280 
INDEX,' 
Shrubbery borders, most appropriate time for 
digging, 24, 47 ; bone dust as a manure for 
them, 47 
Siliceous or flinty soils disperse water most 
rapidly, 10 
Sinningia Youngeana, 51 ; cultivation of, 52 
Soils, excellent mode of analyzing, 9, 58, 105, 
250 ; advantages of turning and exposing, 95 
Solanum uncinellum, 67 
Sollya heterophylla, partial hardihood of, 20 
Sollya linearis, 20 
Sollya salicifolia, probably identical with S. lin- 
earis, 20 
Spadix, definition of the word, 162 
Spiraea jap onica, 211 
— vaccinifolia, 68 
Spironema fragrans, 70 
Spongioles, character and office of, 112 
Sprekelia cybister ; var. brevis, 141 
Staking plants, extreme importance of, 120 ; 
proper method of effecting the operation, 120 
Stamens, not abortive leaves, 232 ; their position 
to be noted by the student of the Natural 
System, 232 ; difference between those termed 
perigynous, epigynous, and hypogynous, 232 
Stanhopea tigrina, variations in the flowers of, 190 
Stapelia, temperature necessary for the species 
of, 229 
Statistics of trees, attention invited to, 135 
Steam, cause of its great powerwhen confined, 83 
Stenomesson latifolium, 141 
Stevia breviaristata, 91 
Stigma, separation or entity of the, 233 
Stipules, their distinction from true leaves, 113 
Stove plants, propagation of, 72 ; their ordinary 
treatment, 24, 47, 71, 96, 120, 144, 168, 192, 
216, 239, 264, 274 
Strobilus, description of a, 162 
Stylidium saxifragoides, 262 
Succulent plants, 177, 205, 225, 251 
Syringas, erroneousness of the system of short- 
ening their shoots, 23 
Syringe, hints on its use, 60, 120, 144 
T. 
TACsoNiApinnatistipula, comparative hardihood 
of, 137 ; suggestion for grafting it on Passiflora 
ccerulea to render it more hardy, 173 
Temperature of plant-houses, directions for regu- 
lating the, 24, 72, 96, 120, 144, 168, 192, 240 
Terms, importance of precision in the use of 
botanical, 111, 161 ; some of the more ab- 
struse ones explained, 112, 161 
Testa, its nature stated, 259 
Thermometer, does not indicate the cold caused 
by winds, 81, 84 ; the human feelings a better 
guide in tempestuous weather, 84 
Thunbergia grandiflora, 221 ; mode of training 
and otherwise treating, 222 
Thysanotus proliferus, 29 ; culture and propa- 
gation of, 30 
Torpidity in plants, necessity for producing it 
in the autumn, 215 
Trachymene albida, 22 
Tradescantia iridescens, 141 
— tumida, 165 
Transplantation, points to be regarded in, 95 
Trees, best time for ascertaining the propriety 
of felling, 190 
Tropgeolum tuberosum, period for taking up the 
tubers of, 216 
Tuberous-rooted plants, necessity for removing 
them from the ground in autumn, 216 
U. 
Umbel, general nature of an, 162 
Umbilicus, character and office of the, 258 
V. 
Vanda tessellata, 265 ; appropriate system of 
managing, 266 
Vanda unicolor, 22 
Vegetable metamorphoses, the theory of, com- 
bated, 231 
Vegetation, its capacity for accommodating itself 
to circumstances, 178 ; importance to it of a 
period of rest, 226 ; effects of winds upon it, 
18 
Ventilation, directions for supplying it to 
stoves during summer, 120, 144 
Verbascum tauricum, 116 
Verbena amaena, 3 ; a fit subject for hybridiza- 
tion, 4 ; suitable for planting in beds, 4 
Verbenas, time and method for transplanting, 96 
Vervain, pleasing, 3 
W. 
"Watering plants, hints on, 47, 120, 215, 240, 
255 
Weather, usefulness of marking its peculiarities, 
81 
Winds, and their influence on vegetation, 81 
Winter treatment of plants, a test of the culti- 
vator's ability, 85 
Wistaria Cohsequana, 127 ; various plans for 
training, 127 ; suggestions on propagating 
and pruning, 128 
Z. 
Zichya tricolor, 71 
Zieria Isevigata, 94 
Zygopetalum africanum, 166 
LONDON : 
BRADBURY AND EVANS, PRINTERS, WI-IITEFRIARS. 
