CH. 7-] MUSHROOMS. 137 



people can lift off and on at pleafure ; and 

 in the feverity of Winter it can be covered 

 with litter, &c. to prevent the froft from 

 deftroying the plants or fpawn. The 

 boards ihould be imbricated and well paint- 

 ed or laid over with pitch, to prevent the 

 wet from penetrating ; and a trench fhould 

 alfo be dug all round the bed, to keep its 

 bottom dry. Boards fhould alfo be made, 

 at two or three different places, to (lip for 

 the admiflioa of air, when required. 



B 



SECTION II. 



On Preparing the MuJhroom-Beds. 



ECAUSE the feeds of Mufhrooms 

 have not yet been difcovered, fome 

 are doubtful whether there be really any 

 fuch thing ; and not a few are of opinion, 

 that this, and many other plants, are pro- 

 duced fpontaneoufly without feeds. Mr 

 Berkeley fays, " The extremely fmall feeds 

 u of fern, mofles, mufhrooms, and fome other 

 " plants, are concealed and wafted about 

 " in the air, every part whereof feems re- 

 " plete with feeds of one kind or other." 



And 



