24 



HOT WATER APPARATUS. 



a boiler, as represented in the accompanying engraving, with a fire l^eneath 

 it, ^^ith a reservoir, by means of two iron pipes, the top one to carr}^ the 

 hot water to the reservoir, the other to carry the cokl w^ter back again 

 to the boiler. A great deal has been also said of the discoveries of the 



late Zvlr. Anthony Bacon, in regard to hot water, as ai)phed to hot houses, 

 We know, upon unquestionable authority, that Mr. Bacon did not 

 know of, nor did he believe in the principle of circulation, until it was ex- 

 plained to him by Mr. Atkinson. We made a journey, in 1828, to Mr. 

 Bacon's gardens at Abearnen, in Glamorganshu'e, for the express purpose 

 of seeing his operations, and there saw his original apparatus, which he 

 never could bring into any degree of useful action. His latest improve- 

 ments were to be seen in a greenhouse attached to his mansion, and we 

 had the authority of his gardener (who appeared to be a sensible well in- 

 formed man), for stating that they were so defective, as to be incapable of 

 resisting the frost, although there was at the time (November) a fire under 

 the boiler which consum.ed nearly a quarter of a ton of coals daily. 



Mr. Bacon's first apparatus consisted simply of a piece of large cast 

 iron pipe, closed at both ends, about tT\'elve feet long, as represented in the 

 accompanying diagram, with an open tube near one end for the purpose 

 of supplying it with water. The fire was applied under one end of the 

 tube, which, presenting so small a surface to its action, was long in 



