Jlccount of Mr. S. Sweetse7^''s Green-house. 



placed the different kinds of soils, generally used for the 

 purpose. 



These are the particulars as respects the building- of the 

 house, as taken from exact measurement, and drawn to a 

 scale in the above plans. The expense of erecting the same 

 will be given at the close of this article. The next and 

 most important thing is the method of heating by hot water; 

 and, as we wish to be perfectly understood, we have had 

 engravings made, which we shall here present ; and from 

 them, with the annexed description, we believe any person 

 can have a similar apparatus constructed. 



The size of the furnace, or head of the flue (^^5. 3 and 4), 

 has been previously given. It is built of eight inch brick 

 work; on the side next the walk and the back towards the bor- 

 , der is a hot air chamber, five 



inches wide. All the heat 

 is thus saved and conduct- 

 ed into the hoyse through 

 an aperture (a), on ,the 

 surface, at the back. The 

 cool air drawing in at a 

 similar aperture (b) open- 

 ing into the shed, and be- 

 coming heated as it passes 

 out at the former one (a). 

 This chamber is formed by 

 merely building up one 

 course of brick on two 

 sides of the furnace, at the 

 distance of four inches, and covering the cavity, with the 



L^ 



exception 



of the apertures. 

 4 



The doors (c c) are those 

 used for common boilers. The 

 grate (/) is moveable, being 

 bars of inch iron resting on a 

 cross bar in front, and upon the 

 brick work at the back, as seen 

 in the side section {Jig. 4). 



The flue (g) is built like any 



common one, and connects with 



the side of the furnace. The 



boiler (h) is sixteen inches 



wide, twenty inches long, and 



fifteen deep, measuring from 



the under side of the rim, and 



contains about sixteen gallons 



■of water. The pipes {i i) are four inches in diameter, and 



both them, the boiler and the reservoir, are made of copper. 



'The reservoir, which is only shown in the section of the 



