Descriptions of the Weed-seeds Illustrated on opposite page. 



1.. Green Fox-Tail. About one- twelfth of an inch long ; oval with 

 blunt ends ; unequally bi-eonvex ; brown and often mottled ; surface 

 granular and striate. 



2. Chess. About one-third of an inch long ; back rounded ; glume 

 7-nerved ; middle nerve projecting as an awn ; the plate bears a row 

 of spine-like hairs along each nerve. 



3. Wild Oat. About three-fourths of an inch long; spindle-shaped; 

 glume 9-nerved, middle nerve forming a twisted and bent awn ; a 

 tuft of brownish hairs arise from scar at base. 



4. Couch Grass. Seeds about one-half inch in length ; rather 

 slender ; oval ; and tipped with a short awn. 



5. Curl Dock. One-eighth to one- twelfth of an inch long ; pointed 

 elliptical, with three faces ; surface smooth ; reddish brown. 



6. Sheep Sorrel. Seeds about one-twentieth of an inch in length ; 

 usually greyish or reddish brown, and finely roughened ; provided 

 with three equal faces, egg-shaped, each face of the cover of the seed 

 bears central ridges with branches. 



7. Lamb's Quarters. Circular, lens-shaped, and black ; grooved on 

 one face ; often partially covered with the seed covering. 



8. Purslane. One-twenty-fourth to one-twenty-fifth of an inch 

 in diameter ; jet black ; flattened egg-shaped ; notches at smaller end ; 

 surface finely roughened, 



9. Corn Cockle. Seeds from one-twelfth to one-eighth of an inch 

 long ; angular in outline ; color jet black, occasionally dark brown ; 

 each surface is crowded with ridges or spines arranged in circular 

 rows leading from the scar. 



