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295 OBSERVATIONS on the native 



I was fo lucky as to find five cocoons that had live found 

 nympha! In them. Thefe five I placed in my garret op- 

 pofite to a window, that fronted the fun rifing, I did this, 

 that the warmth of the fun might forward their coming out. 



May ID. One of the flies came out; but the window 

 happening to be left open it made its efcape. 



May 13- One of my pods produced a large brown fly, 

 beautifully fpotted, next day two more of them produced 



each a fly. 



May 17. One of the flies, which came out of a large 



loofe pod, began to lay eggs. On the 22d, the other two, 

 which were males, grew very weak and feeble and unable 

 to fly. Next day one of them died, and the day follow- 

 ing the other died; the female fly all this time continuing 

 to lay eggs ; on the 24th at night {he alfo died, having laid 

 near three hundred eggs. May 31, my laft pod produced 

 a large female fly, of the brown kind like the rcfl:. But 

 there being no male I could exped no increafe from it. 

 June 3d, ftie began to lay eggs and continued fome days : 

 On the 8th flie died, having laid upwards of two hundred 

 eggs. Thefe which my laft; fly laid looked at firfl; large 

 and full, but in a few days they began to fluivel and be 

 indented in the middle, as did aU the reft:. ^ However, I 

 folded them all up In feparatc papers and laid them by, to 



fee if any would hatch the fpring following. 



The male fly is lefs than the female, but his colours are 



brighter and more beautiful. 



In the fpring of the year 1767, I examined the eggs, 

 and found them all dry, and not likely to produce worms; 

 from whence I concluded they had not been impregnated 

 by the males. This was a difappointment to me. But 

 being ftill of opinion, that they might be propagated, I 

 determined to make another trial with more caution and 

 circumfpedion. Accordingly, I fet out in fearch of co- 

 coons, and gathered fevcral of them both from the fwaraps 

 and upland. Thofc from^ the fwamps I got chiefly off the 



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alder; thofe from the upland, ofi^the wild crab-trce^and 

 the viburnum or black haw buftics. 



Thefe 



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