466 



MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



Acid (jelatm. — Growth is not so vigorous. 



Agar slant. — TLie growth spreads over the surface to the wall of the tube as a thin hazy layer.. 

 The agar acquires a brownish green color. 



Bimillon. — Clouded and whitisli sediment; acquires a slightly greenish tint and a thin pellicle. 



Potato. — Thin, moist, viscid looking, widely spreading, dirty, grayish growth. 



Litmus millc. — Does not seem to coagulate or decolorize the medium. There is a whitish 

 sediment at the bottom. After three weeks the milk is still blue, but perhaps lighter in tint. 



Siif/ar (jclatiii in deep stab. — Fair growth of discrete and confluent minute colonies. There is 

 some gas production ; no liquefaction. 



Rosolic acid. — The color seems to be deepened after some time. 



Tndol prodnetion. — Good reaction; does not produce nitrites. 



Relation to temperature. — Grows at the temperature of the room and at 35° to 3GoC. 



Micrococci . . 

 Cladoihrices 



Siimnuirii of the orgioiisms describeil. 



( Not liquefyiug the jjelatiii ; chromogenic; yellow. 

 ( Liquel'yiiig the gelatin; uouchromogeiiic. 

 Li(jiK'i'yiiig the gelatin; ) Brown, 

 chromogeuic. ( Red. 



Bacilli not 

 gelatin an 

 spores, 



iiqnet'ying 

 (1 not for 



the 

 miug 



' Chromogenic. 



Nouchromogeuic. 



' Yellow. 



Red. 

 Green. 



'Chromogenic. 



BaciUi lique Tying the gela- 

 tin. 



f Yellow. 



Red. 

 Green. 

 [ Blue. 



■ Form spores. 



Nonchromogeuic. 



No spore formation. 



JI. Orbiculatus.* 



M. (Simjilex.* 



C. Dichotoma (Cohn).* 



C. Riifula.' 

 f B. Flnvocoriaceus.* 

 ' B. Ovalis.* 

 [B. Laciuiatus.* 



B. Latericeus.* 



Flnoreseens ineoguitus. 

 'luorescens foliacens. 



B. Flnoreseens couvexus. 



B. Rugosus. 



fB. Fl 

 ! B. Fl 



< B. Flnoreseens Sehnylliillieusis.. 

 \ B. Flnoreseens mutabilis. 



\ B. Janthiniis. 

 ( B. Ciernlens, 



fB. Subtilis. 

 I B. Detrudens. 

 J B. C'rinitns." 

 ] B. Ramosus. 



B. Siiblanatus. 



B. Capillaceus. 



fB. 



B. 



B. 



B. 



B. 



B. 



B. 



B. 



B. 



B. 



B. 



B. 



B. 



B. 

 IB. 



Delabens. 



Knjilieatns. (<r) 



Dnplicatus. (/i) 



Faimionteusis. 



Genienlatns. 



Flexiiosn.s." 



t'oadnnatns. 



C'onvolutiis.* 



JInltistriatns. 



Centrifugaus. 



Centrifngaus. 



Finibriatns. 



CohaTeu.s. 



Nebnlosn.s. 



Proteus mirabilis. 



(a) 

 (ft) 



KoTE. — Those marked * .are nonmotile or doubtful. 



