17^ Mode of Heating Rooms by Steam. 



manner are much more wholesome and agreeable than thos« 

 heated hy the best constructed stoves, behig perfectly free 

 from vapour or contamhiated air. 



By various experiments it appears that the expense of fuel 

 is scarcely one-half of what is necessary to produce the same 

 idegree of heat with the best constructed stoves. The me- 

 morialist vvas the better able to make the comparison, since 

 he had previously had live years experience of cotton milb 

 on what was, at that time, reckoned the most approved 

 plan. 



After having ascertained these results, the memorialist, 

 in 1800, drew a plan similar to that now presented to the 

 society, and sent it to Glasgow to his employers, who were 

 very doubtful of the success of the scheme, Tbey imme- 

 diately published the discovery in the Glasgow newspapers, 

 inviting cotton spinners, and others interested, to inspect 

 the plan. In consequence of this public intimation of the 

 method having been successfully practised, a number of 

 cotton spinners turned their attention to it, and adopted it 

 with various modifications, according to the convenience of 

 their mills, or their notions of improvement. 



The memorialist afibrded to every person who desired it, 

 all the information on the subject which he possessed. His 

 jreneral recommendations were to detach the condensed 

 water, in reluming it to the boiler, as much as possible 

 from the steam ; and where tin pipes, or others of similar 

 strength, were used, to secure them carefuUv with safety 

 valves. 



There are ohvlous defects in the application of the prin- 

 ciple, as practised in the instance described above. Of some 

 of these the memorialist was perfectly aware at the time of 

 the first construction of the apparatus, though it was out of 

 his power to remedy them ; and he has thought it proper to 

 give a detail of the first successful experiment exactly as it 

 look place. 



From the pipes being all in one end of the house, the 

 heat was unequally diffused, and a considerable time elapsed, 

 after their being first heated, before it reached the other end 

 of the rooms. But, as the mil! had barely room enough for 



the 



I 



