Bir7ni7igham Botanical HortiatUural Garden. 413 



these holes, and their branches trained on the outside ; thus covering 

 the wall, so as to render it both ornamental and useful. These pits 

 may be used for any or all of the purposes for which hot-houses are 

 erected ; because, the soil being perfectly dry, thej' may be made of any 

 depth. We propose using them in four divisions : one for hot-house 

 plants in pots ; one for green-house plants in pots ; one for a collection 

 of pine-apples ; and one for forcing fruits and culinary vegetables in 

 pots, such as cherries, peaches, strawberries, figs, vines, kidneybeans, 

 &c. In summer, when the green-house plants are placed out of doors, 

 their place may be supplied by melons, and melons may also occupy the 

 forcing department. To save labour, however, in the case of the green- 

 house plants, the sashes may be removed, and the plants exposed to the 

 weather as they stand in the pit. 



d d. Hot-house and green-house, proposed to be first erected. The back 

 wall may be of bricks, set in clay instead of lime mortar ; in order that 

 it may be easily taken down, and the bricks readily cleaned. It may be 

 whitewashed inside, and covered with a trellis for creeping plants, &c. 

 It is intended that the outer circle of hot-houses, as far inwards as this 

 wall, shall be completed, before any part of the inner circle is com- 

 menced ; still the whole will be complete, as far as it goes. 



e e. Area, in which the green-house plants in pots may be placed during 



the summer season. 

 f ff. Semicircular basins, with jets in the centre, all on one level. 



g. Circular basin, with a jet in the centre, on a level platform, 23 ft. lower 

 than the level of the terrace walk, b. The fountain (v) is 15 ft. lower 

 than/; and av is 20 ft. lower than v. The latter has a jet in the centre, 

 which, when played from a pipe, communicates with the cistern x, and 

 will raise the water to a maximum of height, according to the diameter 

 of this jet. 



h. Commencement of the main walk, having the arboretum and collection 

 of herbaceous plants on the left hand, and the pleasure-ground on the 

 right. On the walk (in this plan) are indicated in figures, the different or- 

 ders which contain hardy herbaceous plants, and the spaces which it is 

 calculated they will respectively occupy, when planted in groups limited 

 to one genus in a group, in the manner to be hereafter described. The 

 course in which this walk ought to be followed by the botanist, in order 

 to take the different orders and tribes in their proper succession, is 

 indicated by the direction of the arrows ( a > > ). Whoever wishes to 

 examine the whole of the plants and trees composing the botanical 

 collection, in the order in which they are given in Part II. of our Hortiis 

 Britannicus, must not cross the straight north and south walk, except 

 at i, in the bottom of the garden. 



k. Termination of the natural arrangement. 



/, Vase, indicating the commencement of a grass walk, or rather glade, 

 through the arboretum, which, it will be observed, passes through and 

 around the garden, till it regains the terrace walk at m. Along these 

 dotted lines are marked the numbers of the natural orders, as given in 

 the Hortus Britannicus, which contain hardy trees and shrubs, with the 

 spaces they will occupy when planted according to a certain rule, which 

 will be hereafter given. 



7j, Statue, or sculptural ornament, or sundial. 



o, Rosary, with a covered seat in the centre. 



p. Small circular groups, for tender annuals and tender plants in the sum- 

 mer season. 



g. Groups of choice hardy perennial and annual plants, with roses and 

 other shrubs, and some trees, 



r, jj. The extreme points of hedges of box placed for the purpose of sepa- 



