. Points of the horse; a treatise on the conformation, movements, breeds and evolution of the horse. Horses. —^*JaB=*'"*^ Fig. Fig. 21. Fig, 19, DiSPLACEMENr OF CENTRE OF GRWITY BY MAN WHEN WALKING. occur when leaping, except w hen the spring is made vertically upwards from a state of jest, in which case the centre of gravity is not displaced beyond the base of suppoit. Manner in which Propulsion is Effected by the Limbs,—The displacement of the centre of gravity, in the propulsion of the body, is accomplished by the straightening out of the limb or limbs, as the case may be. We can
. Points of the horse; a treatise on the conformation, movements, breeds and evolution of the horse. Horses. —^*JaB=*'"*^ Fig. Fig. 21. Fig, 19, DiSPLACEMENr OF CENTRE OF GRWITY BY MAN WHEN WALKING. occur when leaping, except w hen the spring is made vertically upwards from a state of jest, in which case the centre of gravity is not displaced beyond the base of suppoit. Manner in which Propulsion is Effected by the Limbs,—The displacement of the centre of gravity, in the propulsion of the body, is accomplished by the straightening out of the limb or limbs, as the case may be. We can readily see how this gives the required impetus, if we consider the manner in which the shove-off is done by an expert swimmer in a bath, w^hen he comes to the end of it, and wishes to touch, turn, and strike off without loss of time. He, as we all know, will, as much as possible, draw up the leg with which he is going to give the shove off, and having applied it to the side of the bath (Fig. 22), will suddenly straighten it out, with the result that his body will be shot forward (Fig. 23), Here the drawn- up leg, which acts as a spring, is placed between two objects: one (the body) movable, the other (the side of the bath) immovable. When the leg is extended, the movable object is naturally the one to be displaced. Indentically the same action occurs in the various progressive movements ot the horse. We may see it, also, in the run of the pedestrian, which is depicted in Figs. 24, 25 and 26; for the right leg, which is a good deal bent in Fig. 24, is nearly straight in Fig. 25, The straightening of the limb or limbs, in effecting the forward propulsion of the body, is even better shown in Figs. 27, 28, 29 and 30, which depict the standing leap. I may mention that the propulsion of the hind limb of the horse takes place through the hip joint and pelvis. The impetus from the fore leg at the various paces may be regaided as through the elbow jojnt and Please note th
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecthorses, bookyear1897
