254 DESCRIPTION OF A CHEAP MOVEABLE HOT-WATER APPARATUS. 



and white flowering kinds will produce a very pleasing contrast. We 

 have seen a number of plants, but it appears not to be attacked by 

 the red spider, as are some of the other kinds. It is a very likely 

 plant to flourish well in a dwelling-room. 



ARTICLE II. 



DESCRIPTION OF A CHEAP MOVEABLE HOT-WATER APPA- 

 RATUS FOR HEATING A GREENHOUSE, &c. 



BY MB. JOSHUA MAJOR, LANDSCAPE AND ARCHITECTURAL GARDENER, 

 KNOSTHORPE, NEAR LEEDS. 



I perceive in the last number of the Cabinet a Correspondent asks, 

 " If some cheap moveable hot-water apparatus could not be contrived 

 for warming a small greenhouse, without setting boilers and forming 

 flues." If the following communication has not already appeared in 

 the Floricultural Cabinet respecting a portable hot-water appa- 

 ratus which I invented in the year 1833, probably its insertion in 

 your next may prove useful to your correspondent. 



The apparatus may be made of tin or copper ; the latter, though 

 of course it would cost more at first, would, owing to its durability, 

 in the end no doubt be the cheapest. Charcoal or small coke is em- 

 ployed for heating the apparatus ; oil-lamps have been tried instead 

 of it, but with not near so good an effect. As it is necessary to have 

 pipes to convey the effluvium (arising from the fuel) out of the place 

 required to be warmed, it will, in order to secure all the heat possible, 

 be of importance to introduce a sufficient length to allow the heat to 

 pass off, before the ends of the pipes are turned to the outside. In 

 order to make the smoke conductors suitable for any situation, it is 

 only necessary, in addition to the elbow pipes, to be provided with 

 several lengths of straight pipes, placing one elbow upon the perma- 

 nent smoke conductor connected with the fire, and the other at the 

 extremity or midway of the piping, as it may be required. The 

 largest sized apparatus could not well be more than eight feet long ; 

 as, if larger, it would be inconvenient to move about. The size of 

 the one which appears the most useful is as follows : — the whole 

 height of the centre portion of the apparatus, comprising the boiler, 

 &c, is 16 inches, and width 7 inches by 9 inches; the fire-pan 6i 



