to he heated hy Hot Water, Smoke Flues, or both. 309 



head gardener. I do not mean to say that hot water is not a 

 better mode of heating than smoke flues, but merely that very 

 excellent crops have been, and still may be, raised by the latter 

 unfashionable mode of heating. I also think that, in many 

 cases, smoke flues may be more convenient, less expensive, and 

 more easily managed than the hot-water system. I consider 

 upright glass, whether in the front or ends, altogether unneces- 

 sary in forcing-houses, and that sufficient ventilation may be 

 given by moving the sashes of the roof; and these also allow of 

 access to the plants from the outside of the house when the 

 weather is suitable. The details I have given will, I hope, be 

 understood by the practical gardener, as well as by the architect 

 and builder. 



Cherry-house. Length 30 ft., width 16 ft.; height at back 

 12 ft., in front 5 ft. The trees may be planted in free soil, or 

 kept in pots ; in the latter case, they should be kept two years 

 in pots before being forced. If the trees are to be planted in 

 the soil, the front and end walls should be built on arches. A 

 flue should enter from a furnace from the back wall at one end, 

 and be conducted first along the front, and afterwards round 

 the back, with a chimney in the back wall over the fiu'nace. 

 The rise from the bars of the grate to the floor of the flue 

 should be 18 in., and the flue should be 3 ft. from the walls all 

 round. No front or end glass, but a roof of movable sashes 

 and rafters ; the sashes, in two lengths, to lap in the middle. 

 The top lights to be I in. wider than the lower ones ; and the 

 lower ones to run up and down in a groove formed in the rafter 

 under the top light, so that the top and bottom lights may run 

 free of each other. The door, or doors, in the end, or ends. 



Peach-house. Length 30 ft., width 12 ft.; height at back 

 9 ft., at front 2 ft. The front and end walls to be on arches. 

 The flue to be within 3 ft. of the front wall, and to be returned 

 close beside it, leaving a vacuity of 2^ in. between. A trellis to 

 be fixed to the rafters 15 in. from the glass, and the trees to be 

 planted between the front wall and the flue. The sashes as in 

 the cherry-house. The doors at each end, or one at the furnace 

 end. The rise from the furnace to the floor of the flue, and 

 the situation of the chimney-top, as in the cherry-house. 



Vinery. Length 30 ft., width 14 ft.; height at back 9 ft., at 

 front 2 ft. The end and front walls to be on arches, and the 

 whole to be heated by one fire. The furnace to have a door 

 1 ft. square, and the sides of the fuel-chamber to be of Welch 

 lumps; and the rise to the floor of the flue to be 18 in. as 

 before. The flue to run 2 ft. from the front wall, and to return 

 within 2 J in. of the back wall. The flue to be 18 in. deep, with 

 the covers and bottoms of 1-foot tiles. Doors at each end, or at 



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