The Shoulders or Sides, of Men and other Animals, will have the greatest differeuce in their height, when the whole Body is found in the most leisurely Motion; and on the contrary, these parts of the Animal will come nearest to an equality in height, when the Motion of the whole Body is the quickest: This has been already proved in my Treatise of Local Motion, upon this principle; that every heavy Body gravitates in the Line of its Motion; so that if any Whole be moving towards any place, the part which is join'd to it, follows the shortest Line of the Motion of its whole; without throwing its Weight on the Lateral parts of the same Whole.