XVI 
Journal of Agricultural Research voti.oct., 1913-Mar., 1914 
Citropsis, a New Tropical African Genus Allied to Citrus—Continued: page 
3. — Citropsis Preussii: Flowers after petals and stamens have fallen; 
leaves, one trifoliate and one having the terminal leaflet borne 
on a winged segment of the rachis. 424 
4. —Pistils of four species of Citropsis. A , Citropsis Preussii; B t Citrop¬ 
sis mirabilis; C> Citropsis Schweinfurthii; and D, Citropsis gabu - 
nensis . 425 
5. —Citropsis Schweinfurthii: Nearly mature fruit; A, side view, show¬ 
ing calyx and disk; B , section showing four cells with pulp 
vesicles and three seeds. 427 
6. — Citropsis Schweinfurthii: Cluster of flowers, showing stamens ar¬ 
ranged to form a staminal tube. 429 
7. — Citropsis Schweinfurthii: A trifoliate leaf from the type specimen, 
showing double spines in the axils and pronounced serrations 
of the leaflets toward the tips. 430 
The Origin of Some of the Streptococci Found in Milk: 
Fig. 1.— Cells of streptococci, showing variation in size and morphology.. 494 
2. —Types of cells of streptococci. 495 
3. -—Curve showing the typical rate of fermentation of dextrose and 
glycerin. 496 
4. —Frequency curves showing acid formation in dextrose broth. 502 
5. —Graphic representation of the characters of cultures of streptococci 
from milk and from bovine feces. 503 
6. —Graphic representation of the characters of cultures of streptococci 
from the mouths of cows and from infected udders. 504 
7. —Diagram showing the fermentation reactions of two types of udder 
cultures of streptococci. 506 
8. —Diagram showing a possible grouping of the milk cultures of strep¬ 
tococci . 507 
