ILLUSTRATIONS. 



PLATES. 



Page. 



Pi,. I. Fig. 1.— Tlie Real Red Desert. Fig. 2— Tli<> Greater Red Desert G8 



II. Fig. 1.— Point of Rocks, Bitter Creek Valley. Fig. 2.— The Ideal Sum- 

 mer Range 68 



III. Fig. 1. — Tetradymia sphwsa II. & A. Fig. 2. — Atni}hj- vohitans A.^e]». 68 



IV. Sheldon's Pdiie-grass ( I'oa sheldoni Vasey) 68 



V. Alkali Blue-grass (Poa jiincifoUa Scribu.) 68 



FIGURES. 



Fio. 1 . Western Wheat-grass {Agropyron splcatnm ) 26 



2. Indi.'iu Millet ( Eriocoma vuspidata) 27 



3. Switch-grass {Fanicum, rirgatum) 32 



4. Seneca-grass (Saraslaiui odorata) 33 



5. Mountain Foxtail {AJopectinis oceidentalh) 34 



6. Fine-top Salt-grass {SporoboliLs (lirohhs) 35 



7. Rough-leafed Salt-grass {Sporoholns axperifoUus) 36 



8. Sporoholns confusus 37 



9. Af/roslis h umilis 38 



10. Fnvi}\ish. Reed-grass (Calamagroul is piirj)nias<t7is) 38 



11. Slender Cord-grass {Spartiua yracUis) 39 



12. Slough-grass ( Hetlinanma erncaiform is) , 40 



13. Bulbous Melic-grass {Melica bulhosa) 41 



14. Bench-land Spear-grass ( Poa arida ) 41 



15. Nevada Bine-grass ( Poa veradensis ) 42 



16. Kentucky Bliu'-grass {]'oa pratetisis) 43 



17. Wyoming Blue-grass {Poa wheeleri) 44 



18. Nerved Manna-grass ( Panicidaria nervato ) 45 



19. King's Fescue ( Pestuca lingii) 46 



20. False Couch-grass (Agropyron pseudorepens) 47 



21. Elymus simplex 48 



22. Water Whorl-grass ( ( 'aiahrosa aqualica) 55 



23. Desert Rye-grass ( Plymns salin ns) 57 



24. Grease-wood {Sarcohatus verviicidat us) 60 



7 



