subsaltation

The motion of a horse may be compared to that of a Grasshopper in two respects. First, In respect of his swiftness. Secondly, Of his subsaltation, or bounding and leaping. I conceive God had respect only to the latter, in these words; for seeing this whole context doth not handle the nature of the horse in general, but only the marks or qualities of valiant horses; therefore the mention of this (namely, the subsaltation of horses) is much more proper than that of their swiftness or speed in running: