Between a Man and a Child, is found a very considerable difference in the length from one Joncture to another; for a Man, from the Joncture of his Shoulders to his Elbow, and between the Elbow and the tip of the Thumb, and from the Extremity of one Shoulder, to that of the other, has the Measure of two Heads; whereas the Measure of a Child in these parts is but one. The Reason appears to be this, that Nature in the first place, employs her self about the Head, as being the principal Part, and the seat of the Understanding; setting aside the other less considerable Parts of her Fabrick, till she has formed the Capital.