58 



Remarks on Cytisiis Addm'i. 



ff. Glass roof. 



g. Bark pit. 



h. Back path. 



i. Pit for dung casing. 



k. Drain. 



I, Hinged cover of ledged boards, to 



protect the dung from the rain 



and wind. 

 m. Ground line. 

 n. Suspended shelf for strawberry 



pots, 

 o, Slate shelf for pots. 

 p. Stink-trap communicating with 



the cross drain {q), which leads to 



the main or barrel-built drain (A). 

 r, Corbett's hot-water apparatus, 

 s, Hollow wall of bricks on edge. 



Fig. 19. 



Cross Section of a Pit to be heated according to Mr. 

 Corbetfs System. 



to the plan (Jigs. 18. and 19.) I now send you, which is designed 

 for the approval of His Grace the Duke of Somerset. 



We can safely recommend this system of Mr. Corbett's as 

 the best that has come under our observation ; and we speak 

 advisedly, having had a great deal to do with various systems of 

 hot water under their worst and best forms. In grape, peach, 

 and pine forcing, and in stoves appropriated to the culture of 

 orchidaceous plants, it ranks above, and must ultimately super- 

 sede, all other systems. Mr. Corbett, by his invention, has done 

 much to advance horticulture, and conferred a great boon on 

 his brother gardeners, deserving their best thanks, together with 

 the patronage of their employers. 



Exeter Nursery, Jan. 10. 18 41. 



A moment's reflection will convince our readers that the 

 above mode of heating does not at ail interfere with Mr. Penn's 

 svstem of ventilating ; for the open gutters of hot-water, if 

 placed in Mr. Penn's hot-air chamber instead of his pipes, or in 

 part as a substitute for them, would doubtless saturate the air to 

 be circulated better than the water at the bottom of the cross- 

 drain. We formed an unfavourable opinion of Mr. Corbett's 

 mode of heating when it was first announced, as will appear by 

 our Volume for 1838, p. 527.; and this was partly from an 

 idea that Mr. Corbett claimed too much for it. Having heard 

 Mr. Glendinning's opinion on the subject, we have lost no time 

 in publishing it, with a view to doing Mr. Corbett justice; and 

 we hope that his system will soon take that high degree of rank 

 among other systems to which it seems so well entitled. — 

 Cond. 



Art. III. On the Ci/tisus Adam\, or Purple Laburnum- 

 By M. PoiTEAU. 



1 RECEIVED your valuable letter, and it is with much pride and 

 satisfaction that I find you have applied to me rather than to any 

 one else for the information you desired respecting the Cytisus 

 Adam/. 



