I faw flicking to theglafTcs in which I kept the moths, which in their 

 fluttering againfl the glafs or one another, had heen rubbed off their 

 wings and other parts of their bodies ; and to the naked eye, exhi- 

 bited the appearance of a vapour or fmoke on the glafs. 



Though I examined fome thoufands of thefe feathers, they were 

 all fo differently formed, that I cannot fay I faw two exactly alike. 

 Fi'^ 13, A B, CD, EF, reprefents three of the largeft of them, when 

 feen through the microfcope. At their broad ends, they a^e tinged 

 with black, and when feveral of them lie clofe together, they exhi- 

 bit a black fpot. Others of thefe feathers, as 7^-. 14, GH, IK, LM, 

 are tranfparent, but when lying one on another they produce the- 

 whitenefs 1 have mentioned. All of them, although fo very minute, 

 have quills like the feathers of birds, by which they are fixed or 

 rooted in the membrane that forms the wing, and lo completely 

 cover it that it cannot be feen. 



The feathers, wliich cover the edges of the wings, are much 

 longer than the others, and of different fliapes ; five of them are 

 reprefented at^^. 15, RS, TVW, and atjjg. \6, NOPO, arefliewn 

 a number of the fmall feathers of different fhai:;es. 



This maggot, which among us is called the wolf, is not only 

 mifchievous, by devouring the corn, but it is of that Ipecies which 

 is found in houfes, and gnaws holes in woodj alfo in boxes and 

 books, and likewife hides itfelf in woollen garments, eating holes 

 in them, and at length becomes a flying infedl:^ named as before 

 mentioned, a moth. 



This moth., of itfelf, is very innocent, for while in that ftate, it 

 .does not, as I could difcover, take any food, but, if not deftroyed in 

 time, one female may produce feventy maggots, for out of upwards 

 of feventy eggs, laid by one moth, I only faw one barren ; and in 

 three others of the eggs, I could difcern the maggots lying dead, by 

 jeafon, as I fuppofe, that they could not break their fiiells. 



1 heard it affirmed, by a corn-dealer, in fupport of his opinion. 



