GENERAL INDEX. 



Peach-trees, mode of protecting by canvas coverings, 173 



Pears, uses of, and properties of a good one, 545 ; number of varieties of, and a 

 selection of dessert sorts, arranged in the order of their ripening and keeping, 

 546 ; a selection of kitchen sorts arranged in the order of their ripening and 

 keeping, 547 ; a selection of sorts for perry, and a selection of the best sorts for 

 small gardens, 548 ; mode of propagation, soil and situation best adapted for, and 

 method of pruning and training the trees, 549 ; select list of, for espaliers, 

 dwarfs, or thinned standards, 428 ; select list of for an orchard, 432 ; beneficial 

 effects of thinning the blossom-buds, 550 ; gathering and keeping the fruit, 

 551 



Peas, a selection of varieties, and their culture, 631 ; mode of protecting early crops, 

 633; meansofdestroyingverminby which theyareattacked, 634 ; modeof forcing, 521 

 Pennyroyal, culture of, 690 

 Peppermint, its use and culture, 693 

 Peruvian Cherry, culture of, 600 



Pine-apple, history of, and general particulars of its culture, 443 ; mode of cul- 

 ture at Oakhill Gardens, 444 ; construction of pits for the culture of, 445 — 448 ; 

 sizes of pots used at Oakhill Gardens, 448 ; their growth in beds of soil, 450 ; 

 to cause them to grow to a large size, 451 ; insects which sometimes infest the 

 plants, and modes of destroying them, 452 ; selection of best sorts, 600 ; sum- 

 mary of culture, 601 



Pine-stove described, 223 



Pine and Fir tribe, mode of grafting the, 294 



Piping, in what manner performed, 26 ? 



Pits, their construction and use, 220 ; their usefulness for plant structures, 224 

 Plant structures, modes of ventilating, and the necessity of it, 217 

 Plantations, object of thinning ornamental, 350 



Planting with the trowel, and in drills, 325 ; temporary mode of, 325 ; different 

 modes of, 326, 327 ; general rules for, 329. See Notes in p. 703 and 704 



Plants, food of, must be reduced into a pulpy mass before being absorbed by them, 3 ; 

 injured by being cut close to the ground in a young state, 3 ; leaves necessary to 

 the growth of, 4 ; require rest, 5 ; means by v^hich they are multiplied, 6 ; light 

 necessary to the growth of, 6 ; classification of, 8 ; the grand classes of the Natural 

 System explained, 9 ; number of genera, species, and varieties of, 10 ; distinguished 

 as evergreen, sub-evergreen, persistent-leaved, deciduous-leaved, ligneous, suffruti- 

 cose,17 ; nomenclature of, 19 ; structure of, 20 ; sexes of, 23 ; fruit of, 24 ; functions 

 of, 24 ; growthof described, 26 ; motion of sap in, 31 ; absorb and liberate gases, 33; 

 the vigour of seedlings depends on the age of the seed, 37 ; geographical distri- 

 bution of, 37; the important influence of temperature on the distribution of, 38 ; 

 the influence of light on the distribution of, 41 ; the influence of moisture on the 

 distribution of, 41 ; influence of soil on the distribution of, 43 ; stations of, 43 ; 

 habitations of, 45 ; exhalation from the leaves of, 81 ; diseases of, 123 ; props for 

 climbing, 163 ; wicker-work protector for, 171 ; garden labours with, 235 ; leaves 

 of; rooted in powdered charcoal, 269 ; watering, mulching, and staking newly- 

 planted, 328 ; object of growing them in pots, 330 ; drainage necessary to those 

 in pots, 332 ; care of newly-shifted, 333 ; management of hair-rooted kinds, 334; 

 modes resorted to for the annual resting of, 399 ; the advantages of resting of, 400 ; 

 packing and transporting, 402 ; the process of cross-breeding for raising new 

 varieties from seed, 406 ; precautions to be observed to prevent the promiscuous 

 fecundation of, 406 ; modes of perpetuating, 407 ; duration of, 408 



Plants and animals, analogy between, 2 



Plum, its use, and a selection of dessert sorts arranged in the order of their ripen- 

 ing, 558 ; selection of sorts for a small garden, and the general management of 

 the trees, 559 ; gathering, keeping, and packing the fruit, 560 ; select list of for 

 espaliers, dwarfs, or trained standards, 428 ; select list of for an orchard, 433 ; 

 a few remarks on forcing the, 487 



Pomegranate, culture of, 599 



Potato, selection of varieties, and their culture, 639 ; Lancashire practice of plant- 

 ing, 642 ; modes of obtaining young ones during the winter, 643 ; taking up and 

 preserving the crop, 645 ; particulars of the mode of forcing, 5 19. See Notes in p. 714 



Potting, its object and mode of performance, 330, 331 ; time and season for, 334 ; 

 importance of using rough turfy soil mixed with stones, &c, 616 and 706 



Propagation, principles of, 239 ; by seed, 240 ; by cuttings, 249 ; by joints and 



