(23) ...the horse's asymmetrical tendencies and the half halt...
(23)...a. ...but even after this basic state has been obtained reins will not be able to act and take effect simultaneously. Due to resistances resulting from asymmetic tendencies in the horse's body, reins will not function concomittantly, but will take effect only individually...
(23)...b. ...in this situation regular lateral bending obtains the unilateral release and suppling of tight muscles. With proper orchestrations of seat, weight distribution, legs and hands of/in only one of his sides, the rider is able to effect the entire length of the horse's corresponding side. Doing so will permit him to activate, bring fore and burden the horse's hind legs individually...
(23)...c. ...now, this is what I call the half halt or demi-arret (...halber Arret...)...!
(23)...d. ...here you have an explanation for the pervasive effect of those shoulder-in type half-halts, which we discussed earlier... When with the help of these demi-arrets impulses pass on both sides of the horse's body alike, simultaneous tractions of both reins will begin to travel through the horse's body, on to the hind legs, without any hinderances and the rider will be able to evenly load and bend both hind legs simultaneously...
(23)...e. ...however, until these effects are fully established, and until the rider is able to halt the horse in an instant in perfect composure, time will pass. In the process the rider will have to school the horse to produce in response to a traction of both reins collection, the reduction of speed and changes to a lower gait...
(23)... f. ...meanwhile lessons to establish the full halt, will not consist of immediate and if need be forceful tractions of both reins... To the contrary the rider, if he encounters any unilateral resistences, will assist the horse with actions of but one rein. He will delay full halts on the haunches until he is able to hang on to both hind legs with his seat simultaneously and keep them directed towards the center of balance...
(23)... g. ...transitions to the rein back...