INDEX 



483 



Seeds, catdicle of, 1,* 2,* 3.* 4.* 20,* 58.* 

 chaflf of, holds water, 29. 

 diastase in, 168, 1C9. 

 dispersal of, by animals, 323,* 324,* 325. 



— — — mechanical contrivances, 320, 



321.* 



water, 325. 



wind. 321, 322,* 323.* 



effect of extremes of temperature on, 352. 



embrj'o, 288, 312. 



embryo of. 1,* 2,* 3,* 4,* 20,* 56,* 58.* 



fat in, 165, 437. 



ferments in, 166-172. 



food conveyed to, 313, 314. 



— in, 65,* 164-180, 437. 



— transformed in, 314. 



force exerted by swelling of, 48, 49,* 50, 



51,* 52, 53,* 54* 

 germ of. See Seeds Embryo of. 

 germination of, 1-86. 



affected by air, 5,* 6. 



— alkali soils, 18. 



depth of planting, 38, 39,* 40,* 



41. 



drying, 47. 



heat, 5,* 6. 



light, 47. 



— — — — sea water, 18. 



water, 4, 6. 



on surface of soil, 69. 



quickness of, 46. 



getting above ground of, 71,* 72,* 73,* 74,* 

 75,* 76, 77,* 79.* 



— down into ground of, 80,* 81,* 82,* 83, 



84,* 85,* 86.* 

 heat set free by, 35. 36.* 

 hilum of, 1,* 2. 10. 

 immature, germination of, 43, 

 lipase in, 170. 

 micropyle of, 8,* 9. 

 micr*^ scopic structure of, 65,* 66, 67, 177, 



178. 

 needs of, 4. 

 oil in, 165, 437. 



osmotic action of, 17, 18, 60, 63, 64, 67. 

 path of water in, 22, 23,* 24. 

 penetration of soil by, 8C,* 81.* 

 pocket around caulicle of, 20,* 58.* 

 preservation of, 7, 28, 45, 46, 385. 



Seeds, proteid in, 437. 



pepsin in, 172. 



plumule of, 1,* 2,* 3.* 4,* 20,* 58,* 59.* 



proteids in, 105, 166. 



respiration of, 33 34,* 35, 36.* 



resting period of, 43, 44. 



restored by ferments, 44. 



ripening of, 314. 



starch in, 05,* 164, 437. 



structure of, 1,* 2,* 3,* 4.* 20,* 57,* 58,* 

 59,* 65,* 180.* 



struggle of, for existence, 312. 



sugar in, 164. 165. 



small, treatment of, 41, 42. 



testing of, 44, 45. 



tiansportation of, 282. 



trypsin in, 172. 



vitality of, 44. 



water in, 7,* 437. 



how obtained, 6-30 (7,* 8,* 9,* 15,* 



19,* 20,* 21,* 22,* 23,* 26,* 27*). 



wrinkling of, in water, 8.* 

 Seed-beds, screens for, 41.* 



soil for, 41. 

 Seed-case, 3,* 4,* 288.* 289,* 290, 360. 

 Seed-cover. 1,* 2,* 3,* 4,* 20, 21, 23,* 24. 



escape from, 48, 49,* 50, 51*-54,* 55 * 57,* 

 58,* .59.* 60,* 61,* 62,* 63.* 



function of. 47, 48. 



hinders absorption of air, 30,* 31, 32. 



heat. 42,* 43. 



water, 8,* 9*-15,* 16*-19,* 20. 21,* 



22,* 23*-25. 



holds water, 28, 29. 



openings in, 8,* 9*-15,* 16*-19,* 20, 21," 

 22 * 23*-25. 



osmosis through, 16,* 17,* 18, 19,* 20. 



place of rupture of, 54, 58. 

 Seed-leaves, 1,* 2,* 3.* 4,* 178, 179, 180.* 



contrasted with foliage-leaves, 180-186- 



function of, 163,* 164-179, 180.* 



number of, 226. 

 Seedlings. See Seed. 

 Selection, 331, 433-453. 

 Self-pollination, 301, 302. 

 Self-sterility, 309. 

 Senecio. See Ragweed. 

 Septic tank, 382. 

 Serum, 171. 



