34 STORRS AGRICULTURAL EXPERIMENT STATION. 
Morphology, a bacillus .6u by 1.24 to 2u. No. 82 forms chains, while they 
were.not found in No. go. 
Gelatin plate, the colony of No. 82 is at first round and opaque, but white. 
When reaching the size 1 mm. it becomes surrounded by a green halo. Later it 
becomes rough, irregular in shape, but still surrounded by the green halo. 
The colony of No. go spreads over the surface in a bluish white, clear colony, 
which frequently shows a darker granular center. No green halo appears. 
Agar, avery thin, hardly visible growth is produced, which spreads over the 
surface, and the agar is turned green. 
Louilion, there is formed a thin scum with a very slight cloudiness, and 
subsequently a sediment appears. After several weeks the liquid is quite 
cloudy and a sediment is noticeable, which is greenish in the case of No. 82, 
and brownish in the case of No. go. 
Milk, this organism produces no noticeable effect upon milk at any tempera- 
ture. 
Both of these cultures were inoculated into pasteurized cream, and after the 
cream was allowed to ripen 24 hours it was churned. The butter produced had 
a moderately good flavor, though not strong, and hardly different from butter 
made from pasteurized cream without inoculation. 
These six varieties which, as indicated, probably belong to four species, 
include all of the fluorescent forms which have been found in the dairy products 
in this vicinity. 
GROUP II. CHROMOGENIC TYPE. : (RED.) 
ee No. 209. Bacillus prodigious. 
Bacillus prodigious has been found a few times in milk in this vicinity. 
No. 62. Micrococcus rubidus lactis. (n. sp.) 
This species has been found only once, but it appears to be different from 
any previously described bacterium. It is a coccus form, 2on-motile, and fails 
to render milk red or to curdle it. In other characters it resembles &, pro- 
’ digious. 
Morphology, a coccus about tp, enveloped in a non-staining capsule. 
Gelatin plate; rapidly liquefying colonies, commonly with red pigment, | 
although many colonies fail to produce the pigment. 
Gelatin stab, a narrow funnel, soon widening and depositing red pigment. 
The whole gelatin liquefies and becomes red. 
Agar and potato; a blood red, thick, luxuriant growth. Pigment not pro- 
duced at 35°. Pigment most profuse at 23°. 
Milk, no curdling, although the milk becomes thickened slightly, with red 
margin. No change in reaction. In old cultures a mass of casein is seen 
floating in a clear liquid. 
No, 42. Micrococcus rosaceus lactis. (n. sp.) 
This specimen was obtained originally from Uruguay, 
isolated from milk in Middletown a culture that agreed wi 
respects. 
Morphology, a micrococcus, .8u in diameter, grouped in fours, 
but there was later 
th it in all essential 
at - yl J F t ; . 
a ee ee ee a ee 
e 

th tad 
a 
ee 7 Ss * 
¥ 
a 

