substituted. Those of the white mulberry are 
preferable, for — - 
First — The tree bears leaves earlier in the 
spring; 
Second — A greater amount] of leaves are fur- 
nished in a shorter period of time ; 
Third — The silk produced from these leaves is 
of that sort most desired by the manufacturers. 
IV. Should any worms hatch before the above- 
named leaves are procurable, substitutes must be 
given, such as lettuce, or even tender cabbage leaves ; 
but they will not thrive on this kind of diet during 
their last ages. 
V. Young worms must have the leaves chopped 
up for them during the first three ages. This saves 
a great waste of leaves and is also a great advantage 
to the young worms ; because the smaller the 
leaves are cut the greater is the number of fresh- 
cut edges that exist, and the greater the number 
of worms that can be fed on this amount of leaves. 
VI. Do not allow the leaves on the trays to 
ferment, as the odor from fermented leaves will tend 
to generate diseases. 
VII. The litter must be allowed to remain on 
the trays while the worms on them are moulting; 
for the worm, during its sickness, does not like to 
be disturbed. 
