( 37 ) 
($f embryo plants would, by one day 3 grc*'* 
heat, be totally deftroyed. All that is fc- 
quired, is a kindly warmth juft to fet the 
fpawn in motion, and forward it in Ihooting 
out its tender fibres over the dung and earth. 
But it muft be remembered, that a bed 
being fpawned and clofely covered over with 
the neceflary coat of earth, ,an inch or two 
thick, thereby excluding the outward air, 
and confining the heat within, occafions that 
heat to be renewed afrelh, and might caufe 
the bed to burn i fo that you muft be cauti- 
ous in putting in the fpawn while much heat 
remains : nor muft the covering of litter be 
applied too foon after, efpecially in ftrong 
beds : for thefe require a week, a fortnight, 
or more, before this is proper to be done. 
Be careful therefore in thefe particulars: 
for on fpawning and covering in at a due de- 
gree of warmth, depends the whole' fuccefs; 
and 
