LIST OF ILLUSTRATIONS 



1. Part of an Oat Plant, showing the Absence of Clasps . . 2 



2. A Panicle of Oats , . . . . 3 



3. Oak Spikelet in Bloom. (L. H. Bailey) .... 4 



4. Spikelets of Red Rust-proof Oats 7 



5. A Panicle of Red Rust-proof Oats 8 



6. Burt Oats 10 



7. Spikelets of Burt Oats 11 



8. Oats destroyed by Smut 23 



9. Green-bug (Toxoptera gram in um). (S. J. Hunter) . . 25 



10. Two Stages of a Lady-bug which destroys Green-bugs. 



(S. J. Hunter) 25 



11. Oats and Wheat grown with Crimson Clover. (Alabama 



Experiment Station) ........ 27 



12. Part of a Young Wheat Plant 34 



13. Floret of Wheat. (L. H. Bailey) ./ ... 35 



14. A Head, Spikelet, and Grain of Bearded Wheat ... 36 



15. A Typical Head of Beardless Wheat . . . ', .37 



16. A Good Sample of Wheat. (California Experiment Station) 38 



17. Heads of Wheat 41 



18. Heads of Wheat 42 



19. Shocks of Wheat from Equal Areas. (Alabama Experiment 



Station) 49 



20. Double-disk Grain Drill . . . .. 4 . . . 54 



21. Loose Smut of Wheat . . . ..... .62 



22. The Angoumois Grain-moth. (W. E. Hinds) ... 63 



23. Heads of Southern Rye . . . . . ... 69 



24. Part of a Young Rye Plant, showing the Small Clasps of the 



Leaves .......... 70 



25. A Mixture of Rye and Crimson Clover . . . . . 72 



26. Ergot in a Head of Rye. (L. H. Bailey) . . . . 73 



xix i 



