ILLUSTRATIONS. 



rage. 

 Plate I. Fig. 1. — Slat-shade field, showing Iron cowpeas as grown be- 

 tween tobacco crops. Pig. 2. — Leaf of tobacco, showing 

 "white veins," caused by the tobacco thrips (Euthrips nico- 



tiana;) 6 



II. Fig. 1. — Slat-shade tobacco field, showing seed bed. Fig. 2. — 



Cheesecloth-sbade tobacco field, showing seed bed : 16 



TEXT FIGURES. 



Fig. 1. The tobacco thrips (Euthrips nicotiance) : adult 8 



2. Diagram showing total monthly precipitation at Tallahassee, Fla., 

 during April, May, June, and July, 1000-1906, to illustrate rela- 

 tion of rainfall to amount of injury by the tobacco thrips 15 



