THE 



FLORICULTURAL CABINET, 



APRIL 1st, 1837. 



PART I, 



ORIGINAL COMMUNICATIONS. 



ARTICLE I. 



OBSERVATIONS ON AN APPARATUS FOR IIEATIXG A PIT. 



BY C C. B. 



Having sent you some months ago an account of a little apparatus 

 which I had employed for heating a pit, I now send you the result of 

 my experiments, which I can venture to recommend for general adop- 

 tion. To those who may not in the mean time have contrived any thing 

 better for themselves I am the more anxious to do so, because I find 

 that my previous suggestion has been acted upon in several quarters, 

 and I fear that some disappointment may have arisen to those who 

 adopted it as an effective instrument which was litle more than an 

 essay towards one. For those who may have been so disappointed, I 

 just mention that by using from eighteen to twenty-four feet of three- 

 inch pipe, instead of nine feet, and substituting a small cistern holding 

 two or three gallons instead of the funnel, the apparatus may be effec- 

 tive ; and by this last expedient of a cistern, my original apparatus 

 was worked efficiently for more than seven months. The boiler, how- 

 ever, which I am about to describe, possesses so many advantages, 

 over the former, that I should not recommend any one putting up a 

 new apparatus to follow the former model. 



The annexed sketches will explain both the form of the boiler, and 

 the mode of applying it. 



No. 1. represents the boiler, a double cone of copper or tin, nearly 

 resembling a loaf of sugar with the top cut off. The boiler containing 

 a shell of water about one inch, or one inch and a half thick surrounds 



Vol. V. „ 



