78 DESCRIPTION OF THE SILK-WORM, 



in natural history, together with my own 

 observations, I find, the different sorts of but- 

 terfly go through similar changes, but at va- 

 rious periods, and each different butterfly dif- 

 fers equally in its caterpillar state : there are 

 smooth caterpillars of different colours and 

 sizes, and some beautiful and hairy ; likewise, 

 they vary in the different sorts of food they 

 choose, but they all in their different seasons 

 become winged. 



DESCRIPTION OF THE SILK WORM. 



Par. 93. The silk- worm goes through 

 nearly the same changes, but at a different 

 season to the last named ; the egg is hatched 

 about the month of April or May, and then 

 remains in the caterpillar or worm state till 

 about July ; during this time it will consume a 

 considerable portion of food if you give it what 

 is fond of mulberry leaves are its greatest 

 favourite ; it will then change into a pupa, 

 which is more hard than the larva or worm ; 

 in this state it remains some time, and having 

 produced silk, it then turns to a moth, and 

 after laying its eggs it very shortly dies. 



THE REASON FOR INTRODUCING THE ABOVE 

 INSECTS. 



Par. 94. I would give a description of a con- 



