THE BOTANISTS OF PHILADELPHIA. 311 



He has been & 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. " 11:67. 



30. "Pinus rigida on the Dunes at Cape Henlopen." 11:83. 



31. "Along the Coast North ward." 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. "Nyssasylvatica." VI : 8. 



