SILK WORMS. 143 



torn of the stage. The doors and windows must be opened, 

 in order that the air may circulate freely. In the morning 

 and evening, or if the weather be cold or rainy, the doors 

 and windows must be shut, and the room warmed, by 

 placing therein a chafing-dish with dry dung well ignited. 

 That is better than changing the worms of the cocoon 

 room at the commencement, or at the middle of the work, 

 when, in the first instance, they would have been exposed 

 to the rain. 



ANOTHER METHOD. 



Nong-sang-thong-kioue. 



In the southern countries it is the custom to establish the 

 cocoon room in the house ; in the North, they are construct- 

 ed outside ; at the South they are placed in the house, be- 

 cause but few silk worms are raised, and it is easier to take 

 care of them, (literally: distinguish ;) but that is not practi- 

 cable, when one has a large quantity of silk worms. In the 

 northern countries the greater part of the cocoon rooms are 

 placed outside ; but it often happens, that a multitude of 

 worms are stifled and crushed ; thus the cocoon room, of 

 the South and the North, have their particular inconveni- 

 ences. The following observations are due to a skilful 

 raiser of silk worms. 



In the South and the North, when there are few silk 

 worms, the doors and windows of the nursery are opened, 

 and the cocoon room established there. That method is 

 good, but it must be renounced if one has a large quantity 

 of silk worms. 



In the middle of the yard a long shed must be construct- 



