Illustrations. 



PLATES. 

 Plate— Paae^ 



1. Cypress (Taxodium distichum) in Posey County Frontispiece 



2. Successful contestants in forestry prize for 1911 37 



3. Annual mean temperature in Indiana 50 



4. Average date of last killing frost in spring 52 



5. Average date of first killing frost in autumn 53 



6. Average annual precipitation 56 



7. Pinus Strobus (White Pine) 98 



8. Pinus Banksiana (Gray or Jack Pine) 100 



9. Pinus virginiana (Scrub Pine) 102 



10. Larix laricina (Tamarack) 104 



11. Tsuga canadensis (Hemlock) 105 



12. Taxodium distichum (Cypress) 107 



13. Thuja occidentalis (Arbor-Vitae) 109 



14. Juniperus virginiana (Red Cedar) Ill 



15. Salix nigra (Black Willow) 114 



16. Salix amygdaloides (Peach-leaved Willow) 115 



17. Salix lucida (Shiny Willow) 117 



18. Salix alba (White Willow) 118 



19. Populus alba (Silver-leaf Poplar) 121 



20. Populus grandidentata (Large-toothed Aspen) 123 



21. Populus heterophylla (Large-leaved Cottonwood) 125 



22. Populus tremuloides (Quaking Asp) 126 



23. Populus deltoides (Cottonwood) 127 



24. Juglans nigra (Black Walnut) 131 



25 Juglans cinerea (Butternut) 133 



26. Hicoria Pecan (Pecan) 136 



27. Hicoria cordiformis (Pignut Hickory) 137 



28. Hicoria ovata (Shellbark Hickory) 140 



29. Hicoria laciniosa (Big Shellbark Hickory) 143 



30. Hicoria microcarpa (Small-fruited Hickory) 145 



31. Hicoria alba (White Hickory) 147 



32. Hicoria glabra (Black Hickory) 148 



33. Carpinus caroliniana (Blue or Water Beech) 151 



34. Ostrya virginiana (Ironwood) 153 



35. Betula lutea (Yellow Birch) 156 



36. Betula nigra (Water or Red Birch) 159 



37. Betula populifolia (Gray or White Birch) 161 



38. Betula papyrifera (Canoe Birch) 162 



39. Alnus incana (Tag Alder) 164 



40. Alnus rugosa (Alder) 166 



41. Fagus grandifolia (Beech) 167 



42. Castanea dentata (Chestnut) 170 



(7) 



