SILK-WORMS 
57 
3. Of the loss of weight experienced by the 
eggs in the stove-room. 
1. Of the Laboratory, destined to receive the Silk- 
Worms newly hatched. 
This small habitation is to contain the silk-worm 
until its third casting of skin, or moulting*. The 
room should be in exact proportion to the num- 
ber of silk-worms, and calculated for facilitating 
the attendance upon them. Thus proportioned it 
will be economical, as there will not be that 
quantity of fuel used, which it would take to 
warm either one very large room, or several 
small ones. 
It may be necessary to know the space required' 
by silk-w r orms, in their various stages of growth. 
The worms proceeding from an ounce of eggs re- 
* In explaining 1 the use of the small laboratory, I have iu 
view to show how much more economical it is, than apart- 
ments either too large, or indeed too small. However, 
others must be guided by their own convenience in making 
use of those rooms they find suitable. And should there be 
but one apartment for the rearing of the silk until the cocoon 
was formed, it would be of small consequence, provided at- 
tention were given to maintain with exactness the tempera- 
ture, in all its degrees, which I shall indicate. One room 
suffices, particularly for those who hatch but a small quan- 
tity of silk-worms, if they have wicker tables enough to put 
sufficient space between the worms. These should be two 
hundred and ten feet square, for disposing of the silk-worms 
proceeding from one ounce weight. 
D 5 
