THE BOTANISTS OF PHILADELPHIA. 311 



He has been a constant contributor to Forest Leaves^ the 

 official organ of the Pennsylvania Forestry Association, as 

 follows : 



26. '* Tree Growth as Determined by Location." II : 18. 



27. "The Chestnut Tree." II : 35. 



28. " Brandy wine Banks above the Ford." 11:50. 



29. ' ' Concerning Our Sassafras Trees. " II : 67. 



30. " Pinus rigida on the Dunes at Cape Henlopen." II : 83. 



31. "Along the Coast Northward." II : 99. 



32. "The Row Farm Walnut Tree." II : 133. 



33. " Red Cedar, Savin." II : 148. 



34. "Mangroves." Ill : 5. 



35. " The Old Field or Loblolly Pine." Ill : 25. 



36. " The Tulip Poplar, or Poplar Tree." Ill : 85. 



37. "The Button wood." IV : 5. 



38. "The Over Cup Oak." IV : 22. 



39. " The Black Walnut." IV : 38. 



40. "Our Shell-bark Hickory." IV : 56. 



41. "The Persimmon." IV : 72. 



42. "The Forest Primeval." IV : 88. 



43. "The American, or White Elm." IV : 104. 



44. "The White Ash." IV : 120. 



45. "White Pine." IV : 152. 



46. "The Hemlock." IV : 169. 



47. "River Birch." IV : 185. 



48. "Fire and Flood." V : 8. 



49. "The Rock Oak." V : 25. 



50. "The Beech." V : 40. 



51. "The Sugar Maple." V : 56. 



52. "The Locust Tree." V : 72. 



53. "The Bitter Nut Hickory." V : 89. 



54. " The Swamp White Oak." V : 104. 



55. "The American Linden." V : 136. 



56. " Red Pine, Norway Pine." V : 152. 



57. " Silver Maple, White Maple, Soft Maple." V : 168. 



58. "Kentucky Coffee Tree." V : 184. 



59. " Nyssa sylvatica. " VI : 8. 



