. La pathologie et le diagnostic différentiel des maladies infectieuses des animaux : préparé pour les étudiants et les praticiens de médecine vétérinaire . La médecine vétérinaire ; les maladies transmissibles chez les animaux. 234 le tétanos. Fig. 51. bacillus tetani. Etiolog&gt ;'. Le tétanos est causé par un mince Bacillus (B. tetani) 2 à 4(j, de longueur. Il forme des spores qui sont à la fin de l'organisme en lui donnant un peu l'apparence d'un axe. Sur ce compte il a été désigné le "bacillus pin." Il s'agit d'anaero- bic. Elle a été observée la première fois par Nicolaier en 1884. Carle et Rattone a montré que la maladie coul

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. The pathology and differential diagnosis of infectious diseases of animals : prepared for students and practitioners of veterinary medicine . Veterinary medicine; Communicable diseases in animals. 234 TETANUS. Fig. 51. bacillus tetani. Etiolog>'. Tetanus is caused by a slender bacillus (B. tetani) 2 to 4(j, in length. It forms spores which are at the end of the organism giving it somewhat the appearance of a pin. On this account it has been designated the "pin bacillus." It is anaero- bic. It was first observed by Nicolaier in 1884. Carle and Rattone showed that the disease could be transmitted from man to animals by inoculation with the pus from the local lesion. In 1889, Kitasato isolated the bacillus and studied it in pure culture. B. tetani stains readily with the aniline dyes, especially with carbol- fuchsin. It takes the Gram stain. It grows well in nutrient gelatin, agar or bouillon and on blood serum at the temperature of the body and in an atmosphere of hydrogen or in the absence of air as in deep agar cultures. The addition of a little grape sugar facilitates its growth. It has the distinction of producing the most powerful (poisonous) toxin of any known bacteria, 0.23 of a milligram being estimated as a fatal dose for a man of 175 pounds weight. In the infected animal the bacilli remain at the point of inoculation. Tetanus bacilli are found in the soil and in the larger intestine of horses and cattle. They have been found in hay dust, in the mortar of old masonry, in the dust in rooms, barracks and hospitals. It is reported that certain savages in Africa destroy their enemies by putting bits of broken glass mixed with certain soils in their shoes. The cause of death is tetanus. Mold rich in horse manure seems to be the most favorable abode for them. The tetanus bacillus is very resistant, especially in its spore form, to destructive agents such as drying and the ordinary disinfectants. Kitasato found that a 5 per cent, solution of carbolic

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• bookcentury1900
• bookdecade1910
• booksubjectveterin
• bookyear1916