active 1866-1874 Robert Henderson, The Barb and the Bridle
“ Many authorities on riding tell us that a horse's jump is simply a higher stride of his gallop; from this notion I beg entirely to dissent. In leaping, a horse first raises his forehand upwards with a half rear, both feet quitting the ground at the same instant, the height he rises corresponding to the angle at which he takes off. Secondly, from his hind legs he propels himself forwards, both hind legs moving together, and, if he is a good jumper, well under him. If leaping, therefore, is to be compared to any other action of a horse, it must resemble a plunge gaining ground to the front. ”
