. Diseases of the dog and their treatment. esespores possess great powers of resistance and are found in soil, particularlyin garden earth and rich meadows, and in the excrement of healthyhorses, dogs, cattle and other animals; this explains why animals areso, prone to develop the disease from wounds of the extremities, tail, etc. 310 DISEASES OF TRUE INFECTION \Micn these microbes invade a wound they midtiply with great rapidityand produce toxines which cause a strychnine-like convulsive contractionof the muscles. The virulence of the bacilli is in all probability influencedby the simultaneou
. Diseases of the dog and their treatment. esespores possess great powers of resistance and are found in soil, particularlyin garden earth and rich meadows, and in the excrement of healthyhorses, dogs, cattle and other animals; this explains why animals areso, prone to develop the disease from wounds of the extremities, tail, etc. 310 DISEASES OF TRUE INFECTION \Micn these microbes invade a wound they midtiply with great rapidityand produce toxines which cause a strychnine-like convulsive contractionof the muscles. The virulence of the bacilli is in all probability influencedby the simultaneous invasion of other germs. This very rarely occurs in the dog. The figure here presented () is the only one the writer has seen, and was taken twenty-fourhours l:)efore death; the muscles w^ere contracted to such an extentthat the animal could be lifted bodily by holding up one anterior may originate from a wound in any part of the body. No specialclass of wound can be said to be favorable to the production of Fig. 100.—Dog with tetanus. It may originate from a scratch or from a very large wound. Thetemporary trismus seen in young animals that have eaten decayed meatshould be classed under ptomaine poisoning, and not under anatomical examination is almost always negative; hypera^miaand congestion of the cord which is occasionally seen is of secondaryimportance as it seems to have no actual bearing on the true cause of thedisease. Symptoms.—The period of inctd)ation in a dog is not known posi-tively, as the cases are so rare, but probably it is about the same as ahorse—from five to twenty days—depending probably on the vir-ulence of the bacilli. The general symptoms are stiff stilty gait, the neckand head are extended, the expression is staring and anxious, the ears aredrawn forward and pointed, the membrana nictitans is draw^n over theeye, wrinkling of the skin of the f9rehead, retraction of the angle of the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdo, booksubjecthorses
