The principles and practice of veterinary medicine / by William Williams.

  • William Williams
Date:
1909
Catalogue details

Licence: In copyright

Credit: The principles and practice of veterinary medicine / by William Williams. Source: Wellcome Collection.

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    There are also certain forms of lameness which conformation and size have much to do with. Calcification of the lateral cartilages is rarely witnessed in the better bred, but is very common in the cart-horse. Navicular disease, so rife amongst better bred horses, is a very rare cause of lameness in the cart- horse ; and, not to adduce too many examples, high-bred, nervous animals are more liable to nervous diseases than those of a lower breed. The effects of colour in predisposing to disease are very curious, as shown in the frequency of melanotic neoplasms in grey or white horses; and the liability to cutaneous eruptions upon the white parts of the body only, has caused one disease to be called “white face and foot disease.”—(Crusta labialis, see Veterinary Surgery.) It is also well known that pure white dogs and cats often are either born deaf or become so at an early period. There is also a uterine affection which is said to occur only in white heifers, but this is open to doubt. Further, there is a prejudice against horses which are known as “washy” chestnuts, as they are regarded as generally un- thrifty and liable to lung and stomach disorders. The action of the sun in the tropics is particularly noticeable on white-nosed horses. The white muzzle becomes sunburnt and painful, while the remainder of the animal’s body is unaffected. Tribe or species.—The influence of species in favouring or resisting certain forms of disease is really remarkable. Thus the horse, whilst liable to glanders, resists diseases to which cattle and sheep are peculiarly liable, such as rinderpest, pleuro- pneumonia, eczema epizootica. Eabies, again, is primarily a purely canine disease. Charbonous disease is transmissible to man and to all the domesticated animals, with the exception of the domestic fowls and birds generally ; but here it has been found—and probably this discovery explains why some contagia affect certain animals only—that resistance to charbonous con- tagion is due, not to conformation, but to temperature ; for when the temperature of the fowl has been lowered by removing its feathers and keeping it in water, it has become affected with the disease. Temperament, which consists in excess of or defect in some
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