516 



INDEX. 



Canada East, fruits adapted to, 206-243 



" West, " " 206-243 



Capillary attraction, 69 



Carbon, 173 



" origin of in the soil, 175 



Cells, multiplication of, 167 



Cherry, soil for, 84 



" pruning of, 324 



" diseases of: 



I. Those affecting the foliage — 

 1. Insects: 



(1) The cherry-tree louse, 496 



(2) The May beetle, 497 



(3) The hag moth, 440 



(4) The dotted apple-leaf worm, 444 



II. Diseases affecting the fruit — 



1. The rose bug, 454 



III. Diseases affecting the stem — 



1. Wounds, 474 



2. Insects: 



(1) The borer, 490 



(2) The cylindrical borer, 498 



3. The Wart, 495 



4. Gumming, 491 



IV. Diseases of the tree generally — 



1. Profusion of sap, 462 



2. Decay, 468 

 8. Freezing, 469 



4. Dropsy, 473 



5. Sunstroke, 473 

 Chlorine, 180 

 Circles around trees, 145 

 Climate, island or coast, 27 



" inland or continental, 28 



" east of the Kocky Mountains, 30 



" west " " 30 



" influence of upon ofirspring, 384 



Coast or island climate, 27 



Cold, 38 



Colors of fruit, 36 



Continental climate, 28 



Connecticut, fruits adapted to, 206-243 



" best 6 varieties of apjilcs 



for 100 trees for, 248 



" best 12 varieties do., 248 



Connecticut, best 12 varieties of pears 

 on pear stock for 100 

 trees for, 248 



" bestten varieties of pears 



on quince stock for, 248 

 " best 6 varieties of peach- 



es for, 248 



Corolla, withering of after fecunda- 

 tion, 403 

 Cultivation, shallow for summer, 347 

 " summer, object of, . 347 

 " influeuceof upon produc- 

 tion of offspring, 386 

 Currant, soil for, 84 

 " training of, 283 

 " pruning of, 334 

 " diseases of: 



1. The fall of the leaf, 428 



2. The currant-bush borer, 501 



Degeneracy, resulting from age, 389 



Dehiscence of anthers, 407 



" hygrometrical, causes of, 407 



Delaware, fruits adapted to, 206-243 



Dew, 35 



Diluvial currents, deposits of, 58 



Disease, general observations upon, 420 



" manner of considering it, 420 



" classification of, by Berkeley, 421 



" " " VVeighmann,421 



" constitutional, 422 



" statement of causes of by J. 



De Jonghe, 422 



Disintegration, chemical causes of, 54 

 " mechanical causes of, 55 



District of Columbia, fruits adapted 



to 206-243 



Drains, direction of, 105 



" distance apart, 109 



" depth of, . 112 



Drainage, 90 



" what lands require it, 104 



" materials for, 115 



" manner of operation, 120 



" obstruction of, 121 



" benefits of, 121 



Embryo, formation of, 411 



Evaporation, 100 



" loss of heat by, 10 



Exposure, 26 



" the summit of hills, 44 



" varieties of pears for, 45 



