20 THK AMATEUE's GEEENnOUSE 



iiig fifty feet of four-ineli pipe ; it is encased in a wrougbt- 

 iron jacket, which serves the purpose of a brick setting; the 

 iron jacket, with escape pipe (ii), renders it perfectly safe to 

 use this boiler inside the house, as it is impossible for the 

 fumes to affect the plants. The hot air escape pipe might 

 be carried round the house, and it would be an advantage if it 

 terminated in one of the chimnies of the dwelling-house. 



A correspondent of the ' Floral "World ' describes a gas- 

 heating apparatus which any skilled workman could manufac- 

 ture at a very small cost. He says : 



" The size of my house is twelve feet by nine feet, and it 

 stands about thirty yards distant from the cellar, in which the 

 gas-meter is fixed. I have a three-quarter-inch iron pipe run- 

 ning from the meter close to the front of the house. I thought 

 it best to have rather a large size pipe to conduct the gas, as 

 the water will sometimes condense in pipes in the winter time ; 

 and, of course, if the pipes are of small size, there is more 

 danger of the gas going out. I have a small sheet-iron box, 

 about fifteen inches square, which is fixed inside the house, 

 close to where the gaspipe comes, and proceeding from the top 

 of the box is some two-inch stove piping, to carry away the 

 fumes of the gas through the roof into the open air. The box is 

 made so that there can be no escape of the fumes into the house. 

 Inside of the box there is a small saddle-shaped copper boiler, 

 which holds just five pints, and, proceeding from the top of 

 the boiler, and through the top of the box or cover, is a piece 

 of one-inch lead pipe, which is carried straight for about 

 two feet, and then bent down and attached to a one-inch iron 

 pipe which runs round tlie house, and which returns again 

 through the box into the boiler at the bottom. Under the 

 boiler is fixed a small Bunsen burner gas stove (which any 

 gasfitter will supply). To prevent the fumes of the gas get- 

 ting into the house, I have a small door in front of the iron 

 box, so that I can light it from the outside. The cistern is 

 fixed just at the bend of the flow-pipe, the furthest point from 

 the boiler, with a tap to turn the water on or off", although I 

 always leave it on ; and at the same point I have a bit of thin 

 composition piping fixed in the iron pipe, and carried out into 

 the open air as a kind of safety-valve. A small tap, which is 

 fixed in the pipe at the highest point just over the boiler, 

 must be turned on before the gas is lit, to allow the air to 

 escape out of the pipes, or the w^ater will not circulate. I 



