THE CANADIAN HORTICULTURIST. 



147 



And it looks almost as if it were all body, for the wings are very small 

 indeed, and seem to be but mere rudiments of wings, wholly unsuited 

 to the i)urpose of sujjporting sucli a body in the air. The butterfly now 

 seeks a place where the wings can hang freely, often remaining hang- 

 ing to the empty chrysalis, or under surface of some support, to which 

 it fastens by means of its claws. In this position the wings grow with 

 a rajndity tliat is most marvellous. They are not folded up and merely 

 unfolded, but actually grow from tlie size of the wings of a large bee 

 until they measure four inches across, and that within thirty minutes. 

 The a})peaiMnce of the butterfly when its wings are fully grown 



Fig. 15. 

 may be seen at iig. 15. The ground color of the wings is a bright 

 orange-red, margined with black, and dotted with white spots in the 

 black ))order. 



We have given this account of the history of this insect, not because 

 it does any injury to our crops of fruit or grain, but because its history 

 illustrates the metamorphoses of many other insects, and any who wish 

 can easily rear it in confinement, and watch the changes it undergoes. 



RISE AND FALL OF SAP. 



It is a very counnonly received idea that the sap of trees descends 

 in autumn, and when the leaves fall, returns to the roots whence it 

 came in the spring. It does not seem to have once occurred to those 

 who accept this view of the matter, that there would be any difficulty 



