. Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology). Bacteriology; Pathogenic bacteria. 4S6 SPECIFIC MICRO-ORGANISMS ated in inflamed intestinal wall. Brooks^ observed Bal. coli in several cases of dysentery in Orangoutangs in the New York Zoological Park and Brumpt^ has been able to transfer balan- tidium infection from monkey to swine and back to monkey. Still there is perhaps some question as to the identity of the para- sites found in man and in hogs. Balantidium Minutum.—Schaudinn in 1899 observed this orga
. Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology). Bacteriology; Pathogenic bacteria. 4S6 SPECIFIC MICRO-ORGANISMS ated in inflamed intestinal wall. Brooks^ observed Bal. coli in several cases of dysentery in Orangoutangs in the New York Zoological Park and Brumpt^ has been able to transfer balan- tidium infection from monkey to swine and back to monkey. Still there is perhaps some question as to the identity of the para- sites found in man and in hogs. Balantidium Minutum.—Schaudinn in 1899 observed this organism in the human feces. It is smaller then Bal. coli, the greatest measurements being 20 X 30/*, and the oral groove extends more than half way 'back along the side of the cell. It probably occurs rarely in the human small intestine. Other species of balantidium have been described. Sphaerophrya Pusilla.—This organism is of peculiar interest because it lives as a parasite within another protozoon, tljie Para- mecium. The cell of Sph. pusilla is spheri- cal, 20 to 40/i in diameter, and provided with sucking tentacles and cilia when outside the body of the host. 1 Proc. N. Y. Path. Soc, 1903, Vol. Ill, pp. 28-39. ' Compt. Rend. Soc'. Biol., igog. Vol. LXVII, pp. 103-. Fig. 221.—Spharo- phrya pusilla within a paramsecium. At one place there are four parasites and a fifth is escaping. Higher up, one of the parasites is just penetrating the host, and a single para- site is seen near the center of the paramae- oium. {From Do fie in after Biitschli.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original MacNeal, Ward J. , 1881-1946; Williams, Herbert Upham, 1866-. Philadelphia, P. Blakiston's Son & Co.
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