INDEX 



507 



Birds, ciroiilation in, 217. 



digestive system of, 156. 



lieart of, 217, 218. 



respiration in, 349. 



skeleton of, 260. 

 Biuret test for proteid, 53. 

 Bladder, 367, 371. 

 Bleeding, 209. 

 Blind spot in eye, 465. 

 Blood, 159-179. 



absorption into, 134, 135. 



aerating of, 203, 327. 



arterial, 187, 188, 203. 



changes in lungs, 326. 



clotting of, 161. 



cold, 351. 



composition of, 201, 202. 



conditions affecting, 170. 



experimental study of, 161. 



extractives, 164. 



flow, 191, 194-196, 204. 



in other animals, 173. 



in veins, arteries, and capil- 

 laries, 187, ISS. 



loading of, with nutrients, 

 201, 202. 



loading of, with wastes, 202. 



plasma, 161. 



poisoning, 210, 365. 



properties of, 161. 



purifying, 203, 327. 



quantity and distribution, 

 171. 



relation to circulation, 159. 



relation to respiration, 326. 



structure, 160. 



systems, 191. 



temperature, 171. 



unloading of nutrients from, 

 202. 



unloading of wastes from, 203. 



venous, 203. 



warm, 351. 

 Blood corpuscles. 



red, 160, 165, 167, 238. 



white, 167. 



Blood plates, 165, 169. 

 Blood proteids, 164. 

 Blood vessels, 159. 



of the heart, 184. 



of the skin, 356. 



relation to alimentary canal, 

 130, 134. 



See Arteries, Veins, Capillaries. 

 Blowing, 331. 



Boards of Health, duties of, 502. 

 Body, parts of, 30. 

 Body cavity in earthworms, 150. 

 Body covering of lower animals, 



374-376. 

 Body framework, 221. 

 Boils, 208. 

 Bones, 221-243. 



composition of, 240. 



diseases of, 248-249. 



effects of age upon, 241. 



forms of, 236, 237. 



fractures of, 250. 



functions of, 222. 



regions of, 223. 



structure, 42, 43, 237-243. 

 Bone cells, 243. 

 Border cells, 113. 

 Botany, 10. 

 Bow legs, 249. 

 Bowel movements, 145. 

 Brain : 



development, 434. 



diseases, 424. 



external features of, 393. 



forebrain, 388. 



frog, 388. 



hindbrain, 388. 



human, 390. 



internal features of, 395. 



membranes, 390. 



midbrain, 388. 



structure, 392-397. 

 Breastbone, 223. 

 Breathing, 328. 



abdominal, 328. 



causes of, 322, 323. 



