TABLE OF CONTENTS. vii 



XLIII. Contributions to a knowledge of the lichens of Minne- 

 sota. II. Lichens of Minneapolis and vicinity, by 



Bruce Fink 703 



XLIV. A re-arrangement of the North American Hyphomy- 

 cetes. II, by Roscoe Pound and Frederic E. 



Clements 726 



XLiV. On some mosses at high altitudes, by J. M. Holz- 



INGER 739 



XLVI. The forces determining the position of dorsiventral 



leaves, by R. N. Day 743 



XLVII. On the genus Coscinodon in Minnesota, by J. M. 



HOLZINGER 753 



XLVIII. Observations on the ferns and flowering plants of the 



Hawaiian Islands, by A. A. Heller 760 



XLIX. The phenomena of symbiosis, by Albert Schnei- 

 der 923 



Li. Observations on the distribution of plants along 

 shore at Lake of the Woods, by Conavay Mac- 



MlLLAN 949 



LI. The alkaloids of Veratrum, by Geo. B. Frank- 



FORTER 1024 



