234 BOTANICAL GAZETTE [MARCH 
18. Dana, S. T., Paper birch in the northeast. U.S. Dept. Agric. Forest 
Service, Circular 163. 1909 
1g. Davis,C.A., Peat: Essays on its ae ak uses, and distribution in Michigan. 
Mich. Geol. Surv. Ann. Rep. 1906 (1 
20. FERNow, B. E., An analysis of Canada’s s ee wealth. Forestry Quart. 
6:337-353- I 908. 
. Funk, Bruce, The lichens of Minnesota. Contrib. U.S. Nat. Mus. 14: 
ras 69+xvi. I9Q10. 
22. Forest SERVICE, U.S., The white spruce. Silvical Leaflet 15. 1908. 
23. Foster, J. W., and WuItNey, J. D., Report on the geology and topography 
of a portion of the Lake Superior land district, in the state of Michigan. 
Exec. Doc., 1st Sess., 31st Cong. g:pt. 1. 1850 
Rie on the geology of the take Supeciue land district. Pt. II, 
the ion region. Sen. Doc., Spec. Sess., 32d Cong. 3:1851. Contains a 
list of plants of the Upper Penasals by W. D. Wurtney, including some 
from Isle Royale. 
25. Fox, W. F., The Adirondack black spruce. Ann. Rep. N.Y. Forest 
Comm. 1895. 
26. Ganonc, W. F., Preliminary outline for a plan for a study of the precise 
factors dpveccining the features of New Bru age vegetation. Bull. 
Nat. Hist. Soc. New Brunswick 17:127-130. 18 
, A preliminary synopsis of the grouping ee the vegetation (phyto- 
ography) of the province of New Brunswick. Bull. Nat. Hist. Soc. 
New Brunswick 21:47-60. 1902. 
, The nascent forest of the Miscou beach plain. Bort. Gaz. 42:81- 
106. 1906. 
29. GLEason, H. A., The ecological relations of the invertebrate fauna of Isle 
Royale. In Apaus 4. 
30. Graves, H. S., This study of natural reproduction of forests. Forestry 
Quart. 6:115-137. 1908. 
31. GREEN, S. B., Forestry in Minnesota. St. Paul. 190 
32. HARSHBERGER, J. W., An ecological study of the ‘ick of mountainous 
North Carolina. Hor. GAZ. 32:241-258, 368-383. 1 
33- Hott, W. P., Notes on the vegetation of Isle Royale, Mich., and annotated 
list of slants. In ADAMS 4. I909. 
34. Howe, C. D., The reforestation of sand plains in Vermont. Bor. Gaz. 
49: 126-148. IgI0. 
35. KNECHTEL, A. Apo reproduction in the Adirondack Soctatic Forestry 
Quart. 1:50-55. 190. 
36. Lang, A. C., Geolany a Isle Royale. Geol. Surv. Mich. 6:pt. 1. 1898. 
37. Livrncston, B. E., The relation of soils to natural vegetation in Roscom- 
mon and Crawford counties, Michigan. Bor. Gaz. 39:22-41. 1905. 
38. MacMurray, C., On the occurrence of sphagnum atolls in central Minne- 
sota. Minn. Bot. Stud. Bull. 9. 1893. 
24. 
27: 
28. 
