NOT DESCRIBED IN SECTIONS V. AND VL 419 



HJEMATOCOCCUS sovis (Babes). 



Obtained by Babes (1889) from the blood and various organs of cattle 

 which had died of an epidemic malady (in Roumaiiia) characterized by heemo- 

 globinuria. The cocci are found in the blood in great numbers, for the most 

 part enclosed in the red corpuscles. 



Morphology. Biscuit-shaped cocci united in pairs; sometimes oblong in 

 form, isolated or united in groups ; the free cocci are surrounded by a pale- 

 yellowish, shining aureole of 0.5 to 1 ja in diameter. 



Stains best with Loffler's solution of methylene blue ; does not stain by 

 Gram's method. 



Biological Characters. An aerobic and facultative anaerobic, non- 

 liquefying micrococcus. Grows very slowly at the room temperature not 

 below 20 J C. In the incubating oven grows in the usual culture media. In 

 gelatin stab cultures a scanty development of small, white colonies occurs 

 along the line of puncture. Upon the surface of agar small, transparent 

 drops are developed along the impfstrich. Upon potato, at 37 C.. a thin, 

 broad, yellowish, shining layer is developed in the course of a few days 

 scarcely visible. Upon blood serum small, moist, transparent colonies are 

 developed. 



Pathogenesis. Pathogenic for rabbits and rats, which die in from six to 

 ten days after inoculation with a pure culture; the spleen is found to be en- 

 larged, the lungs hyperaemic, and a bloody serum is found in the cavity of 

 the abdomen; the cocci are present in the blood inconsiderable numbers, 

 but are rarely seen in the red corpuscles. Inoculations in oxen, horses, 

 goats, sheep, guinea-pigs, and birds were without effect. 



STREPTOCOCCUS PERNICIOSUS PSITTACORUM. 



Micrococcus of gray pirrot disease. Eberth and Wolff have described 

 an infectious disease of gray parrots, which is said to be extremely fatal 

 among the imported birds. The disease is characterized by the formation of 

 nodules upon the surface and in the interior of various organs, and especially 

 in the liver. Micrococci of medium size are found in these nodules and in 

 blood from the heart; these are sometimes in chains. Microscopic examina- 

 tion of stained sections shows that these cocci are directly related to the tis- 

 sue necrosis which characterizes the disease. But the micrococcus has not 

 been cultivated and its biological characters are undetermined. 



STREPTOCOCCUS AGALACTI^ CONTAGIOS^E. 



Obtained by Adametz (1894) from the milk of cows suffering from mas- 

 titis (Gelben Gait). According to Adametz all of the streptococci which 

 have been described by different investigators (Kitt, Nocard and Mollereau, 

 Guillebeau, and others) are probably varieties of a single species. 



Morphology. Spherical cocci in short chains \ p in diameter. 



Biological Characters. An aerobic and facultative anaerobic, non- 

 liquefying streptococcus. 



Upon gelatin plates forms flat, transparent, white or bluish-white, 

 slimy colonies, having a slight pearly lustre and an irregular outline. In 

 nutrient gelatin containing five per cent of milk sugar the colonies, at the 

 end of eight days, have a diameter of 0.85 to 1 millimetre; they are milk- 

 white and of a semi-fluid, slimy consistence. 



Upon agar plates the deep colonies are jmnctiform and white in color- 

 under a low power they are seen to have an irregular dentate contour and a 

 brownish color; the superficial colonies gradually assume the appearance 

 of transparent, flat drops having a diameter of 0.5 to 0.7 millimetre. In 

 sterilized milk fermentation occurs, at 37 D C., in from twenty to twenty-four 



