Box Rack for Feeding Alfalfa to Cattle 107 38. Trocar and Cannula 119 39. Alfalfa Field in Central New York 124 40. Fourth Cutting of Alfalfa in Shawnee County, Kansas 124 41. A Second Cutting of Alfalfa (July 28) in Shawnee County, Eastern Kansas 125 42. Kansas Farmer Viewing One of His Alfalfa Fields 138 43. Harvesting Alfalfa in Ohio 139 44. Showing Advantage of Early Fall Sowing 154 45. Five-year-old Alfalfa 155 46. Alfalfa One Year Old, Showing Effects of Inoculation 170 47. A Good Type of a Four-year-old Alfalfa Plant 171 48. Alfalfa Plant and Roots Showing Bacteria Nodules 196 49. Tubercles on Clover Roots 197 50. Peculiar Nodules in Groups on Small Rootlets 206 51. Alfalfa Roots Showing Normal Nodules 207 52. Gopher Poisoning Tool 214 53. And There’s Still More to Follow 220 54. Dead Prairie Dogs 221 55. Pot Culture Experiments at University of Illinois 230 56. Six Months’ Growth of Alfalfa Foliage 231 57. Cutting Alfalfa in Southern California 256 58. Baling Alfalfa in Southern Oklahoma 256 59. A 400-ton Rick of Alfalfa 257 60. A Cable Derrick, Provided with a Grapple Fork 257 61. Sweet Clover (_Melilotus alba_) 288 62. Yellow Trefoil (_Medicago lupulina_) 289 [Illustration: =A Typical Alfalfa Plant= as it appears before the blossoms are developed. From Michigan Experiment Station Bulletin No. 225] [Illustration: =Typical Stems and Foliage of the Alfalfa Plant= when beginning to blossom the most suitable for hay. Grown in Shawnee County, Kansas, on unirrigated upland prairie with a “gumbo” or hardpan subsoil. From the season’s third cutting, August 20; height 24 and 26 inches] ALFALFA (_Medicago sativa, Linn._) _CHAPTER I._ History, Description, Varieties and Habits HAS ALWAYS BEEN KNOWN