Page:Philosophical Transactions - Volume 004.djvu/103

 structure of the Ovarium; the parts of generation; the coit, and the strange length of the time of it, the Male beating his wings about 130. times in one copulation; the multitude of Eggs amounting to 300. 400. sometimes 500; and the death of the poor Fly, following 5. days after the coit in Summer, but not before the 12th day in August.

He omits not to instruct the reader of the ways of keeping the Eggs, and the manner of ordering them for Hatching: where he takes notice of one kind of Butterfly in Sicily, which is made twice fecund in one year, viz. in the end of Aprill, and the end of August.

He concludes with the way of Winding off the Baggs, and informes us, how many threds together will make good substantiall silk; where he affirmeth, that sometimes he hath reckon'd 930. Bononian feet of silk, wound off from one bagg, without the exteriour lanugo, and the inmost last part, which both together might make a fourth part of that length more.

Rh