290 
THE ART OP REARING 
Is sooner clear and free of the worms, and may 
be made use of for other domestic uses. 
What I have said here will demonstrate the 
benefit resulting from proprietors erecting large 
laboratories*. 
My laboratory is constructed on principles 
I shall describe, and can contain the produce of 
twenty ounces of the eggs of silk-worms, that 
is to say, might yield about 20 cwt. of cocoons ; 
there is an engraving at the end of the book. 
The laboratory is about 30 feet wide, 77 feet 
long, about 12 feet high, and, when reckoned to 
the top of the roof, 21 feet high. (Tab. 1, Fig. 1.) 
Six rows of tables, or wicker trays, of about 
two feet six inches in width, may be placed in 
the breadth of the room (g-). As these wickers 
are placed two and two, there only will appear 
* There is at this moment, in this part of the country, a 
large laboratory, belonging to a proprietor, which is sufficient 
to contain the worms of twenty ounces of eggs. It yielded, 
In 1813, above 120 pounds of cocoons for every ounce of 
eggs. It is situated at Moraggone, and is the property Of 
an eminent agriculturist, who has there united, in a central 
point, the whole labours of his tenants. It required not 
any vast expense to erect this laboratory. He has only 
made use of a large granary, which he has adapted to the 
purpose, and for which he has had all the necessary utensils 
made. This place serves as a laboratory during one month, 
and then is again used as a granary during the remaining 
months of the year. 
