LIST OF ILLUSTRATIONS. vii 



Fig. Page. 



42. Extra large hazel seedling or round English filbert, . 136 



43. Filbert orchard struck with blight, fifth year from seed, . 137 



44. Hazel fungus, . . ... . 141 



45. Fourteen-years-old pecan tree in Mississippi, . . .154 



46. Leaf and sterile catkins of shellbark hickory, . .156 



47. Western shellbark, . . 158 



48. Section Western shellbark, . '. . . . 158 



49. Leaf of pignut, . . .... . . .161 



50. Bitternut branch and leaf, . . . , . 163 



51. Bitternut, . . . . . . . .164 



52. Large, long pecan nut, . . . . . . . 166 



53. Oval pecan nut, . . . . . . . 166 



54. Small oval pecan nut, ...... 167 



55. Little Mobile pecan nut, ' .' . . . ^ 167 



56. Stuart pecan nut, . . . . . . ^ 169 



57. Van Deman pecan nut, . :; . .... 169 



58. Risien pecan nut, ...... 169 



59. Lady Finger pecan nut, ; . . . .169 



60. The original Hales' Paper-shell hickory tree, . . 171 



61. Hales' hickory, ...... .172 



62. Section of Hales' hickory, . . 172 



63. Long shellbark hickory, ... . 173 



64. Shellbark Missouri, . . . ".. 173 



65. Long Western shellbark, . . .... 174 



66. Fresh Nussbaumer hybrid, . i x . ... 175 

 G7. Nussbaumer's hybrid, . . . . . . .176 



68. Crown grafting on roots of the hickory, . . 189 



69. Sprouts from severed hickory roots, . .- .190 



70. The hickory-twig girdler, . ... 196 



71. Hickory borer, . . . . . - I 98 



72. Burrows of hickory scolytus, . . 



73. Persian walnut, showing position of sexual organs, . . 204 



74. Bearing branch of English walnut, . . 



75. Seedling walnut, . . " . . 216 



76. Flute budding, . . . 



77. Flowering branch of hybrid walnut, . . > 228 



78. Hybrid walnut, . . . 



79. Hybrid walnut, shell removed, . . * 23 



80. Jnglans Siebolcliana raceme, . _. 



81. Black walnut in husk, . 232 



82. Juglans nigra, husk removed, . . 



83. Juglans Californica. . . . 235 



84. Juglan j rupestris, showing small kernel, 



85. Juglans Sieboldiana, 



86. Juglans cordiformis, . 



87. Small fruited walnut, . 24 J 



88. Barthere walnut, . 



89. Chaberte walnut, 24 ^ 



90. Chile walnut, ... 



91. Cut-leaved walnut, 



92. Gibbous walnut, . .... 



93. Mayette walnut, . 2 1 * 5 



