SILK-WORMS. 
49 
4th. Of the Birth of the Silk-worm. 
When the cultivator has observed the state of the 
vegetation in the mulberry leaf, and imagines it 
fitting to have his silk -worms hatched in ten days, 
he will put the eggs in the boxes in the proper 
quantities ; he must weigh them carefully, and 
keep a register, in which he must note his obser- 
vations upon the course andprogress of the in- 
sects, and thus at once secure theory and prac- 
tice ; beginning by marking the day and hour 
upon Avhich he sets the box in the stove-room, 
and also the number of the box, and, in short, 
every thing that may be worthy of notice. The 
wicker hurdles should have paper laid inside of 
them, and the distance I have desired may be left 
between the boxes, is to prevent the silk-worms 
from going from one to the other. 
If the temperature of the stove-room should 
not reach 64° on the day fixed upon to put in the 
eggs, it is necessary to light a little fire, that it 
may rise to that degree of temperature (64°'), 
which ought to be continued during two days. 
Should the thermometer indicate that the exte- 
rior air is above 64°, the shutters should be 
closed, and the door and the ventilator opened to 
create a draught, and cool the stove-room. The 
third day the temperature should be raised to 
66° ; the fourth day to 68° ; the fifth day to 71°, 
s 
