INDEX. 
Physolobium, distinction of the genus from Ken- 
nedya, 142 
Piraelea spectabilis, 70, 140 
Pinus, situation in which the species succeed 
best, 37 
Plants, elements of, 55; their influence on ani- 
mal life, 106 ; nourished chiefly through the 
atmosphere, 129 
Polystachya reflexa, 142 
Portugal Laurels, method of preparing standard, 
58 
Portulaca Thellusonii, 29; its cultivation in the 
open ground, the greenhouse, and the stove, 
30 
Posoqueria versicolor, 117 
Potassa, the grand agent in vegetable nutrition, 
154 
Potentilla insignis, 164 
Pots for early Crocuses and Bulbs, 17 
Potting, the habits of plants to regulate the 
manner of, 49 ; time for a general, 47, 71 
Precocious developments, necessity for checking, 
191, 239 
Prepusa Hookeriana, 261 
Primula sinensis, var. plena, 273 
Propagation, fittest period for, 48 
Protection, mode of applying it to borders con- 
taining exotics, 15; for tender shrubs, 63, 
240 ; injurious to half-hardy shrubs when 
continued too long or too constantly, 64 
Pruning shrubs, general directions for, 264 
Puya heterophylla, 2 1 
R. 
Rain water contains ammonia, 178 ; hence its 
superior fitness for watering plants, 179 
Receptacles, for Orchidaceee, 113 ; for early 
flowering Bulbs, 17 
Rhododendron Gibsonii, 217 ; system of culti- 
vating, 2 i 8 
Rhododendrons, prefer a sheltered and somewhat 
shaded spot, 39 ; plan of preparing standard, 
58 
Ridge and furrow roofs for plant-houses, argu- 
ments in support of, 256 
Rockeries, hints on forming and placing, 135 ; 
objectionable positions for, 138 
Roof for a plant structure, the form of, most 
adapted to particular kinds, 257 
Rosa Devoniensis, 169 ; hints for managing, 170 
Rose Bay, Mr. Gibson's, 217 
Rose, Devonshire, 169 
Roses, remarks on forcing, 208 ; best time for 
pruning tender, 48 ; season for layering, 216, 
264 ; suggestions for budding so as to form 
standards of various heights, 168 
S. 
Saccolabium, new species of, 22 
Salts or alkalies, the best manures, 154 
Salvia confertiflora, var. 236 
— hians, 164 
— regia, 69 
Salvia tubifera, 188 
Schizanthus Evansianus, 171; plan of cultivat- 
ing, 172 
School of Horticulture, hints for a great central, 
10 
Schweiggeria pauciflora, 164 
Science of gardening, 9, 33, 55, 81, 105, 129, 
153, 177, 201,223, 249 
Seedling plants in a smll state best for acclima- 
tizing, 62 
Seeds, on saving, 168; general season for sow- 
ing, 48 
Shallow soil necessary in acclimatation, 37, 62 
Shrubs, time for transplanting, 216, 263 
SobraUa sessilis, 69 
Soils, analyzation of, 33 
Solanum jasminoides, 5 ; treatment of, 6 
— macrantherum, 44 
Solar rays, different powers of the, 223 
Sophronitis grandiflora, 273 
Sowerbsea laxiflora, 44 
Span-roofed houses, best for growing plants to 
perfection in, 232 ; their details, 234 
Spirsea kamtchatica, var. himalensis, 21 
Sprekelia cybister, 117 
— glauca, 69 
Stachys coccinea, 101 ; its cultivation as a bor- 
der-flower, 102 
Standard Portugal Laurels and evergreen shrubs, 
fittest situation for, 60 
Stanhopea aurea, 23 
Stanhopeas, wire baskets best for, 114 
Stevia trachelioides, 69 
Stove aquariums, 111 
Stove plants, directions for potting, 47 
Strobilanthes scabra, 141 
— sessilis, 236 
Stylidium ciliatum, 164 
Succulent plants, hints on shifting, 48 
Symmetry desirable in plant structures, 231 
Syringing plants, utility of, 144 
T. 
Tabern^montana dichotoma, 236 
Tecoma grandiflora, different modes of cultivat- 
ing, 89 
Tender exotics, suitable borders for growing 
them in the open air, 11 ; those that will 
thrive in a sheltered border, 85 
Thunbergia, treatment of some of the species in 
the open ground during summer, 253 
Tithonia ovata, 237 
Tooth-tongue, magnificent, 49 
Trees, on planting them singly, 159 ; where de- 
tached specimens are objectionable, 160 ; and 
where appropriate, 161 ; localities in which 
groups should prevail, 160 ; period for shift- 
ing, 216, 263 
Trellises best adapted for supporting climbing 
plants, 65 
Triptilion spinosum, 93 
Tropseolum Moritzianum, 21, 199, 273 ; its cul- 
ture, 200 
Trumpet-flower, tendrilled, 245 
