File:The Horse - its treatment in health and disease, with a complete guide to breeding, training and management (1905) (14591767840).jpg

Identifier: horseitstreatmen09axej (find matches)
Title: The Horse : its treatment in health and disease, with a complete guide to breeding, training and management
Year: 1905 (1900s)
Authors: Axe, J. Wortley
Subjects: Horses
Publisher: London : Gresham
Contributing Library: Webster Family Library of Veterinary Medicine
Digitizing Sponsor: Tufts University

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il to see an excellent pattern for the mark-ing of many spotted and speckled creatures. Dr. Bonavia sums up his views of the nature of coloration of mammalsin a few short sentences. Glyptodonts, or other armoured mammals, he writes, were theoriginals from which all mammals are descended. The jaguar has re-tained the most primitive type of coloration clue to the characters of theancestral armour-plates—a sort of picturation of the carapace after it hadbeen got rid of entirely. 498 THE HORSES POSITION IN THE ANLMAL WORLD All other sijotted mammalia, whether marked longitudinally, trans-versely, or diagonally, are modifications of the jaguar. Stripes, whether longitudinal, transverse, or diagonal, are fusions oflines, of spots, or of rosettes; witness the spotting of certain cheetahs,of certain horses, and of certain tigers with twin stripes. In the self-coloured mammals. Dr. Bonavia contends, there is evidentlya total obliteration of all special markings, though they now and then turn
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Fig. 663.—GhjpiodiDi reticulatiis, restored fi- i, i 11 m.Lins exhibited in the Natural History Museum, South Koiisinpton up as atavic or ancestral marks, due perhaps to some atomic change orcrossing in the nerve-centres. Proceeding to the subject of coloration as it affects the hoise, the animalwhich is most immediately under consideration, it is at least very remaik-able to observe the curious mixture of colours in roan, piebald, skewbald,grey, and dappled horses—the last term indicating a peculiar patternirrespective of colour, as the dappling occurs in bay, brown, grey, and dun-coloured horses. It appears from the experience of breeders that dappled foals areunknown, the peculiar marking appears as the animal gets older; and itmust be admitted that in the figures in the accomjjanying plate (LXVIII) PLATE LXVIll

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