Mr. Ddahigarre en Silk Worm^. irji 



heat happening at the time of their getting up to fpin, is apt 

 to choak the greateft part of them. On the other hand, a 

 cold, fuch as happens in the month of May, fometimes put.^ 

 the worms a Httle back, but it never injures them fo much in 

 the heat above the degree before mentioned. 



Then we may judge, that worms do better in dry weather, 

 with a northerly wind, than in damp weather, with a foutherly 

 wind, or during a dead calm. In this lafb fituation, it is good 

 to make fome light fire in their room, in order to rarify the 

 air, provided the room is well opened, and the fire fhould not 

 lafl longer than about half an hour. 



(25th Que.) How long do the worms remain feeding upori 

 the mulberry leaves, before they begin to fpin? 



(Ans.) Being over his lad moulting, the worm eats 

 voracioufly, and wants a great deal more food than before. 

 At the end of feven or eight days, he begins his cocoon; iu 

 that fliort interval it is very neceflary to clean the fhelves 

 every day, and procure as much pure air as the weather will 

 permit. 



(26th Que.) How may it be known that the worm is 

 mature and ready to fpin ? 



(Ans.) When you perceive him creeping upon the leaves 

 without biting them, but keeping his head up and turning it 

 in different diredions, as if he was looking for a place fit to 



