26 



INTRODUCTION 



blossom in the legitimate way they alight upon 

 the outside of the flower along the middle of the 

 calyx-tube, biting a hole through it and stealing 

 the nectar. 



PASTURE THISTLE 



The Dandelion, the White Daisy and the 

 Thistle are examples of still another type of 

 flower structure. These are typical representa- 

 tives of the great family of composite flowers, in 

 which a large number of tiny flowers, called 



