iS8 OF MUSHROOMS. 



-in great plenty if they will be at the tri- 

 fling expence of building a fhed againft 

 a fouth-wail, with a pit three feet deep 

 and four feet broad, the length according 

 to the quantity that is wanted. Thirty 

 feet long; will produce fuffjcient for a large 

 family, 



THERE mutt be a flue all round the pit, 

 |wo feet deep and eight inches wide, and 

 a vacuum of an inch on the infide next 

 the bed, which fh.ould be left open at top 

 that the heat may come up to warm the 

 top of the bed, which it would not if the 

 vacuum was clofe. 



vacuum all round prevents the 

 heat from drying the fides of the bed ; for 

 if the flue had no vacuum, the heat would 

 deirroy all production for a foot round at 

 leaft ; and when the bed is covered with 

 ftraw and litter (as it mud all winter) to 

 keep off the frofl and cold air, the ftraw 

 fhould be laid all over the flue and vacu- 

 \im, which will caufe a gentle heat all over 



6 the 



