Index. 



283 



Planting, too close, causes deficient 

 light, 143; trees, directions for, 

 281,285; with reference to chance 

 crossings, 268; with reference to 

 pollination, 101. 



Plantlet, inner structure of, 48; may 

 need help to burst seed-case, 34; 

 principal parts of, 41; vigor of, 

 proportionate to size of seed, 38; 

 visible in seed, 40. 



Plant life, round of, 22, 113. 



Plant manipulation, 181; propaga- 

 tion, 181. 



Plant, directions for lifting the, 227; 

 removing the, 229. 



Plant tissues, brittleness of, 59; 

 killed by drying, 140; toughness 

 of, caused by drought, 138. 



Plants, abnormal development of 

 due to insufficient light, 142; af- 

 fected by unfavorable environ- 

 ment, 115; difference in water re- 

 quirements of, 134; distance apart 

 for growing, 82; domestic, defined, 

 11; have improved under culture, 

 259; heeling-in, 231; injured by ex- 

 cessive water, 133; affected by par- 

 asites, 153; only can prepare food 

 from mineral substances, 43; pack- 

 ing for transportation, 229; potted, 

 require drainage, 69; potting and 

 shifting, 236; power of, to endure 

 cold, 119; preparation of, for re- 

 planting, 231; rapid-growing, re- 

 quire much water, 134; shading 

 after transplanting, 140; those who 

 improve, are true benefactors, 268. 



Plants under glass liable to suffer 

 from deficient light, 143; need of 

 rest of, 111: not to be sprinkled in 

 bright sunshine, 116; plants, un- 

 packing, 231; variability of, 260; 

 washing the roots of puddled, 231; 

 watering of potted, 69, 133, 134; 

 watering the roots of recently 

 transplanted, 240; screens for 

 shading, 140, 141, 



Plum, black knot of, 172, 254. 



Plum curculio, 166, 169. 



Plumule, 41. 



Poisons, destroying insects by, 157. 



Pollen, 95; appearance of mature, 

 265; applying, 266; to prevent ac- 

 cess of undesired, 265. 



Pole shears, 257. 



Pollination, 98; in many plants de- 

 pendent on wind, 145; planting 

 with reference to, 101; to prevent 

 self-, 264; when should it be per- 

 formed, 266. 



Potash, caustic, 161. 



Potassium, 151; assists in food 

 preparation, 45; -sulfid solution, 

 177. 



Potato, beetle, 157, 159; blight of, 176; 

 foliage of,injured by sun heat, 118. 



Potatoes, knobby, 136. 



Potted plants require drainage, 69; 

 watering of, 69, 133. 134. 



Potting, and shifting, 236; soil, 237. 



Powdery mildews, 178. 



Preparation of plants for replant- 

 ing, 231. 



Prepared food, current of, 61. 



Pricking off seedlings, 75. 



Principle of selection, 17, 259. 



Propagating bed, the, 199. 



Propagation by cuttings, 191; by de- 

 tached parts, 184; by division, 181, 

 183; by division of the crown, 188; 

 by grafting, 209; by layers, 186; 

 by parts intact, 181; by sections of 

 the plant, 188, 191; by seeds, 182; 

 by specialized buds,188;by stolons, 

 185; by suckers, 184; methods of, 

 181. 



Prosenchyma, 51. 



Protective pruning, 254. 



Protoplasm, active state of, 15; dor- 

 mant state of, 15; some properties 

 of, 15. 



Proximal defined, 79. 



Pruning, defined, 242; for density, 

 248; for flowers or fruit, 252; for 

 growth, 251; for picturesqueness, 

 247; for slenderness, 247; forstock- 

 iness, 247; for strength, 248; for 

 symmetry, 245; formative, 245; im- 

 plements, 255; insufficient, pre- 

 vents formation of fruit buds, 144; 

 -knife, 255; maturative,255; objects 

 of, 245; protective, 254; -saw, 256; 



