List of Illustrations 



Page 



F. D. Coburn Frontispiece 



A Typical Alfalfa Plant i 



Typical Stems and Foliage of the Alfalfa Plant i 



An Eight-year-old Alfalfa Plant 6 



Crown of Plant Shown in the Preceding Illus- 

 tration 6 



Alfalfa Blossoms Enlarged 7 



Intergrading Types of Seed Between Alfalfa and 



Sweet Clover 12 



Seeds of the Weed Known as Buck-horn . . 13 

 Alfalfa Seeds Magnified Five Diameters ... 13 

 Sweet Clover — Alfalfa — Yellow Trefoil ... 26 

 Three Distinctive Types of Alfalfa Seed Magni- 

 fied Twelve Times 27 



Yellow Trefoil Pods 32 



Alfalfa Seed Pods 32 



Sweet Clover Pods 33 



Bur Clover Seed Pods 33 



Three General Types of Alfalfa Seed .... 44 



Dodder Seed Magnified 45 



Alfalfa Seed Magnified 45 



Dodder Plant on an Alfalfa Stem 46 



Dodder (Cuscuta arvensis) 47 



Alfalfa and Dodder Seed (Actual Size) ... 47 



Dodder (Cuscuta epithymum) .,,,,, 47 



