312 THE BOTANISTS OF PHILADELPHIA. 



60. "Iron Wood, Hop-Hornbeam." VI : 40. 



61. " Tree Form and Tree Photography." VI : 72. 



62. "Caryatomentosa." VI : 88. 



63. "Rock Oak, Rock Chestnut Oak." VI : 104. 



64. "Pin Oak." VI : 121. 



65. "Red Maple." VI : 137. 



66. " Yellow Birch. " VI : 152. 



67. "Black Birch." VI : 16!). 



68. "The Red Spruce." VI : 184. 



69. "Honey Locust." VI : 201. 



70. "Swamp Magnolia," VII : 8. 



71. "Big White Oaks." VII : 24. 



72. "A Pennsylvania Sequoia." VII : 24. 



73. "The Black Spruce." VII : 40. 



74. "The Origin of Floral Structures. Review of Rev. George Hen - 

 slew's Book."- The American. 



75. " Some Observations on the Bahamas and Jamaica." Proceedings 

 A UK flea n Philosophical Society, XXIX : 145. 



76. "A Monstrous Specimen of Rudbeckia hirta. " Contributions Botan- 

 Laboratory University of Pennsylvania, I : 3. 



77. "A Nascent Variety of Brunella vulgaris." Contribution* Botanical 

 Laboratory University of Pennsylvania, I : 64. 



78. "A Rare Buttonwood." Garden and Forest, III : 69. 



79. "The Action of Root Hairs, Illustrated. '' Garden and Forest, 

 III : 94. 



80. " Poisonous Properties of the Leguruiuosse. " Proceedings Academy 

 of Natural Sciences, 1877, 274. 



81. "Relation of the Medullary Rays to the Strength of Timber." 

 J'rocecdings Academy of Natural Sciences, 1884, 14. 



82. " The Internal Cambium Ring in Gelsemium sempervireus. 2'ro- 

 <-dini/x Aeadi mi/ of Xatiiraf >SV/<w(.s, 1885, 22. 



83. "Mimicry Among Plants." Proceeding* Aeadi mi/ of Natural 

 Scieneis, 1888, 12. 



84. " Remarks on Death of Professor Asa Gray. " Pro ed'mg* Academy 

 of Natural K-ienees, 1888, 62. 



85. "The Sand Dunes of Lewes, Delaware. " Proceeding* Academy 

 of Xainrai s,-i, aces, 18s<), 134. 



