. Human physiology : designed for colleges and the higher classes in schools, and for general reading. ded irregular surfaces for the appara-tus of smelling, and for that of the taste, a place for the organsof hearing, and at its lower part, in connection with the lowerjaw, a mill for grinding the food. Then you observe the manybones of the thorax or chest, containing and protecting theheart and the lungs. The spinal column, k, composed oftwenty-four bones, you see as a firm but movable pillar, ex-tending the whole length of the body, and having its basefirmly planted upon that stout thick bon
. Human physiology : designed for colleges and the higher classes in schools, and for general reading. ded irregular surfaces for the appara-tus of smelling, and for that of the taste, a place for the organsof hearing, and at its lower part, in connection with the lowerjaw, a mill for grinding the food. Then you observe the manybones of the thorax or chest, containing and protecting theheart and the lungs. The spinal column, k, composed oftwenty-four bones, you see as a firm but movable pillar, ex-tending the whole length of the body, and having its basefirmly planted upon that stout thick bone, the sacrum, whichis wedged in so tightly like the key-stone of an arch, betweenthe broad spreading bones on either side. To this pillar arestrongly fastened the walls of the chest; and from the chestthus supported by the spine hang the lax front and lateralwalls of the abdomen. Then below you see the pelvis, as it iscalled,—a set of large bones so arranged in a bowl-form, as tooffer a broad surface of support to the contents of the abdomen. 15* 174 HUMAN PHYSIOLOGY. The bones of the SKELETON. THE 175 Bones of the cranium and the face. The bone called the ilium, m and I, on either side, with itsflaring upper surface, is especially serviceable in this pelvis also furnishes a socket for the round head of thethigh bone s, and points of attachment for the large musclesthat move the lower extremity. You observe the large bonesof the thigh and leg, intended to give firmness to the lowerextremity, and the lighter bones of the arm and forearm, fittedfor extent and quickness of motion. And finally, you noticethe numerous bones of which the hand and foot are made up,giving them with the intervening cartilaginous coatings, greatelasticity, and vast variety of motion, especially in the hand. 273. I will notice with some particularity some of thebones, of which I have given a general description, as they areunited together to form the whole skeleton. I can no
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