328 



INDEX 



Muscles Continued. 

 of eyes, 299. 

 of intestine, 93. 

 of stomach, 90. 

 of tongue, 82. 

 study of, 193-208. 



Nails, 232, *236. 



care of, 241. 

 Narcotics, 63. 

 Nasal bones, 171. 



" cavities, 296. 

 Near-sighted eyes, 306. 

 Neck of tooth, 80. 

 Nerve centers, 254, 262. 



cells, *259, 263, 277, (of child), 

 283, number of, 284. 



fibers, *259, 263-264. 



impulses, 264, 277. 



trunks, 254. 

 Nerves, 23, 256. 



of frog, 269-270. 



of hair, 237. 



of muscles, 199. 



of skin, 235. 



of stomach, heart, etc., 267. 



spinal, 260-266. 

 Nervous system, 253, 290. 

 Neural arch, 165. 



ring, *165. 

 Nitric acid, 44. 

 Nitrogen, amount in air, 24. 



in nitrogenous substances, 18. 



preparation, *13. 



properties, 15. 



use in air, 15. 

 Nitrogenous substances, see Pro- 



teids. 



Noises of insects, 320. 

 Nosebleed, 153. 



cavity, 211, 297. 

 Nucleus, 25. 

 Nutrients, 41. 



fuel value, of, 51-52. 



in various foods, *43. 



tests for, 44. 



uses of, 50-52. 

 Nutrition, in amoeba, 117. 



in man, 117. 



Occipital bones, 170. 

 convolutions, 280. 



Oil glands, 238. 



Olfactory lobes and nerves, of frog, 

 268. 



of man, 275, 289. 



comparison of, 290. 



region of nose, 297. 

 Optic lobes and nerves, of frog, 268. 



of man, 275, 279, 300. 



comparison of, 290. 

 Organism, 39. 

 Organs, 21, 39. 



of plants, 47. 

 Origin of muscle, 195. 

 Osmic acid, 44 n. 

 Osmosis, 101-103. 

 Oxid, of carbon, 7. 



of hydrogen, 7. 



of manganese, 11. 



of phosphorus, 5, 13, 14. 



of sulphur, 7. 

 Oxidation, 10. 



in body, 16, 17, 19, 29, 50, 51 



of alcohol, 66-68. 



of carbon, 7, 8. 



of fats in the body, 17. 



of phosphorus, 6. 



of sulphur, 7. 

 Oxygen, amount in air, 14. 



effect on blood, 121. 



in carbohydrates, 17. 



in proteids, 17. 



in starch manufacture, 48-49. 



preparation, *11. 



properties, 12. 



use in air, 13. 



use in body, 16, 17. 

 Oxygenated blood, 147. 



Pain, sensations of, 293. 

 Palate bones, 171. 



hard, 77. 



soft, 77. 



Pancreas, 21, 97-98. 

 Pancreatic juice, 97. 

 Papillae, of dermis, 235. 



of tongue, 82, 294. 

 Papillary muscles, 133. 

 Paramecium, 205. 

 Parietal bones, 170. 

 Parotid glands, 82. 

 Patella, 162. 



