126 STORRS AGRICULTURAL EXPERIMENT STATION. 
Bouillon.—A flocculent sediment, a membranous pellicle and a slight tur- 
bidity. 
Milk.—Becomes alkaline, but shows no other change. 
Potato.—Luxuriant, thick, contoured, flesh color or pink. 
Grows well at 20°; slightly at 37°. Aerobic. 
This was found by Harding in a specimen of green butter. 
Bact. lactis aureum I, An orange, non-acid Bacterium, Perhaps B. lac- 
tericus of Adametz. 
Alorphology.—Rods which do not form chains. Size, .74¥-.g@x IM¢-34. No 
spores are produced, a capsule is evident and Gram stain is positive. 
Gelatine colony.—Round, flat, contoured, lobed, orange to yellow color. 
Litmus gelatine colonies are of a red-brown color. ‘ 
Gelatine stab.—A needle growth and a thin, reddish surface growth. 
Agar streak,—\uxuriant, deep orange-brown color, tough and tenacious, 
sometimes dull, and aggregated in colonies. 
Fermentation tubes.—No acidity, gas, nor closed arm growth in any sugar 
bouillon. 
Bouillon.—A turbidity, sediment, and a pellicle. 
Milk.—No action except a slight orange color at the surface. 
Potato.—Growth scanty or absent; when present, of an orange color. 
Grows better at 20” degrees than at 37°. Aerobic. 
Found in Middletown and in New York city. 
Bact. lactis citreum If. n.s. A yellow, non-acid Bacterium. 
Morphology. A rod occasionally forming chains. Size, BUH." X v7UHT Ape 
No spores nor capsules, and Gram stain negative. 
Gelatine colony.—A round, opaque bead, 1.5 mm. in diameter; usually white 
and later turning yellow. 
Gelatine stab.—A scanty needle growth and an irregular, dry, white surface. 
Agar streak.—Luxuriant, at first white, but soon lemon-yellow. 
Fermentation tubes.—No acidity, gas, nor closed arm growth in any sugar 
bouillon. 
Bouillon.—Turbidity, sediment, and a flaky scum. 
Milk.—No action. 
Potato.—Luxuriant, yellow, thick, sometimes wrinkled. 
Grows both at 20° and 37°. Aerobic. 
Variety A.—This has a small lemon-yellow colony on gelatine which is 
lemon-yellow even when viewed under the microscope. It has also a lemon- 
yellow surface growth on the gelatine stab and a lemon-yellow growth on 
potato. . 
Variety B.—Produces a yellow pigment, but not lemon-yellow, both in 
gelatine colony and on potato. It is slightly viscous on agar, and has no pel- 
licle on bouillon. Potato is slightly discolored, and one culture failed to grow 
on potato. All from milk. 
