6-1.1//, frequently in pairs, not motile. 



Biology. Nitrate slowly reduced l)ut completely in twenty-eight days; rosolic 

 acid decolored; indol formed in peptone-salt broth. In gelatin cultures, 

 surface groAvth waxy white, not sliining, irregular and finely lumpy, 

 slight growth along punctvire. Surface colonies large, spreading, trans- 

 lucent white with irregular edges; deep ones dusky yellowish, not char- 

 acteristic. On agar translucent whitish, rather thin, shining. On potato 

 very slight brownish translucent growth, not abundant. 



46. Bacillus secundus Fullesi n. sp. 



Occurrence. In the air of the college yard near 59th street. 



3Iorph()logy. Large bacilli, short, rounded, singly, often constricted, .7-1X1- 



2 n ; not motile. 

 Biology. Nitrate quite well reduced but not completely ; rosolic acid not faded. 



GroA\i;h on agar white, rather thin, lactose-litmus made blue. 

 Remarks. Seems to be not contradicted by the description of Bacillus No. II. 



of Fulles. 



47. Bacillus aquatilis sulcatus quartus (Weichselbaum). 



Occurrence. In a trap of Utricularia vulgaris, Plattsburgh, N. Y., in Sejjtember. 



Morphology. Eounded bacilli, .6X1-5/^, in pairs or short chains; in older cul- 

 tures growing out into long straight chains ; the free cells actively 

 motile. 



Biology. Nitrate partly reduced; rosalic acid unchanged. 



Remarks. I have applied the name B. aqiiutilis sulcatus, No. IV., of Weichsel- 

 Imum, to this form, as it seems not to positively contradict the de- 

 cription. 



