28 ^ INTRODUCTION 



almost any good-sized comix)site flower and com- 

 pare what you see with these drawings you will 

 be able to make out the structure of the parts of 

 these tiny flowers. 



In the case of the Daisy, the Wild Sunflower 

 and similar plants the petals of the florets around 

 the outside of the head have been greatly enlarged 

 and modified to serve in attracting insects to visit 

 the blossom. Their importance in this respect you 

 can readily show by pulling off the ray florets of a 

 white Daisy and comparing the conspicuousness 

 of the flower-head that is left with that of another 

 in w^hich the ray florets have not been removed. 



BOOKS FOR COLLATERAL READING 



In the study of any subject it is generally desirable that 

 the student should read more than one book in order that 

 he may obtain a fuller knowledge and get a varying point 

 of view. In the following pages there will be found fre- 

 quent references to the special treatment of various wild 

 flowers which occurs in the books in the list below. It is 

 desirable that these books be available for reference by 

 the students, so that they may follow out the suggestions 

 for study given in these pages. 



Blanchan. Nature's Garden. Doubleday, Page & Co. 



Dana. According to Season. Charles Scribner's Sons. 



Gibson. Blossom Hosts and Insect Guests. Newson 

 and Co. 



Higginson. The Procession of the Flowers. Hough- 

 ton, Mifflin and Co. 



Weed. Ten New England Blossoms and their Insect 

 Visitors. Houghton, Mifflin and Co. 



