134 



BRITISH MODES OF CULTIVATING 



combining the culture of the Vine and the Pine. 

 Mr. Oldacre has two of these houses, one is built of 

 timber, in the usual way, (fig. 13.) and the other is 



of the same form, but roofed with copper sashes. A 

 full command over the air of these houses is obtained 

 by the returns made by the flue in the back path 

 ( a ) ; the curb of the pit is about three feet from 

 the glass in front ( b ); and about five feet from it 

 behind ( c ) ; vines are trained up the rafters, but 

 none are grown in the back path ( e ), which is 

 paved. 



In addition to the flues, steam is also employed 

 as a medium of communicating heat. But the ap- 

 paratus was erected chiefly as matter of patriotism, 

 when steam first came in vogue, and is on a very 

 imperfect plan, and of little real use. The boilers 

 are placed over the furnaces, and the same fire 

 which heats the water of the boiler, passes along 

 the flue -, the steam tube of the boiler is laid on 



