Other Books by the same Author : 



Russian Waters, London : Arnold (193 1) 



The Isle of Auks, London : Arnold (1932) 



Botany of the Canadian Eastern Arctic : 



Part I, Pteridophyta and Spermatophyta, Ottawa : King's 

 Printer (1940) 



Part II, Thallophyta and Bryophyta (ed.), Ottawa : King's 

 Printer (1947) 



Part III, Vegetation atid Ecology, Ottawa : King's Printer (1948) 



Arctic Unfolding, London, etc. : Hutchinson (1949) 



Circunipolar Arctic Flora, Clarendon Press, Oxford (1959) 



Arctic Botany (3 vols.), Clarendon Press, Oxford (in Press) 



Editor of Plant Science Monographs, London : Leonard Hill; New 

 York: Interscience. 



General Editor of World Crops Books, London : Leonard Hill; New 

 York: Interscience. 



