SILK-WORMS. 
47 
ing the small boxes, which contain the young 
worms, or for moving them when they are more 
advanced. They should be long enough to cover 
the ends of the wicker trays or hurdles, of about 
a foot in breadth. 
7th. An air hole or ventilator in the floor of 
the room (Fig. 10.), with a sliding panel to 
open and close it, but which, in general, must be 
closed ; it may be used to temper the heat, should 
it have exceeded the degrees which 1 shall point 
out, as necessai*y for bringing forth the silk-worm. 
We have thus the means of making a gentle cur- 
rent of air between this air-hole and the door, 
to correct the excess of heat indicated by the 
thermometer. 
8th. A glazed window, to light the stove-room ; 
it is a vulgar error to imagine that light is not as 
necessary to the animation of the silk-worm as 
to that of every other living thing. The light 
does not incommode the silk-worm, until it has 
reached its perfect state of moth, as we shall 
mention in the tenth chapter. 
This is all that is required to furnish a stove- 
room. It is superfluous to add that this room 
may be used for rearing the silk-worms, as well 
as for hatching them ; and also that this room, 
which may be heated with little expense, might 
hatch silk-worms for any number of persons : it 
might be considered as a species of shop, which 
