SILK WORMS. 91 



tiles, pierced with holes, to facilitate the escape of the 

 heat. 



The old paper employed to cover the windows, must be 

 replaced by white and perfectly clean paper. For fear the 

 heat will escape, care must be taken not to raise the win- 

 dow shutters, or the straw mats from the windows, or the 

 doors, during the time (he old paper is being pulled off, 

 and new pasted on. At the top of each window, place 

 four large window blinds, or screens, of firm texture. They 

 must be arranged in such a manner as to roll up or unroll 

 when wanted. (Sse-nong-pi-yong.) ( 



NONG-SANG-THONG-KIOUE. 



When a nursery is wanted, for the silk worms, a house 

 must be constructed, exposed to the south. Above all, a 

 smooth and agreeably situated place must be chosen. The 

 best exposure is that exactly to the south ; that of the 

 south west is not so good, that of the east still less so. 



If the house is old, it must be swept with a great deal of 

 care, and plastered a long time before it will be wanted. 

 If it is done a short time before the hatching of the silk 

 worms, the partition walls will preserve a dampness which 

 will be fatal to them. Some persons cover the house with 

 tiles, others with thatch. Timber and wood work must be 

 plastered within and without to prevent the danger of fire, 

 In the nursery, pillars must be placed, furnished with cross 

 pieces, to receive the frames. The windows must have 

 a large opening, to admit sufficient light to distinguish the 

 sleeping and the awakening of the silk worms. Above the 



