280 
INDEX. 
Stephanotus floribundus, 142 
Stimulation, its value to tropical plants in the 
summer, 48 
Stylidium fasciculatum, 142 
Summer ornaments of the flower-garden, period 
for rearing the, 72 
Symmetry of parts, necessary to constitute 
beauty in plants, 66 
Syringing plants, great utility of in the summer, 
144 
Systematic arrangement of living .plants depre- 
cated, 82 
— ...X i 
Tecoma jasminoides, 199 ; best mode of flower- 
ing, 200 
Temperature of plant-houses, should be increased 
in the summer, 47 
Temperature of plants, 108 
Thunbergia alata suitable for planting on lawns, 
251 
Thunbergia auruntiaca, 215; culture of, 216 
— Hawtayneana, 147 ; treatment and 
propagation of, 148 
Thysanotus intricatus, 167 ; culture and pro- 
pagation of, 244 
Thysanotus proliferus, 142 
Torenia cordifolia ; 68 
Tourrettia lappa cea, 212 
Transplanting annual and hardy plants, time 
and mode of, 96 ; why it is useful, 133 
Trees and shrubs, remarks on arranging and 
planting, 81 ; manner in which they modify 
the temperature of any district, 205 
Trellises, arched, for covering small walks in 
the pleasure grounds, 160 ; form most suitable 
for supporting dwarf climbing plants, 161 
Trichinium alopecuroideum, 114 
Tropseolum tricolorum and brachyceras, re- 
marks on exposing and propagating, 250 
Tropseolum tuberosum, peregrinum, and penta- 
phyllum, partial hardihood and treatment of, 
251 
Tweedia ccerulea, 125 ; culture of, 126 
U. 
Uniformity in the treatment of exotic plants, 
desirableness of, 167, 255 
V. 
Valleys, those traversed by streams particularly 
cold, 183 
Vanda lamellata, 143 
Vegetable fluids compared with animal, 154 
Vegetable life dependent on heat, 85 
Vegetable organization to a great extent uniform, 
85 
Vegetable physiology, articles in elucidation of, 
9, 57, 153 ; facilities afforded by British plants 
for obtaining a knowledge of, 40 
Ventilation, general remarks on, 96, 143, 167, 
240, 263 
Verbenas, method of imparting a climbing habit 
to, 253 
Verticordia insignis, 258 
Vital principle in plants, suggestions as to its 
position, 153 
W. 
Walls, not most suitable for climbing plants, 
160 
Water, importance of mingling air with, before 
applying it to plants, 12 ; its tendency to 
lower the temperature of any atmosphere in 
which it exists, 183; equally dangerous to 
plants in winter as cold, if excessive, 263 
Watering plants, general principles to be observed 
in, 96, 144, 168 
Winds, reduction of temperature by, 205 ; pro- 
ductive of drought, and therefore, unless 
violent, generally beneficial to plants, 206 
Wistaria consequana, its suitability for training 
to a pole, 16 
Witsenia maura, 92 
Wood, its formation and constituent parts, 179; 
different hypotheses respecting its enlarge- 
ment, 179 
Y. 
Young gardeners, familiar hints to, 207 
Young plants, reason for their peculiar pervious- 
ness to cold, 87 
Z. 
Zichya tricolor, 211 
\ 
LONDON ! 
WRADBURY AND EVANS, PRINTEKS, WWTRKRIARtf. 
i 
