SECTION V. 
PERFECT PERIOD. 
The moths, or perfect insects, issue from the 
cocoons in the morning from four to nine o'clock. 
As soon as they pierce their cocoons, they are 
placed in a dark room on pieces of blotting paper, 
until they discharge a liquid of a light brown color. 
As soon as this is discharged, which is usually in 
five or ten minutes after they emerge from the 
cocoon, they should be placed on sheets of card- 
board and mated. After ten or twelve hours have 
elapsed, they maybe separated, and the males thrown 
away. Now place the female moths on large pieces 
of paper, card-board, or linen, for the purpose of 
laying their eggs. The cards on which the moths 
are to lay their eggs are tilted at an angle of 45 °: 
this will cause the moths to lay their eggs closer 
than if the surface is horizontal. 
The number of eggs .laid by each female moth 
varies from 300 to 450. 
The eggs, when laid, are of a yellow color, 
which, if the eggs are not defective, changes in a 
few days to a bluish gray. 
In this climate, there is no danger of eggs laid 
late in the summer hatching before December ; but 
after that time they must be kept in a temperature 
below 40 Fahr. 
