278 



JOUBNAL OF HOBTICULTUKE AND COTTAGE GAKDENER. 



[ Oclobor 10, 1867. 



Argand burner, and an iron tube instead of glasa round the 

 burner. An iron chimney carried o£f all the noxious gases. 

 A modilication of this is the following : — 



This apparatus (fiij. 1), consists of a burner, 

 o — ft ring of brass tube — 5J inches in diameter, 

 pierced with fifteen small holes, placed 4 inches 

 above the level of the floor. Over the burner i 

 is what may be described as an inverted galvan- 

 ised iron trough, inches wide, 7 inches deep, 

 and 5 feet long, resting on four legs 4 inches 

 high. The burner is placed under one ex- 

 tremity of this trough ; from the other end runs 

 the chimney, which is of three-inch galvanised 

 iron piping, the joints of which are not ce- 

 mented. This rises .5 feet, and is then carried 

 across the house 12 feet, and finally makes its 

 exit in the kitchen chimney. It must either 

 be carried into a chimney, or, if this is not 

 possible, it should, after being carried across 



Fig. 1. 



the house, rise 5 or C feet perpendicularly. Placed on the top 

 of the trough over the burner isanevaporating-pan, h, contain- 

 ing about three gallons. 



This arrangement, if not ornamental, is cheap and useful, 

 and, with a little expense, may be made more elegant ; at any 

 rate, it is entirely removed dming the season when the more 

 attractive flowers of summer invite visitors. 



The house is a lean-to, 14 feet square, and 13 feet high at 

 the back. 



If hot water is employed to diffuse the heat, then the amateur 



has the following modes to select from. The laudations ol 

 each are the inventors', not ours. 



The greatest advantages the following mode {fi;is. 2 and 3), 

 offers are the facts that it requires no expensive brick fixing, 

 that it can easily be moved and adapted to another green- 

 house in case of removal ; it is clean, can be set in action in 

 a moment, and is easily regulated even by a ladj', and, where 

 there is gas, may be kept for any time at a comparatively 

 small cost, when the great expense and trouble of the old mode 

 is considered. There is no risk with gas of losing your plants 

 in consequence of the fires going out, and no time lost in at- 

 tending to them. 



Firi. 2 is a sectional view of an apparatus in a cellar, from 

 which the pipes are led to the greenhouse, a Is the boOer, 

 composed of two galvanised iron bowls, which may be bought 

 for l.-c. Gd. each, and which are soldered together an inch apart 

 by means of a circular ring of No. 11 zinc, is Is a flow-pipe, 

 with n, a small tube (an inch clear), running through a good 

 part of its length, and communicating as a chimney with the 

 hot-air chamber f. c, Pieturn-pipe, galvanised iron, 3 inches 

 in diameter, and connected to boiler, e. Ring-burner to be 

 bought for Is. 3d. H, Circular tube of sheet iron, same size 

 as outer edge of boiler, and made to take away. There must 

 be a small swing-door for lighting gas. i Are holes at bottom 

 for the admission of air. j, Stay from one pipe to another. 

 K, Union joints. These union joints can be in any part of the 

 retmn-pipe, but can only be beyond the chimney on the flow- 

 pipe. As a matter of course, the farther this inner tube 

 goes through the flow-pipe, the greater dfterwards is the faci- 

 lity for heating rapidly. For some time after heating there 

 can be no heat felt issuing from the tube g, proving that the 

 cold water is abstracting all the heat. When the water be- 

 comes heated then the warm air escapes ; but, by lowering the 

 burner, and a little attention at first to test its capacity, the 

 loss of heat can be brought very low. 



Fip. 3 is a section of the flow-pipe, showing how the inch- 

 tube is retained hy stays in its place within it. 



One advantage, and it is especially an advantage in a small 

 structure, arises from the whole of a gas-heating apparatus 

 being removable when no longer required. If there is a tap 

 close to the wall on the gas supply-pipe, and the pipe attached 

 to the gas-burner is connected with that tap by a galvanised 

 indian-rubber joint, then the tap may turn off the supply of 

 gas, and the stove, boiler, &c., be disconnected from it and re- 

 moved at any time. 



A correspondent stales that for several ye.irs he has used 

 indian-rubber tubing alone, for jointing both hot-water and 

 gas-pipes. After a severe test, it answers the purpose ad- 

 mirably. 



A piece of galvanised indian-rubber tube, of a somewhat 

 larger diameter than the pipes to be joined, is passed over the 

 end of each. The vulcanised tubing is then encircled with 

 stout string (S), at a distance of half an inch from the termi- 

 nation of either pipe, and tied up strongly and neatly. The 

 junction has the appearance represented injig. 4. TLough so 



Fig. 2. Rectinnnl view. 



Fig. 8. Inner tub*, kept in centre by Btajs. 



simple, this is a most effectual joint. Taps can be inserted in a 

 similar manner. 



The next {ti;/. 5), is in a greenhouse, span-roofed, with glass 

 on all sides, and which is small, being only 12 feet square. 



From the outtide is laid a wooden box, 10 inches by 5, open- 

 ing under the gas-burner. 



To prevent any smell at lighting there should be a continu- 

 ation of pipe beyond the burners, opening externally. Letting 

 the gas escape from this for a minute ensures the pipes being 

 full of gas, and, consequently, it is quickly lighted. This addi- 

 tion is important, as mixed air and gas might puff out in the 

 face, besides vitiating the atmosphere of the house. The 

 boiler, &c., are all of copper, except the chimney, which is gas- 

 pipe, and cost altogether about 70s. Three-quarter-inch pipe is 

 recommended, as after midnight the pressure is only small, 

 although quite sufficient. The apparatus is placed under a 



