304 
THE ART OP REARING 
In each of the laboratories there is a large 
door, in which a smaller one has been made, and 
two windows, or apertures, to admit light. 
When the sun strikes on these, the interior 
blinds or shutters should be closed. 
I must observe, that these slight improvements 
and alterations in rooms are important, cost little, 
and produce great benefit. 
When the apartment is capable of containing 
the worms of four ounces of eggs, a brick stove is 
indispensable ; it warms more thoroughly than 
fire-places, and consumes less fuel. Fire-places, 
in general, are only used for burning blazes, and 
wood is only burnt in them when the exterior 
temperature is very cold indeed, and continues 
such for any length of time. The fire-places 
should be boarded. 
As soon as the allotted space is arranged as I 
have described, the cultivator should not be al- 
lowed to put the silk-worms in the kitchen, or 
anywhere but in the laboratory, well spread out 
on the wicker tray-stands : those who do not in- 
sist on this will stand a chance of seeing the 
greatest part of the silk-worms sick or dead before 
they are full grown. 
These misfortunes, to which cultivators are ex- 
posed, arise from their making the silk-worms 
pass through sudden and violent transitions when 
