. DISEASES OF POULTRY. 229 tissues of fowls is from to micro-millimeters long and 1 to micro-millimeters broad. It fre- quently appears in small clumps, but as a rule is in pairs united end to end. This germ is found in the blood and in various organs of the bod}'. Experimentally the disease has been produced by inoculating with pure cultures of the germs and by feeding pure cultures or the organs of affected fowls. The injection of cubic centimeter of a fresh â -> culture into the wing vein caused the dis- ease and death in ^^ .-' from three to thirteen '' ; days; usual
. DISEASES OF POULTRY. 229 tissues of fowls is from to micro-millimeters long and 1 to micro-millimeters broad. It fre- quently appears in small clumps, but as a rule is in pairs united end to end. This germ is found in the blood and in various organs of the bod}'. Experimentally the disease has been produced by inoculating with pure cultures of the germs and by feeding pure cultures or the organs of affected fowls. The injection of cubic centimeter of a fresh â -> culture into the wing vein caused the dis- ease and death in ^^ .-' from three to thirteen '' ; days; usually on the Fig-. ~o.âBactti-ium saiigiinuniiiiii from "tth Or SlXtU day. spleen of rabbit. Feeding cultures or viscera of affected birds was followed by death in from seven to fifteen days, but only about half of the birds fed contracted the disease. Pigeons, rabbits, guinea pigs and mice contract the disease if inoculated with to cubic centimeter of culture and die withiii three to six daj's. It appears probable from these investigations that the contagion in natural outbreaks is taken into the body with the food, but the disease is not readily propagated under sanitary conditions. Healthy fowls placed in cages with diseased ones did not in a single instance contract the disease. When cultures of the germs and diseased viscera were fed, only about one- half of the fowls became affected. Notv/ithstanding this, nearly all of one flock of about fifty fowls near
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpoultry, bookyear1899
