APPENDIX 245 



Strasburger, E., Noll, F., Schenck, H., and Karsten, G., Translated by W. H. 

 Lang: A Text-book of Botany. New York: The Macmillan Co., 

 1908, $5.00. 

 Underwood, L. M. : (1) Our Native Ferns and their Allies. New York: 

 Henry Holt & Co., 1881 and later, $1.00. 

 (2) Molds, Mildews, and Mushrooms. New York: Henry Holt & 

 Co., 1899, $1.50. 

 Vines, S. H. : ( 1 ) Lectures on the Physiology of Plants. Cambridge : 

 University Press, 188G, $5.00. 

 (2) Elementary Text-book of Botany. New Y^ork: The Macmillan 

 Co., 1898, $2.25. 

 Waters, C. E.: Ferns. A ISIanual of the Northeastern States. New Y^ork: 

 Henry Holt & Co., 1903, $3.00. 



