IQ20J 



CLAY BERG— UPLAND SOCIETIES 



53 



15. Harshberger, J. W., Ecologic study of flora of mountainous North 

 Carolina. Bot. Gaz. 36:368-383. 1903. 



16. Leverett, Frank, Outline of the history of the Great Lakes. 12th Rep. 

 Mich. Acad. Sci. 19-42. 1910. 



17. Leverett, F., and Taylor, F. B., Pleistocene of Indiana and Michigan. 

 Monograph 53. U.S. Geol. Surv. 1-529. 191 5. 



18. Livingston, B. E., Distribution of upland plant societies of Kent County, 

 Michigan. Bot. Gaz. 35:36-55. 1903. 



19. Moore, B., Reproduction in coniferous forests of northern New England. 

 Bot. Gaz. 64:149-148. 191 7. 



20. Ruthven, A. G., et al., Biological survey of sand dune region on the south 

 shore of Saginaw Bay, Michigan. Mich. Geol. and Biol. Surv. Pub. 4. 

 Biol. Ser. 2. 191 1. 



21. Schimper, A. F. W., Plant geography on a physiological basis. Rev. . 

 transl. Oxford. 1903. 



22. Sherff, E. E., Vegetation of Skokie Marsh. Bull. 111. State Lab. Nat. 

 Hist. 9:575-610. 1910. 



23. Sorauer, Paul, Handbuch der Pflanzenkrankheiten. Berlin. 1913. 



24. Transeau, E. N., Bog plant societies of Northern North America: their 

 geographic distribution and ecological relations. Bot. Gaz. 36:401-420. 

 1903. 



25. Whitford, H. N., Genetic development of the forests of northern Michigan. 



Bot. Gaz. 31:289-325. 1901. 



26. Yapp, R. H., Stratification in the vegetation of a marsh, and its relation to 

 evaporation and temperature. Ann. Botany 23:275-319. 1909. 



