BOU 



98 



B RE 



temperature, or if the average maximum < for insects ; it should not be allowed to 

 temperature of the air olily be known,! rise higher than six or eight inches, and 

 let the bottom heat be less by 10° than ; as much in breadth — if necessary to re- 

 the maximum temperature of the air. | strain its growth, transplant. The best 



Dr. Lindley very justly observes upon seasons for planting box are at mid- 

 this subject, that " we have doubtless summer, and early in the spring. Small 

 much to learn as to the proper manner rooted slips are employed, and are 

 of applying bottom heat to plants, and planted against the perpendicular side 

 as to the amount they will bear under ' of a small trench along the edge of the 

 particular circumstances. It is in par- border or bed they are desired to bound, 

 ticular probable, that in hot-houses The best month for clipping box is 

 plants will not bear the same quantity • June, and it should be done in showery 

 of bottom heat as they receive in na- j weather. 



ture, because we cannot give them the ' BllABEJUM s<eZ/a?«m. Green-house 

 same amount of light and atmospheric [ evergreen shrub. Ripe cuttings. Sandy 

 warmth ; and it is necessary that we j loam and peat. 



should ascertain experimentally whether \ BRACHYCOME '/6erzrf//"oZza. "Seeds 

 it is not a certain proportion between ' of this," says Dr. Lindley," should be 

 the heat of the air and earth that we sown in March in pots or shallow pans, 

 must secure, rather than any absolute ! filled with light rich soil, and well 

 amount of bottom heat. I drained, and the pots should be plunged 



"It may also be, indeed it no doubt is, , in a gentle hot-bed. As soon as the 

 requisite to apply a very high degree of< young plants are established, they must 

 heat to some kinds of plants at particu- j be kept in a green-house : shilt into 

 lar seasons, although a very much lower : larger pots as they require it. Those 

 amount is suitable afterwards ; a remark i that are to be grown out of doors should 

 that is chiefly applicable to the natives i be planted out in a prepared bed early, 

 of what are called extreme climates, ' say by the end of May, in order that 

 that is to say, where a very high sum- i they may perfect their seeds in Sep- 

 mer temperature is followed by a very , tember or early in October." — Gard. 

 low winter temperature ; such countries | Chron. 



are Persia, and many parts of the United 1 BllACHYL^NA nereifoUa. Green- 

 States, where the summers are exces- house evergreen shrub. Cuttings. Sandy 

 sively hot, and the winter's cold intense. ' peat. 



The seeming impossibility of imitating | BRACHYSEMA. Two species, 

 such conditions artificially, will proba- Green-house evergreen climbers. Lay- 

 bly account for many of the difficulties j ers, cuttings, or seeds. Sandy loam 

 we experience in bringing certain fruits, and peat. 



the Newtown pippin, the cherry, the \ BRACHYSTELMA. Two species, 

 grape, the peach, and the almond, to i Stove tuberous-rooted perennials. Cut- 

 the perfection they acquire in other : tings. Sandy loam. 

 counXnes.'->— Theory of Horticulture. \ BRASSAVOLA. Twelve species. 



BOURGEON, or Burgeon. See Bud. \ gtove epiphytes. Division. Wood. 



nrMTT^nt-nTA Two Species. Stove, r,DiccTA v\ ■ • Cf 



'^ - ' BRASSIA. Eleven species. Stove 



epiphytes. Division. Wood. 



BRASSICA. The cabbage tribe. See 



BOURRERIA 



evergreen trees. Cuttings. Sandv loam. 



BOUSSINGAULTIA baselloides.— 

 Half-hardy bulbous perennial. Seeds. 

 Common soil. 



BOUVARDIA. Five species. Green- 

 house or stove evergreen shrubs. Cut- 

 tings or division. Loam and peat. 



BOWER. See Arbor. 



BOX {Buxus sempervirens), is noticed 



Brocoli, Cauliflower , S,-c. 



BRAYA. Two species. B. alpina. 

 a hardy herbaceous perennial ; B.pilosa. 

 a hardy evergreen shrub. Seeds. Loamy 

 peat. 



BREAKING. A Tulip's flower is 



by the gardener chiefly as a plant suita- j broken when it has attained its perma- 

 ble for edgings. For this purpose it is [ nent colors. A bulbous root is said to 

 neat, and certainly the best article used. 1 ormA; when its foliage begins to be 

 In some gardens it is suffered to attain 1 thrust forth. 



too great bulk, and then becomes rather 

 a defect than ornament, exhausting the 

 soil, and presenting a safe lurking place 



BREMONTIERA ammoxylon. Stove 

 evergreen shrub. Cuttings. Sandy loam. 

 BRESIA. Three species. Stove 



