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CONTRIBUTIONS 
Contributions by members of the staff or students of the 
Garden, reprinted during the year from other than Garden 
publications, are as follows: 
No. roo. Scandinavians Who Have Contributed to the 
Knowledge of the Flora of North America, by Per Axel 
Rydberg. 
No. 1o1. Phycological Studies — 11]. Further Notes on 
Halimeda and Avrainvillea, by Marshall Avery Howe. 
No. 102. Mosses from Tropical America, by Robert 
Statham Williams. 
No. 103. Alabastra philippinensia, by Charles Budd 
Robinson. 
No. 104. Studies in the North American Convolvulaceae 
—IV. The Genus Zxogonium, by Homer Doliver House. 
No. 105. The Taxonomic Aspect of the Species Question, 
by Nathaniel Lord Britton. 
No. 106. The Genus Zruodea: A Study of Species and 
Races, by Nathaniel Lord Britton. 
No. 107. Further Studies of Solution Tension and Tox- 
icity in Lipolysis, by Raymond H. Pond. 
No. 108. Studies of West Indian Plants—I, by Nathaniel 
Lord Britton. 
No. rog. A Study of the Digestive Power of Sarracenia 
purpurea, by Winifred J. Robinson. 
No. 110. Additional Philippine Polyporaceae, by William 
Alphonso Murrill. 
No. 111. Boleti from Western North Carolina, by William 
Alphonso Murrill. 
No. 112. Notes on Philotria, by Per Axel Rydberg. 
No. 113. Some Notes on Chemical Composition and Tox- 
icity of Jbervillea Sonorae, by Julia T. Emerson and William 
H. Welker. 
No. 114. The Boleti of the Frost Herbarium, by William 
A. Murrill. 
No. 115. Some North Dakota Hypocreales, by Fred J. 
Seaver. 
