436 APPENDIX. 



Darwin, The Power of Movement in Plants. D. Appleton & 

 Co., New York. 



Darwin, Cross and Self Fertilization in the Vegetable King- 

 dom. D. Appleton & Co., New York. 



Warming, Oekologische Pflanzengeographie. Gebriider Born- 

 trager, Berlin. 



Papers by Macmillan in the Bulletin of the Torrey Botanical 

 Club and Minn. Bot. Studies, by Shaler in the 6th, loth, and 

 1 2th Annual Reports of the United States Geological Survey, 

 and by Ganong in Trans. Roy. Soc. Canada, sec. ser. vol. 3, 

 189798, should be consulted by those interested in ecology. 



Where materials cannot be readily collected in the region for 

 class use, they can often be purchased of supply companies. 



The Cambridge Botanical Supply Co., Cambridge, Mass., 

 supplies plant material of several groups for study, as well as 

 apparatus and paper. 



The Ithaca Botanical Supply Co., Ithaca, N. Y., will supply 

 plants for study in various groups, and upon order will prepare 

 permanent slides for demonstration of the more difficult topics, 

 such as the structure of the sexual organs of liverworts, mosses, 

 ferns, etc. 



