118 STORRS AGRICULTURAL EXPERIMENT STATION. 
Agar streak.—A spreading, thick, smooth growth of an orange color, some- 
what viscous. 
Fermentation tubes.—No acidity, no gas, no closed arm growth in any sugar 
bouillon. 
Bouillon,—A sediment, turbidity and a pellicle. 
Milk,—No action on milk. 
Potato,—Luxuriant, thick, smooth, orange-brown. 
Grows at 37” Aerobic. 
S. lactis citreus [.n. >. A lemon-yellow, liquefying Streptococcus. 
Morphology.—A streptococcus. Size, .64-14. Gram stain positive. 
Gelatine colony.—A small colony, with clear liquid and slow liquefaction. 
Not characteristic. 
Gelatine Stab.—A slow liquefier with stratiform liquefaction. 
Agar streak.—A luxuriant, thin, lemon-yellow growth, 
Fermentation tubes.—No acidity, no gas, no growth in closed arm in any 
sugar bouillon. 
Bouillon.—A turbidity, a sediment, and a pellicle. 
Milk.—Slightly alkaline, or no change in reaction, and a slight digestion. 
Potato,—Luxuriant, moderately thick, lemon-yellow. 
Grows best at 20°; less luxuriantly at 37° Aerobic. 
The culture from which this was taken was from the centre of a cheese. 
Variety A.—A second culture from the same cheese near the surface, differed 
in producing an acidity in dextrose and saccharose, and no pellicle nor diges- 
tion of milk. 
Variety &.—From Storrs; foundin milk. Did not liquefy the gelatine plate, 
but produced a thin, flat colony, 2.5 mm. in diameter. 
Fartety C.—From milk in Middletown. Produced a slowly-liquefying, 
granular colony, 2-3 mm. in diameter; a wrinkled growth on agar; a pellicle 
upon bouillon, and a digestion of milk. 
Varie‘y D.—Showed no potato growth, but an acidity in milk, although the 
milk digested. 
Variety £.—¥rom cheese. Showed no potato growth and a very slow lique- 
faction, with no milk digestion. We have no hesitation in regarding them all 
as belonging to the same type. 
S. lactis Rogertn, 8s. A lemon-yellow, liguefying Streptococcus, 
Moi phology.—Size, .7v-I4. Gram stain irregular; chains produced. 
Gelatine colony.—A slow liquefaction, with a thin, transparent, granular 
colony, at first white. Lzémus gelatine is intensely alkaline, with a spindle- 
shaped colony. 
Gelatine stab.—A needle growth and a stratiform liquefaction beginning in 
one day. 
Agar streak,—A luxuriant, thick, lemon-yellow to brown growth. 
Fermentation tubes.—No acid, no gas, no growth in closed arm in any sugar 
bouillon. 
Bouillon.—A sediment and turbidity. 
