1^5 Mr. Delahigarre on Silk Worms* 



fuitable to the hatching, is 42° of Reaumur's, or ^6° of 

 Farenheits thermometer, which is reckoned the common 

 heat of the human blood. 



(yth QvE.) Is it not poflible 'o hatch thefe eggs by artificial 

 fire, in ovens, ftoves, or hot rooms ? 



(Ans.) That way is praftifed and recommended by people 

 raifing filk worms upon a very extenfive fcale, but we find 

 that it would require too much expence, to render it 

 prafticable to the greater part of our country folks. Thefe 

 coftly experiments agree very well with fome curious and rich 

 people, who can afford to build ovens and fl:oves, &c« The 

 moft-eafy and leaft expenfive way, ought to fix all our attention 

 at prefent. 



Merely to fatisfy the curiofity of forae of our readers, we 

 beg leave to give here a fiiort defcription of a new contrivance 

 for the purpofe of hatching. 



"Under the roof of a houfe, chufe a room of about 10 

 feet fquare, and 8 or 9 feet high ; fix a ftove in the middle, 

 the funnel of which mufl carry the fmoak out through the 



r 



roof; make two fmall openings in the roof, 3 feet diftant 

 from the funnel on each fide ; fix on both openings an iron 

 pipe, open around like a grate ; it may be made of iron wire 

 fo as to give an eafy accefs to the air. In the mean while, to 

 prevent the coming in of birds, rats, or any vermin, you 



