Take, next, this same line, starting from the outer angle of the eye, to the top of the ears, and extend it straight backward an inch and a half to an inch and three quarters, and you are on Combativeness. This organ starts about midway to the back part of the ears, and runs upward and backward toward the crown of the head. To ascertain its relative size, steady the head with one hand, say the left, and place the balls of your right fingers upon the point just specified letting your elbow be somewhat below the subject's head, which will bring your fingers directly ACROSS the organ. Its size may be ascertained partly from the general fullness of the head, and partly from its sharpness, according as the organ is more or less active; yet observers sometimes mistake this organ for the mastoid process directly behind the lower part of the ears. Remember our rule, namely: a line drawn from the outer angle of the eye to the top of the ear, and continued an inch and a half or three quarters straight back. Follow that rule, and you cannot mistake the position of this organ; and will soon, by comparing different heads, be able to arrive at those appearances when large or small. To find PHILOPROGENITIVENESS, extend this line straight back to the middle of the back head, and you are on the organ; and in proportion as the head projects backward behind the ears at this point, will Philoprogenitiveness be larger or smaller. About an inch, or a little less, directly BELOW this point, is the organ which controls MUSCULAR MOTION; and in proportion as this is more or less prominent, will the muscular system be more or less active. Those who have this prominence large, will be restless, always moving a hand or foot when sitting, and even when sleeping; will be light-footed, easy-motioned, fond of action, and willing to work, and possessed of a first-rate constitution. But when that prominence is weak, they will be found less fond of physical action and labor.