GENERAL INDEX. 151 
Weaver Plum, iv. 16. Xanthopicrite, i. 66. Yucca crenulata, x. 6. 
Weeping Beech, ix. 24. Xanthoxylum, i. 65 ; xiv. 97. Yucca, dissemination of, x. 3. 
Weeping Spruce, xii. 51. Xanthoxylum Americanum, i. 65. Yucca Draconis, x. 4, 7. 
Weevil, White Pine, xi. 11. Xanthorylum aromaticum, i. 67. Yucca Draconis, var. arborescens, x. 19. 
Wellingtonia, x. 139. Xanthoxylum brachyacanthum, i. 66. Yueca, economic properties of, x. 4. 
Wellingtonia gigantea, x. 145. Xanthoxylum Caribeum, i. 68, 71 ; xiv. 98. Yucca elata, x. 27. 
West India Birch, i. 97. Xanthoxylum Caribeeum, var. Floridanum, xiv. Yucca Ellacombei, x. 23, 25. 
Western Catalpa, vi. 89. 98. Yucca ensifolia, x. 25. 
Weymouth Pine, xi. 21. Xanthoxylum Carolini i, 67. Yuceea, fertilization of, x. 1. 
White Ash, vi. 43. Xanthoxylum Catesbianum, i. 67. Yucea fibre, x. 4. 
White Beam-tree, iy. 69. Xanthoxylum Clava-Herculis, i. 67. Yucea filamentosa, x. 4. 
White Birch, ix. 47, 55 ; xiv. 59. Xanthoxylum Clava-Herculis, xiv. 98. Xucca filamentosa 2, x, 15. 
White Buttonwood, v. 29. Xanthoxylum Clava-Herculis, var. frutico- Yucca filifera, x. 4. 
White Cedar, x. 111, 120, 126, 135. sum, i. 68. Yucca filifera, x. 13. 
White Cypress, x. 153, 154. Xanthoxylum cribrosum, i. 71; xiv. 98. Yucca, fungal diseases of, x. 5: 
White Elm, vii. 43, 48. Xanthoxylum cribrosum, xiv. 98. Yucca, germination of, x. 3. 
White Fir, xii. 117, 121, 125. Xanthoxylum elatum, i. 66. Yucca glauca, x. 25. 
White Heart Hickory, vii. 163. Xanthoxylum emarginatum, i. 65. Yueea gloriosa, x. 23. 
White Iron-wood, ii. 77. Xanthoxylum Fagara, i. 73. Yucca gloriosa acuminata, x. 23. 
White Mangrove, v. 29. Xanthoxylum flavum, xiv. 98. Yueea gloriosa, fructification of, x. 24, 
White Mulberry, vii. 76. Xanthocylum Floridanum, i. 71 ; xiv. 98. Yucca gloriosa glaucescens, x. 23: 
White Oak, viii. 16, 23, 29, 33, 71, 87, 89. Xanthoxylum fraxinifolium, i. 67. Yucca gloriosa maculata, x. 23. 
White Oak, Evergreen, viii. 83. Xanthoxylum hirsutum, i. 68. Yucca gloriosa marginata, x. 25. 
White Oak, Swamp, viii. 47, 63. Xanthoxylum nitidum, i. 66. Yucca gloriosa medio picta, x. 25. 
White Pine, xi. 17, 23, 33, 35, 39. Xanthoxylum piperitum, i. 66. Yucca gloriosa minor, x. 23. 
White Pine Weevil, xi. 11. Xanthoxylum Pierota, i. 78. Yucca gloriosa mollis, x. 23. 
White Poplar, ix. 154. Xanthoxylum Rhetsa, i. 74. Yucca gloriosa nobilis, x. 23, 24. 
White-spotted Tussock Moth, vii. 41. Xanthoxylum Sumach, xiv. 98. Yucca gloriosa nobilis parviflora, x. 23. 
White Spruce, xii. 37, 43. Xanthoxylum tricarpum, i. 67. Yucca gloriosa robusta, x. 23. 
White Stopper, v. 45. Xyleborus ccelatus, xii. 25. Yucca gloriosa tristis, x. 23. 
White Thorn, iv. 95. Xylodalea, iii. 33. Yucca gloriosa, var. Ellacombei, x. 23. 
White Willow, ix. 139. Xylosma nitidum, vii. 27. Yucca gloriosa, var. obliqua, x. 28. 
White Wood, vii. 25. Xyloterus bivittatus, xi. 11; xii. 25. Yueea gloriosa, var. plicata, x. 24. 
Whitewood, i. 37, 53. Yucca gloriosa, var. pruinosa, x. 23. 
Wild Ash, iv. 80. Yaupon, i. 111. Yucca gloriosa, var. superba, x. 24. 
Wild Black Cherry, iv. 45. Yellow Birch, ix. 53. Yucca gloriosa, var. tortulata, x. 23. 
Wild Cherry, iv. 37, 41 ; xiii. 25, Yellow Cypress, x. 115. Yueea gloriosa, var. y recurvifolia, x. 24, 
Wild China Tree, ii. 71. Yellow Haw, iv. 118 ; xiii. 161. Yucca gloriosa, var. 3 planifolia, x. 25. 
Wild Cinnamon, i. 37. Yellow Locust, iii. 39. Yucca Guatemalensis, x. 4. 
Wild Dilly, v. 183. Yellow Oak, viii. 55, 127, 139. Yucca Haruckeriana, x. 7. 
Wild Goose Plum, iv. 24. Yellow Pine, xi. 75, 77, 85, 143,156. ’ Yucca, hybrids of, x. 4. 
Wild Lime, i. 73. Yellow Poplar, i. 19. Yucca, insect enemies of, x. 5. 
Wild Orange, iv. 49. Yellow Wood, iii. 57. Yucca integerrima, x. 28. 
Wild Plum, iv. 19, 23, 31. Yellow-bark Oak, viii. 139. Yucca Japonica, x. 25. 
Wild Red Cherry, iv. 35. Yellow-wood, ii. 17. Yucca lineata lutea, x. 7. 
Wild Tamarind, iii. 129. Yew, x. 62, 65, 67. Yucca longifolia, x. 9. 
Willow, ix. 109, 119, 127, 129, 131, 135, 187, Yew, Florence Court, x. 62. Yueca macrocarpa, x. 13. 
145, 147, 149 ; xiv. 63, 67. Yew, Irish, x. 62. Yucca macrocarpa, x. 15, 17. 
Willow, Almond, ix. 111. Young Mastic, iii. 2. Yucea Mohavensis, x. 15. 
Willow, Bedford, ix. 99. Yucca, x. 1. Yucca Moth, x. 2. 
Willow, Black, ix. 103, 107, 113, 115,141. Yucca acuminata, x. 23. Yucca Moth, Bogus, x. 3. 
Willow, cultivation of, for basket-maki ig, Yucca ides, x. 10. Yucca, nectar glands of, x. 3. 
ix. 100. Yucca, aloifolia, x. 6. Yucea, nocturnal opening of the flowers of, 
Willow, Desert, vi. 95. Yucca aloifolia, var. 8 Draconis, x. 7. x. 2. 
Willow, Diamond, ix. 136. Yucca aloifolia, var. y conspicua, x. 7. Yucca obliqua, x. 23. 
Willow, Feltleaf, xiv. 65. Yucca angustifolia, B elata, x. 27. Yucca patens, x. 23. 
Willow, Glaucous, ix. 133. Yucca angustifolia, 8 radiosa, x. 27. Yucca pendula, x. 24. 
Willow Oak, viii. 179. Yucea arborescens, x. 19. Yucca pendula variegata, x. 25. 
Willow Oak, Upland, viii. 172. Yucca arcuata, x. 6. Yucca, pollination of, x. 2. 
Willow, Peach, ix. 111. Yucca aspera, x. 9. Yucca polyphylla, x. 27. 
Willow, Sand-bar, ix. 123, Yucca Atkinsi, x. 7. Yucca pruinosa, x. 28. 
Willow, Shining, ix. 121. Yucca australis, x. 4, 18. Yucca puberula, x. 17. 
Willow, White, ix. 139. Yucca baceata, x. 16. Yucca purpurea, x. 7. 
Wine, Birch, ix. 47. Yucea baccata, x. 18, 15, 17. Yucca quadricolor, x. 7. 
Winged Elm, vii. 51. Yucca baccata, B australis, x. 4, 13. Yucca radiosa, x. 28. 
Winterania, i. 35. Yucca baccata, var. macrocarpa, x. 13. Yucca recurva, x. 24. 
Winterania Canella, i. 37. Yucca Boerhaavii, x. 23. Yueca r curvifolia, x. 24. 
Wislizenia, vi. 94. Yucca brevifolia, x. 19. Yueea, zeflexion of the leaves of, x. 1. 
Wislizenus, Friedrich Adolph, vi. 94. Yucca canaliculata, x. 9. Yucca revoluta, x. 10. 
Witch Hazel, v. 3. Yucca Carrierei, x. 4. Yucca rufocincta, x. 24. 
Woodhouse, Samuel Washington, viii. 88. Yucca concava, x. 10. Yucea Schottii, x. 17. 
Wool, Pine, xi. 3. Yucca conspicua, x. 7. Yucca serrata, y argenteo-marginata, x. 7, 
Wright, Charles, i. 94. Yucca. constricta, x. 27, Yucca serrata, 8 roseo-marginata, x. 7. 
Wych Elm, vii. 40. Yucca cornuta, x. 10. Yucca serrulata, x. 6. 
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