HOTHOUSES. 85 



return pipe near the boiler. The water when cold should always 

 cover the bottom of the cistern i in., and as this disappears by 

 evaporation, fresh water should be added. A hundred feet of 4 in. 

 pipes contain 54'/ 3 gallons. 



Two ranges of hothouses are shown on Plate Q. The one is 

 at Peverey, near Shrewsbury ; the other, at Gisselfeld, Denmark. 

 On reference to the former, it will be noticed that there is a range 

 nearly 300 ft. long, consisting chiefly of lean-to houses placed 

 against the southern side of the north boundary wall of the kitchen 

 garden, with offices, etc,, at the back. Beginning at the west end 

 is a projecting span-roof stove, A, with central pit for stove plants, 

 and a stage all round, and hanging shelf from roof. Under the 

 stage are six rows of 4 in. pipes, and under the perforated slate 

 bed of central pit are two rows of 3 in. pipes next the wall. Then 

 follow three pits, B and C, for melons, cucumbers, peas, etc. The 

 heating is given by four rows of 4 in. pipes placed next the pit 

 wall next path, and bottom heat is provided by a flow and return pipe 

 under the pit. The roof of these pits is wired, and a shelf fixed 

 against the back wall. These pits are 9 ft. wide, and in front of them 

 are low frame pits heated by a flow and return 4 in. pipe. The 

 lights of these last named are movable. Then follows an early 

 peach house, G, 16 ft. wide, in which a trellis frame is arranged 

 parallel with the glass and stopping at the path, against which, and 

 the wired back wall, peach trees are planted. The heating consists 

 of two 4 in. pipes between the trellis frame and the outside 

 brickwork, with eight rows of pipes arranged in fours between the 

 trellis frame and the path. Next comes an early vinery, H, 16 ft. 

 wide, having a length of rafters of 18 ft., the heating being provided 

 by eight rows of 4 in. pipes arranged in fours. Then is reached the 

 span-roof plant house, J, forming the centre of the range. There 

 are stages next the wall, but the centre is clear for the storage 



