BLACK AND YELLOW SWALLOW-TAIL, 
which they eat freely. In about three days, 
some of tliem became full fed. They theiY 
forsook the food, getting on the sides and cor- 
ners of the cage, where thev remained fixed 
and motionless: after resting two days in this 
manner, he found that one of them had fastenecl 
his tail to the wood> by a small white spinning, 
and was very busy in making a fine white silkefi 
thread, the ends of which were fixed, one on 
each side, pretty near the head. I could 
not," says our Aurelian, " help admiring, 
with what care and pains he worked, to make 
it strong; rubbing, with his mouth, backward 
and forward, with ^^uch a motion as the shoe- 
makers use in waxin.q; their ends. Vv'hen 
finished, he put his head under or through it, 
and tiie thread then fell across his back ; but 
the thread now appeared too big for him. Af- 
ter this, he remained two days more : during 
which time, he shortened, and G,re\v thicker ; 
and, at length, changed into the Ciirysalis. The 
Fiies aj)peared the middle of May." 
From this first brood, there proceeds ano- 
ther, whicii appears in the FIv state in August, 
'j'lie second brood goes through the winter n\ 
the Chrysalis state. 
