296 



Index. 



Ovule, 97. 



Oxygen, essential to germination, 

 26 ; necessary to life of roots, 

 66 ; source of, in plants, 44. 



Oyster-slnell bark-louse, 168. 



Packing plants for transporta- 

 tion, 240. 



Pales, 100. 



Palets, 100. 



Palisade cells, 49. 



Parasites, animal, 160 ; defined, 

 21 ; flowering or phanerogamic, 

 179 ; fungous, 180 : injurious, 

 159 ; vegetable, 179. 



Parenchyma, 51. 



Paris green, 164. 



Pear, blight of, 181, 267. 



Peeling the stems of trees, 57, 

 266. 



Perfect flowers, 102. 



Persian insect powder, 166. 



Petals, 96. 



Phosphorous, 157 ; part played 

 by, in plants, 45. 



Picturesqueness, pruning for, 259. 



Pinching deflned, 253 ; stimulates 

 branching, 82 ; to promote 

 flowering, 264. 



Pistil, 97. 



Pith, 52. 



Plant food, elements in, 44 ; ele- 

 ments of, likely to be deficient, 

 45 ; from soil must be dissolved 

 by soil water, 44 ; in soil, re- 

 duced by crop growing, 153 ; 

 sources of, 43. 



Plant improvement, hovr ex- 

 plained, 271. 



Planting, too close, causes defi- 

 cient light, 148 ; trees, direc- 

 tions for, 248, 246 ; with ref- 

 erence to chance crossings, 

 280 ; with reference to polli- 

 nation, 103. 



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, 116. 



Plant manipulation. 190; propa- 

 gation, 190. 



Plant, directions for lifting the, 

 238 ; removing the, 240. 



Plant tissues, brittleness of, 60 ; 

 killed by drying, 144 ; tough- 

 ness of, caused by drought, 143. 



Plants, abnormal development of, 

 due to insufficient light, 147 ; 

 affected by unfavorable envi- 

 ronment, 118 ; difference in 

 water requirements of, 139 ; 



Plants — 



distance apart for growing, 83 ; 

 domestic, deflned, 11 ; have im- 

 proved under culture, 271 ; 

 heeling-in, 242 ; injured by ex- 

 cessive water, 139 ; affected by 

 parasites, 159 ; only can pre- 

 pare food from mineral sub- 

 stances, 43 ; packing for trans- 

 portation, 240 ; potted, require 

 drainage, 70 ; potting and shift- 

 ing, 248 ; power of, to endure 

 cold, 122 ; preparation of, for 

 replanting, 248 ; rapid-growing, 

 require much water, 138 ; shad- 

 ing after transplanting. 146 ; 

 those who improve, are true 

 benefactors, 280. 



Plants under glass liable to suffer 

 from deficient light, 148 ; need 

 of rest of, 113 ; not to be 

 sprinkled in bright sunshine, 

 119 ; plants, unpacking, 242 ; 

 variability of, 272 ; washing 

 the roots of puddled, 243 ; 

 watering of potted, 70, 138 ; 

 watering the roots of recently 

 transplanted, 251 ; screens for 

 shading, 145, 146. 



Plum, black knot of, 181, 267. 



I'lum, curculio, 177, 178. 



Plumule, 41. 



Poisons, destroying insects by, 

 1S3. 



Pollen, 97 ; appearance of mature, 

 277 ; applying, 278 ; to prevent 

 access of undesired, 277. 



Pole shears, 269. 



Pollination, 101 ; in many plants 

 dependent on wind, 151 ; plant- 

 ing with reference to, 103 ; to 

 prevent self, 277 ; when should 

 it be performed, 278. 



Potash, caustic. 168. 



Potassium, 157 ; assists in food 

 preparation, 45 ; -sulfid solu- 

 tion, 185. 



Potato beetle, 163, 165 ; blight 

 of, 185 ; foliage of, Injured by 

 sun heat, 121. 



Potato plant, illustrated, 79. 



Potatoes, knobby, 141. 



Potted plants require drainage, 

 70 ; watering of, 70, 188, 139. 



Potting and shifting, 248 ; soil, 

 249. 



Powdery mildews, 186. 



Preparation of plants for replant- 

 ing, 243. 



Prepared food, current of, 62. 



Pricking off seedlings, 76. 



Principle of selection, 17, 271. 



Propagating bed, the, 208. 



