François Baucher,
New Method of Horsemanship
“ The spurring ought to be done, not violently, and with much movement of the legs, but with delicacy and management. The rider ought to close his legs so gradually, that before coming in actual contact with the horse's flanks, the spur will not be more than a hair's breadth off, if possible. The hand should ever be the echo to the light touches with which we commence; it should then be firmly held, so as to present an opposition equal to the force communicated by the spur. ”
