Auditory canal, 218 nerve, 222 Auricles of the heart, 109 B. Back-bone, 21 Bathing, 47 Importance of, 47 Time and manner of, 49 Baths, 48 Different kinds of, 48 Belladonna, 206 dilates the pupil, 206 Use as a cosmetic, 206 Bile, 95 Secretion of, in the liver, 95 Accumulation of, in the gall-bladder, 95 Uses of, 95 Biliary duct, 95 Bladder, Gall-, 95 Bleeding, how stopped, 121 Blind-spot, 207 Blood, 101 Arterial, 107-135 Change of color, 107 Circulation of, 107, 133 Coagulation of, 105 Composition of, 102 corpuscles, 102, 103 fluid, 105 Microscopic appearance of, 102 Respiratory changes in, 133 Uses of the, 105 Venous, 107, 135 Blood-vessels, 114, 118 Absorption by, 96 Injuries to the, 121 Body, renovation of the, 66 Bones, 15 Form and composition of, 16 Growth of, 22 Microscopic structure of, 17 Repair of, 23 Structure of, 17 Uses of, 15 Bowels, 94 Brain, 150 Anatomical structure of, 152 Function of the, 172 Injuries of the, 173 Membranes of the, 152 Reflex action of the, 174 {266} Bread, 72 Bronchial tubes, 125 Bronchitis, 128 C.