LIST OF ILLUSTRATIONS 



FIGURE PAGE 



1. Distribution of hay and forage in the United States . . 6 



2. Distribution of cattle in the United States 1 dot equals 



1000 head. Compare distribution with that of forage 



in Fig. 1 8 



3. Ligule of a grass leaf ........ 14 



4. Spikelet of orchard-grass 14 



5. A single floret of orchard-grass 14 



6. Noxious weed seeds found in farm seeds (No. 1) : a, Sand 



bur; b, wild oat; c, chess; d, darnel; e, quack-grass; 

 f, dock ; g, black bindweed; h, Russian thistle ; i, corn 

 cockle ; j, white campion ; k, bladder campion ; 1, night- 

 flowering catchfly ; m, cow cockle ; n, pennycress : o, 

 field peppergrass ; p, large-fruited false flax ; q, small- 

 fruited false flax; r, ball mustard; s, black mustard; 

 t, English charlock 77 



7. Noxious weed seeds found in farm seeds (No. 2) : a, Indian 



mustard; b, hare's ear mustard; c, tumbling mustard; 

 d, wild carrot; e, field bindweed; f, flax dodder; g, 

 clover dodder ; h, small-seeded alfalfa dodder ; i, field 

 dodder ; j, large-seeded alfalfa dodder ; k, corn grom- 

 well ; 1, rat-tail plantain ; m, buckhorn ; n, ragweed ; 

 0, gum weed; p, wild sunflower; q, oxeye-daisy ; r, Can- 

 ada thistle ; s, bull thistle ; t, wild chicory ... 79 



8. Map showing percentage of cultivated land in forage crops 



1909-1910 116 



9. Timothy (Phleum pratense} : a, glumes ; b, floret with 



glumes removed . . . . . . . 123 



10. Timothy. Florets showing the different parts . . . 123 



11. Distribution of timothy 1909-1910. Figures equal acres . 124 



12. Kentucky blue-grass (Poa pratensis} : a, spikelet ; b, lemma, 



showing attached tuft of hairs ..... 155 



