INDEX. 



521 



PAGE 



Peai-s, diseases of: 



IV. Diseases affecting the tree gen- 

 erally — 



1. Profusion of sap, 462 



2. Stagnation from transplanta- 



tion, 46i 



3. Vitiation of the sap, 476 



4. Canker, 465 



5. Decay, 468 



6. Freezing, 469 



7. Windsliakes, 472 



8. Dropsy, 473 



9. Sunstrokes, 473 



10. Wounds, 474 



11. Lichens, 475 

 Pennsylvania, fruits adapted to, 206-243 



" best 6 varieties of ap- 



ples for 100 trees, 254 

 « best 12 do. do., 254 



" best 20 do. do., 254 



" best varieties of apples 



for lOOO trees, 254 



" best 6 varieties of pears 



on pear stock, 255 



«' best 12 do. for 1000 



trees, 255 



" best 6 varieties of pears 



on quince stock, 255 

 " best 6 varieties of 



peaches for 100 trees, 255 

 *' best 12 do. for 1000 



trees, 255 



Percolation, 101 



Phosphorus, ISl 



Physical influences, 397 



Planting, distances for, 290 



Plum, soil for, 89 



" diseases of: 



I. Those affecting the leaf — 

 1. Insects: 



(1) The plum louse, 492 



(2) The vaporer moth, 437 



(3) The unicorn moth, 440 



II. Diseases affecting the fruit — 



1. Insects: 



(1 ) The curculio, 492 



(2) The rose bug, 454 



2. The fall of the fruit, 490 



3. Sterility, 444 

 JII. Diseases affecting the stem — 



1. The plum wart, 495 



2. Gumming, 491 



44* 



Plumj diseases of: 

 IV. Diseases affecting the tree gen- 

 erally — 



1. Profusion of sap, 462 



2. Vitiation of the sap, 476 



3. Freezing, 469 



4. Dropsy, 473 



5. Wounds, 474 

 Pollen, manner of conveyance of, 408 



" tubes, size of, 409 



Potash, carbonate of, 181 



" nitrate of, 182 



Potassium, chloride of, 181 



Preservation of fruit, 359 



Protection of half-hardy plants, 40 



Protococeus nivalis, 36 



Pruning, designs of, 302 



" importance of a sharp knife 



iu, 303 



" method of makingthecutin,.303 

 " severe, productive of vigor, 304 

 " formation of an equal sys- 

 tem of branches by, 306 

 " for the cure of disease, 307 

 " season of, 308 

 " winter, 308 

 " summer, 309 

 " after transplanting, 310 

 " the peach and nectarine, 311 

 " the apricot, 318 

 " the pear, 319 

 " the cherry, .324 

 " the vine, .326 

 " the vine, season of, 327 

 " the vine in the Ionian Island,327 

 " the currant, 334 

 " the gooseberry, 336 

 '• the raspberry, 337 

 " the black-cap raspberry, 337 

 " the blackberry, 338 

 " the strawberry, 339 

 " root, 341 

 Pulverization, 127 

 '• increase of capillary by,133 

 " effectofuiDon root-pas- 

 ture, 134, 142 

 " Tull's theory of, 136 

 " by insects, 137 

 " effects of, by Meclii, 138 

 " depth of, 141 

 " production of fi-esh soil 



by, 148 



" mixture of earths by, 149 



