TIIE AMATEUR’S FLOWER GARDEN. 
49 
shelf b. The roof is a fixture, but ventilation is secured Vy 
three openings back and front, c, each 18 inches by 9 inches, 
over which slide boards in a groove. The boards are connected 
together by means of a stout wire, running from one to the 
other, with a handle at the end, so that all may be opened or 
shut at once by merely pulling or pushing the handle. The 
ends of this part may be either all brickwork, or the front 
wall returned ; and above that may be glass, according to the 
taste of the builder. The latter would be the best-looking 
plan, but would cost a trifle more than brickwork. Atmos¬ 
pheric heat is obtained from two four-inch hot-water pipes cl, 
the flow rising at cj, and the return descending to boiler at i, 
and flue formed with nine-inch drain-pipes. Wherever an 
elbow occurs in this kind of flue, it is well to use a few bricks, 
covering with a pavement, the removal of which at any time 
will enable a flue-brush to be got in for cleansing the flue. 
It is also to be remembered that a flue always acts best when 
the furnace is sunk considerably lower than the line the flue 
traverses, otherwise the air stagnates in it, and causes the 
smoke to rush out at the furnace-door. For the heating, a 
very small boiler will do. There will be 36 feet of four-inch 
pipe, two elbows, one syphon, and a supply-cistern, 9 inches 
square, for fixing at h, required for Fig. 1; also, two diminish¬ 
ing T-pieces, one stop-valve l, one two-inch syphon, and 18 
feet of two-inch pipe, for Fig. 2; a furnace-front and bars, 
and small soot-doors placed opposite the principal flues for 
convenience of cleaning from soot. 
For the building must be provided 4000 red bricks, 250 
white bricks for floors, 10 feet of coping-bricks, one chaldron, 
or 36 bushels, of lime, and three loads of sand, and 20 feet of 
9-inch drain-pipe for flue and chimney. 
Fifty-four feet of wall-plate, 4| inches by 3 inches, for the 
various roofs to rest upon ; arid if the ends of the pit, Fig. 
1, be only bricked up as high as the front-wall, and the rest 
part glass, about 14 feet more will be required; also, for the 
jambs and lentels for two doors, 34 feet of the same scantling, 
making about 102 feet. 
For the roof of Fig. 1, 180 feet of sash bars, at 8 inches 
apart, will be required ; and about 40 feet of 3 by 4J-inch 
scantling, to lay into the walls as bond-timber for the pitch 
of the roof and ventilators. About 32 feet of 1 by 9-inch 
board for shelves b , u , and ventilators, c, five iron brackets, 
4 
