160 STORRS AGRICULTURAL EXPERIMENT STATION. 
B. lactis olivaceus n. s. A greenish Peretrich. This organism has been 
found in milk directly from the udder. 
Morphology.—Size, 1.5u-24 x .4@. Asmall rod. No chains, no spores, no 
capsules. Gram stain negative. It has a tuft of flagella at one end. ~ 
Gelatine colony.—A round, convex, smooth, homogeneous, entire colony, of 
a reddish color below the surface. The surface colony has an irregular outline, 
and a reddish or a greenish color. 
Gelatine stab.—No liquefaction, but a needle and surface growth. 
Agar streak.—Luxuriant, filiform, raised, smooth, greenish in color. 
Fermentation tubes.—No acidity, gas, nor closed arm growth in any sugar 
bouillon. . 
Bouilion.—A sediment, an abundant turbidity, and a granular pellicle formed. 
Milk.—Rendered alkaline, becomes greenish, and develops a strong odor 
without curdling. 
Potato.—A luxuriant, filiform, flat, smooth growth, brownish-yellow. 
Grows both at 20° and 37°. Aerobic. 
B. lactis minutus n.s. -A yellow Lophotrich. This organism was isolated 
from milk directly from the udder. 
Morphology.—Size, 54x .4u. An extremely minute rod, which forms short 
chains. It produces no spores, no capsules, and does not accept the Gram 
stain. Several flagella at one end. 
Gelatine colony.—A round, convex, smooth, homogeneous colony, of a red 
color. On “tmus gelatine it is not acid. 
Gelatine stab.—A needle growth, but no surface growth. 
Agar streak.—Filiform, raised, smooth, translucent, yellow, moist, luxuriant. 
Fermentation tubes.—No acidity, nor closed arm growth in any sugar 
bouillon. 
Bouillon.—A sediment and turbidity, but no pellicle. 
Milk.—No actiom 
Potato.—Very scanty growth, yellowish. 
Grows at both 20° and 37°. Aerobic. 
B. lactis molocularis n.s. A white, non-liguefying Lophotrich. Found in 
New York city milk. 
Morphology.—Size, 1.4.x .7%. A lophotrichic rod with pasta at both ends, 
No spores, no capsules. Gram stain negative. 
Gelatine colony.—An opaque bead, smooth, entire, white. On Atmus gelatine 
an extremely diffused growth, made up of microscopic dots, appearing to the 
naked eye simply as a cloud extending over the plate. The individual colonies 
are visible only under the microscope. 
Gelatine stab.—A filiform ae growth and a flat surface, without liquefac- 
tion. 

