234 THE FOEESTS OF PEINCE GEOEGe's COUXTY 



34. White Elm TJlmus americana (Linne) . 



35. Hackberry Celtis occidentalis (Linne) . 



36. Red Mulberry Morus ruira (Linne). 



37. Sweet Magnolia Magnolia glauca (Linne). 



38. Yellow Poplar Liriodendron tuJipifera (Linne). 



39. Pawpaw Asimina triloba (Linne) Dunal. 



40. Sassafras Sassafras sassafras (Linne) Karst. 



41. Witch Hazel Hamamelis virginiana (Linne)- 



42. Red Gum Liquidambar styraciflua (Linne). 



43. Sycamore Platanus occidentalis (Linne). 



44. Service-berry Amelanchicr canade?isis (Linne) Medic. 



45. Scarlet Haw Crataegus coccinea (Linne). 



46. Washington Haw Crataegus cordata (Mill). 



47. Black Cherry Primus serotina (Ehrh. ). 



48. Red-bud Cercis canadensis (Linne). 



49. Locust Robinia pseudacacia (Linne). 



50. Holly Ilex opaca (Ait.). 



51. Silver Maple Acer saccharinum (Linne). 



52. Red Maple Acer rubrum (Linne). 



53. Basswood Tilia americana (Linne). 



54. Dogwood Cornus florida (Linne). 



55. Black Gum Nyssa sylvatica (Marsh). 



56. Persimmon Diospyros virginiana (Linne). 



57. Black Ash Fraxinus nigra (Marsh). 



58. White Ash Fraxinus americana (Linne). 



59. Red Ash Fraxinus pennsylvanica (Marsh) . 



60. Nannyberry Viburnum prunifolium (Linne) . 



The Impoetaxt Commeecial Teees. 



Tlie Oah. — Of the fourteen species of oak found in the county 

 only white, red, black, and pin oak are of much importance. Of 

 these, white oak is more common as well as being of much greater 

 value. It occurs on all soils, and is freqitently found in almost pure 

 stands. Large trees are in demand for saw timber, the best of which 

 go into bridge plank, car stuif and wagon stock; smaller trees are 

 cut into railroad ties. 



Red oak saw timber from large, sound, straight-grained trees makes 

 excellent furniture wood and is substituted to some extent for white 

 oak. Onl^^ occasional trees are found, hoAvever, that are of suffi- 

 ciently good quality to produce valuable timber. Since it is a much 



