[ 175 3 lUi> 



Separation of the Silkworms which will iioi rise: ckuning the 

 loicker hurdles for the last time. 



Four-and-hventy or thirty hours after the worms liave first begun to 

 jise, and when four-fifths have risen, there remain on the wickers 

 those that are weak and lazy, which do not eat, do not seem of the dis- 

 position of those that have risen, but remain motionless on the leaves, 

 without giving any sign of rising. These should betaken away, and 

 put cither in the small laboratory, or in any dry clean room of at least 

 73° of heat, where there are hurdles covered with dry clean paper, and 

 the hedge ready prepared for them. 



As soon as they are thus placed, some will rise directly; others wjll 

 eat and then rise, and so on till all will have risen. These v/orms will 

 have acquired the vigor and stimulus they wanted, by being put in a 

 warmer and much drier apartment. 



The great mass of silkworms in the large laboratory, in evacuating 

 themselves, often soil one another, which will destroy their vigor, and 

 indispose them to rise; the best remedy is to remove them at pnce to a 

 dry and tolerably vv'arm place. 



Should these worms be very numerous, not only should there be 

 the hedge round the hurdles, but also the clump and hedge across, that 

 they may have every facility for rising offered to them. 



If only apart of these worms appear inclined to rise, they should be 

 •covered with some leaves and some twigs put over them, that, when 

 <hey climb upon these, they may be taken in the hand, and put upon 

 the cabins, as they are tlien ready to rise. 



With this atjsistance, the lazy worms will distribute themselves in 

 the branches, evacuate, and begin vvxaving cocoons. 



Before these few worms are put on the cabins, we may form a sort 

 of support or couch of wheat or rye straw for them among the branches, 

 lo prevent their dropping off, and to give them time to fasten them- 

 selves to the branches. In this manner have been attained cocoons 

 from almost every silkworm. 



All the silkworms being off the hurdles, having either risen or been 

 carried away, no time should be lost in cleaning the hurdles, which 

 piust be done with the greatest expedition. 



Care of ihc Laboraiori/ until the Silkivorni has completed its 



fifth age. 



ist. When the worms manifest a desire to rise, infinite care should 

 he taken to prevent the temperature of the laboratory from falling: [or 

 rising;] it should be maintained between G8° and 71° by means of the 

 ventilators in the ceiling and floor, which must be opened more or 

 less, according to circumstances; and the air may be circulated from 

 the contiguous apartments, by opening the door^s into them. 



It is proved that any violent agitation of air cramps the worms, 

 stunts thcni; causes them to drop off, and suspend the worlf they ha4 

 begun. 



