Mr, Ddahigarre on Silk Worms, lyy 



muft cover the top of the pipes with a kind of iron plate made 

 like an elbow, as you might have feen many caps fixed on 

 chimneys, turning very much like a weather-cock. 



The room being difpofed in that way, it remains to build 

 up upon four or fix pods, a kind of floor made with narrow 

 boards half an inch diilant from each other : that floor muit 

 be about four feet high, and fixed horizontally upon the pofts ; 

 on the floor yon lay as many fieves made of clear filk fluff, or 

 of fome gauze as you have occafion and room for ; in thefe 

 fieves you fpread at the thicknefs of two or three lines only, 

 and as equally as pofTible the eggs to be hatched. Then you 

 mufl regulate the temperature of the room by a thermometer, 

 according to the degree already mentioned. In order to keep 

 an uniform degree of heat, you will have a kind of turning 

 focket infide of the funnel of your fliove, with which you may 

 open or fhut up that funnel as you think proper. 



The eggs being well fpread in the fieves, never run the rifk 



of being choaked by their natural perfpiration, and there is 



no need to flir or turn them over from time to time, as in the 



common way of the bags, the heat penetrating as well under 



as above the fieves : if you want to give frefh air to the room, 



you may open the door or a window for a few minutes. This 



new method of hatching is lefs expenfive than many other 



contrivances we have feen before : provided you can go to the 



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