Bovine culture, H Rav, from the Rockefeller Institute for Medical Researcjh. 
This culture was kindly sent me by Dr. Flexner, who states that it was isolated from the mesenteric gland of a cow. 
A lieavy suspension rubbed up in a small (piantity of mixed market milk. 
Stained smears showed numerous badlli in eac]i field and also numerous clumps of various sizes. 
Composition of the milk: Specific gravity, 1.03; fat, 1.8; total solids, 13.5; solids not fat, 8.7; ash, — ; acidity, 0.149; refractometer, 11.0; 
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