230 BIBLIOGRAPHY 



Liverworts and Mosses 

 Gray, see 46. 



43. Grout. Mosses with Hand-Lens and Microscope. Published by the 



author, 360 Lenox Road, New York City, 1903-1906. $3.75. 

 Campbell, see 23. 

 Ferns and Fern Allies 

 Gray, see 46. 



44. Underwood. Our Native Ferns and Their Allies. Henry Holt & 



Company, New York, 1899. $1.00. 



45. Clute. The Fern Allies of North America North of Mexico. 



Frederick A. Stokes & Company, New York, 1905. $2.00. 

 Campbell, see 23. 

 Seed Plants 



46. Gray. Manual of Botany of the Northern United States. American 



Book Company, New York. 



47. Gray, Watson, Robinson. Synoptical Flora of North America. A 



monographic treatment of I,' Gamopetaloe (Smithsonian Institu- 

 tion, 1886, $2.50); II, Polypetalce, Vol. I, Fas. 1 and 2, Rantin- 

 culacese to Polygalaceae (American Book Company, $5.20). 



48. Britton. Flora of the Northern States and Canada. Henry Holt & 



Company, New York. $2.25. 



49. Gray. Field, Forest, and Garden Botany. American Book Com- 



pany, New York, 1895. $1.44. 



50. Sargent. Manual of the Trees of North America (exclusive of 



Mexico). Houghton, Mifflin & Company, Boston, 1905. $6.00. 



51. Chapman. Flora of the Southern United States. American Book 



Company, 1897. $3.60. 



52. Coulter. Manual of Rocky Mountain Botany. American Book 



Company, New York, 1885. $1.62. 



ECOLOGY AND PLANT GEOGRAPHY 



56. Schimper-Fisher. Plant Geography. Clarendon Press, Oxford, 



1903. $14.00. 



57. Warming-Graebner. Oekologische Pflanzengeographie. Gebriider 



Borntraeger, Berlin, 1902. Marks 8. 



58. Pound and Clements. Phytogeography of Nebraska. University of 



Nebraska, Lincoln, Nebraska, 1900. $2.00. 



59. Clements. Research Methods in Ecology. University Publishing 



Company, Lincoln, Nebraska, 1905. $3.00. 



