36 Proceedings of the Royal Physical Society. 
5. GEIKIE, J. On the Buried Forests and Peat Mosses of Scotland and the 
Changes of Climate which they Indicate, 7’rans. Roy. Soc. Hdin., xxiv., 1867 ; 
also his Great Ice Age, Prehistoric Hurope, and other writings. 
Lewis, F. J. The History of the Scottish Peat Mosses and their relations to 
the Glacial Period, Scot. Geograph. Mag., 1906 ; and other papers. 
6. GRAEBNER, P. Die Heide Norddeutschlands, 1901, Leipzig. 
7. Kenpati, Dean and Ranking. On the Geographical Distribution of Mollusca 
in South Lonsdale, The Naturalist, 1909. See also the recently published 
Moorlands of North-Hast Yorkshire, by Frank Elgee, where there are interest- 
ing chapters on the fauna of the moorland. This book has only come into 
my hands since this paper was passed for the press. 
8. Apams, Cuas. C. Isle Royale as a Biotic Environment, An. Rep. Wich. Geol. 
Survey, 1905; and other papers. 
SHELFORD, Victor E. Ecological Succession: Vegetation and the Control of 
Land Animal Communities, Biol. Bull, vol. xxiii., No. 2, July 1912; and 
other papers. 
(Issued separately, 22nd April 1918.) 
