On the Management af the Silk-Worm. 415 
The Second Age,— the dth day of rearing. 
On the morning of this day they will have cast their skins, and re- 
quire food. As on the beginning of the former age, twigs should be 
laid over them, and as soon as they get loaded with Worms remove 
them to clean paper trays ready prepared for them. In this age they 
will require double the space to grow in, as they increase so much 
more in size; they must be laid in squares, about one-fourth the space 
they will till during this age; and care must be taken to enlarge the 
squares every time they are fed. Due attention must be paid to increase 
the quantity of food given, up to the fourth day; on the fifth day they 
will require but little, and on the sixth little or none, as they will be- 
come torpid: in this age the leaves need not be cut quite so fine. — 
They will consume double the quantity, and in less time. The tempe- 
rature of the apartment should be kept as regular as possible, and it 
must be well ventilated, but no strong ciiiTent of air should be allowed 
to pass over the Worms; and when the sun shines, a blind should be 
hung up against the window, as the rays of the sun are very hurtful 
to them. 
The Third Age, — the loth day of rearing. 
In this age, the Worms increase so ftiuch in size, that more than dou- 
ble the space will be required to what they had last age, and four 
times the quantity of food. As soon as the Worms are revived, re- 
move them to clean trays, as explained in former ages : increase their 
food up to the fifth day. The sixth day, half the quantity will suffice 
as given last day; and on the seventh little none, as they will be- 
gin to cast their skins, and enter upon theirtr, urth age. 
The Fourth Age, — the 21st day of rearing. 
In this age they v^'ill consume about three times the quantity of leaves 
as given last age ; they should be older, and not cut so fine, and will 
require rather more than double the extent of tray. Remove them as 
in the last ages, on clean trays, and every time they are fed increase 
the quantity of food up to the fifth day. The sixth day, about half 
the quantity, and on the seventh day little or none, as they go through 
their last moulting, and enter upon their last and most precarious stage 
as Silk-worms. 
If the weather be cold, a fire should be kept up ; but be careful of 
smoke, as it is very hurtful. If the weather be favourable, blazes of 
wood shavings, or light wood, should occasionally be had recourse to, 
to agitate and renew the air within, and to check any bad unpleasant 
smell, and carry off any damp. 
