Xll ILLUSTRATIONS 



FIO. PAOa 



39. Distribution of Crab-grass. Each dot representing a 



correspondent reporting this grass important . 186 



•40. Distribution of Carpet-grass 188 



41. Plat of Bluestem {Agropyron occidentale) in Grass- 



garden at Washington, D. C. (United States De- 

 partment of Agriculture) igo 



42. Seaside Blue-grass {Poa macrantha), near Astoria, 



Oregon. Protecting sand-dune from erosion by 



the wind 195 



43. Typical View on Ranges of the West. Showing Ely- 



mus condensatus in low alkaline soil . . . 199 



44. Greensward in Public Gordens, Boston, Mass. . 212 



45. Lawn-mowers, or Turf-makers, in Druid Hill Park, 



Baltimore, Md. ....... 213 



46. Varieties of Timothy 230 



47. Varieties of Timothy ....... 231 



48. Improved Varieties of Brome-grass .... 233 



49. Penicillaria, or Pearl Millet 235 



50. A Spike 237 



51. A Spikelet 237 



52. A Panicle 239 



53. Parts of a Single Floret 241 



54. Showing Action of Pollen 241 



