DurHtfs H.ot-noater Apparatus. 



303 



fr\ 



Y 2 



a single design of the 

 kind until after I had 

 constructed my own; 

 and, since that time, I 

 have only read the 

 accounts of those which 

 are described in the 

 Gardener's Magazine. 

 I have derived much 

 amusement from these, 

 from observing that 

 other attempts have 

 been attended with 

 similar difficulties to 

 those which I had to 

 encounter, before I 

 could get this appara- 

 tus to act to my wishes. 

 I have great pleasure 

 in sending you a de- 

 scription of it, in order- 

 that you may judge of 

 its merits ; and, if you 

 think it likely to afford 

 additional hints, and to 

 be deserving of a place 

 in either the Gard. 

 Mag., or in the Arch. 

 Mag., it is very much 

 at your service. 



The apparatus con- 

 sists of a furnace, a 

 boiler, cast-iron tubes 

 of any diameter, an 

 expansion tube, &c, as 

 shown in the accom- 

 panying sketch. {Jig. 

 43.) The tubes may 

 be connected with the 

 boiler, in any way 

 which circumstances 

 require, and carried in 

 any direction, so that 

 they do not descend 



a, Furnace, section. b, Boiler. 

 c c c c, Hot-water tubes. 

 d, Expansion tube. e e, Return- 

 ing tube. 



