l)URATION OF THE PUPA. 4!) 
?o formed it ; but, though in size and 
shape it is perfect, it probably requires 
time for its limbs to become sufficiently 
firm and strong to enable it to run or 
fly ; for, the nymph, you know, is soft, 
and so is the fly with in side of it. 
Lucy, About how long is it necessary 
for them to remain in the pupa state ? 
Mother, Different species require dif- 
ferent lengths of time, but the greater 
number of moths continue in the torpid 
state about eight months ; they usually 
undergo their last change in Autumn, and 
come out in the perfect state about May 
or June. Some few species remain in 
the chrysalis for a whole year. 
Lucy, Is it not very wonderful how 
they continue to live without food for 
such a length of time ? 
Mother, If they moved about it 
would be very wonderful ; but as they 
never stir they are never exhausted, and 
therefore do not want food to restore their 
strength. 
Though moths remain so long a time 
D 
