56 
THE ART OF REARING 
CHAPTER V. 
OF THE SMALL LABORATORY TO WHICH THE NEW HATCHED 
WORMS SHOULD BE REMOVED; OF THEIR REMOVAL, AND 
ON THE PROPORTION BETWEEN THE WEIGHT OF EGGS 
AND THAT OF THE WORMS OBTAINED. 
Experience constantly shews, as we shall 
provein Chap. XII., that if it is injurious to ex- 
pose the silk-worms to a great heat and dryness 
of temperature, it is no less so to transport them 
into a cold atmosphere, were it only for the space 
of one or two days. (Chap. XII.) And facts 
equally demonstrate the usefulness of proportion- 
ing the space of the rooms to the quantity of 
silk-worms it is intended to rear, both for econo- 
mical motives, and also for the well-being of the 
silk-worm : it is, therefore, necessary to deter- 
mine the space which a certain number of silk- 
worms should occupy, during the several stages 
of their progress. It is also worth observation to 
remark the progress by which in the evaporation 
of the egg, the embryo becomes a healthy and 
6trong silk-worm. 
We shall, therefore, in this chapter treat of the 
following subjects : 
1. Of the laboratory, or closet destined to re- 
ceive the new hatched silk-worm. 
2. Of moving the silk-worm, directly after it 
is hatched. 
