584 



INDEX. 



Carbonic acid, decompoaed furnishes an 

 essential part of the 

 Becretionsof plants, 545 



formation of, in seeds, 248 



its decomposition in plants 



during the day, 60 



its formation during the 



process of germination, 

 14 



its formation by plants 



during the night, 60 



its mode of introduction 



into the system of plants, 

 60 



■ periods at which plants 



cease to decompose it, 

 79 



probable effect of preserv- 

 ing seeds in an atmos- 

 phere of, 262 



Carburetted hydrogen gas, 168 



Celery, instance of a broken leaf emitting 

 roots, 24 



Cells of which plants consist, have their 

 own special power of secretion, 344 



Cellular matter formed by leaves, 276 



its junction, the cause 



of adhesion in the 

 stock and scion, 344 



surfaces must be brought in con- 



tact in grafting, 336 



system, 336 



horizontal system, 337 



tissue combined with woody 



fibre, 35 

 Centrifugal development of leaves, 55 

 Centripetal development of leaves, 55 

 Ceratonia siliqua, remarkable instance of 



vitality in, 261 

 Chara, singular motion in, 9 

 Charcoal, packing seeds in, 249 

 method of preparing it for gar- 

 dening purposes, 546 



— peat, 545 



■ powdered, its value when mixed 



with soil, 545 

 Chemical changes in seeds, 227 

 Cherries, forcing of, 149 



propagation of, by budding, 310 



Cherry-tree, instance of a Birch growing 

 out of the decayed trunk, 

 349 



pruning and training of, 389 



Chestnuts, beat mode of packing, 251 



propagation of, by budding, 



310 

 Chinese mode of dwarfing trees, 368 

 Chlorine employed to promote germina- 

 tion, 237 

 proportion of in rain-water, 28 



Chloroform, its effects on plants, 8 

 Circulation of sap, 40 



■ Hales's experiments 



on, 51 

 Cissus hydrophora, remarkable instance 



of vitality in, 261 

 Clay, burnt, as manure, 666 



its mode of action and gi'eat 



value, 567 



oolitic, successful mode of culti- 



vating a soil of, 640 



its properties, S25 



— r- Boil, has the power of absorbing or 



fixing ammonia, 548 

 Cleft grafting, 328, 330, 331 

 Climate of Ava, 610 



^ BrazU, 509 



Canaries, 609 



Cape of Good Hope^ 508 



Mexico, 507 



' Persia, 608 



W. Indies, 610 



Climates, extreme, 163 



imitation of, 163 



Climbers, 428 



Cold, effects of, on plants, 113, 140 



the manner in which it acts upon 



plants, 110 

 Collodion applied to cuttings, 294 



a remedy for bleeding, 364 



■ in budding is said to form an 



effectual ligature, 305 

 Colour, absence of, sometimes owing to 

 low temperature, 110 



green, in plants how produced, 



110 



of leaves influenced by light, 70 



yellow in plants, causes of its 



occurrence, 109 



Coloured light, effects of, on plants, 300 



its influence on germina- 

 tion, 238 



Colouring matter in the madder plant, 

 its production, 300 



Colours of plants, cause of their forma- 

 tion, 109 



Columella's assertion of grafting the olive 

 on the fig explained, 347 



Combretum purpxireum, mode of increas- 

 ing it, 450 



Composite flowers require to be kept dry 

 before they will ripen seed, 242 



Compost for American plants, 532 



for Dutch bulbs, 534 



Concrete applied to vine borders, 144 



Concreting,' its effects in raising the tem- 

 perature, 147 



Conduction, 161 



Conifers, instances of some being struck 

 from pieces of the root, 283 



