Horse and man : their mutual dependence and duties . SECTION OF FETLOCK. would be imperfect. Similarly, those who know theconstruction of the hoof are perfectly aware that allits parts, whether external or internal, are dependenton each other, and that an injury done to one willaffect all the others. I shall now endeavour to place before the readerthe interior of the hoof, and its connection with the THE NAVICULAR BONE. 41 horny covering that surrounds it, and the limb ofwhich it forms the extremity. The accompanying illustrations represent a longitu-dinal section of the lower portion of the h
Horse and man : their mutual dependence and duties . SECTION OF FETLOCK. would be imperfect. Similarly, those who know theconstruction of the hoof are perfectly aware that allits parts, whether external or internal, are dependenton each other, and that an injury done to one willaffect all the others. I shall now endeavour to place before the readerthe interior of the hoof, and its connection with the THE NAVICULAR BONE. 41 horny covering that surrounds it, and the limb ofwhich it forms the extremity. The accompanying illustrations represent a longitu-dinal section of the lower portion of the horses foot. Beginning as before with the bones, A is the lowerpart of the cannon bone, or metacarpal; B is theLong Pastern, c the Short Pastern, and D the CoffinBone. Another bone, shown at e, now comes before. FRONT VIEW OF COFFIN AND BACK VIEW OP COFFIN, NAVICULAR,NAVICULAR BONES. AND SHORT-PASThRN BONES. us. It is quite a little one, but is of the greatestimportance to the hoof. Its scientific name is theNavicular bone. The word is Latin, signifying alittle ship or boat, and is given to the bone becauseit somewhat resembles a birch-bark canoe in too-familiar navicular disease originates in thestructures surrounding this bone. Another name isthe shuttle-bone. As the section on page 40 does not give any idea 42 HORSE AND MAN. of the true shape of either the coffin or navicularbones, two views of each are here presented. What might be the origin of this bone was forsome time a matter of controversy. It was longthought to be a modification of one of the missingbones of the foot, but is now known to be a sesamoid bone. There are many of these bones,variously formed in different animals, the largestbeing the knee-cap, or patella. They are developedwithin the tendons, and derive their
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Keywords: ., bookauthorwoo, bookcentury1800, bookdecade1880, booksubjecthorses
