LABORATORY 1 



LIBRARY I 



CONTENTS |-^^^^^LE,MASSr 

 Preface I W. H. 0- 1- \ ix 



WATER AND WATER MOVEMENT 

 IN THE ENVIRONMENT 



Climatic Diagrams as a Means to Comprehend the Various 

 Climatic Types For Ecological and Agricultural 

 Purposes 3 



H.Walter, Botanisches Institut, Stuttgart-Hohenheim, West Germany 



Potential Water Dehcit as a Climatic Discriminant io 



F.H.W. Green, Speyside Research Station, Nature Conservancy, 

 Achantoul, Aviemore, Invernesshire, Scotland 



The Role of Evaporation in the Surface Energy Balance 19 



M.J. Blackwell, Meteorological Office, Agricultural Research Unit, 

 School of Agriculture, University of Cambridge 



Dew: Facts and Fallacles 37 



J.L. Monteith, Rothamsted Experimental Station, Harpenden, Herts. 



The Effect of Dissolved Salts on Water Movement 57 



D.A. Rose, Rothamsted Experimental Station, Harpenden, Herts. 



Model Tests on the Ecological Effect of Vapour 



Movement in Soil due to Temperature Gradients 65 



W.R. MuUer-Stoll & G. Lerch, Botanisches Institut, Padagog. 



Hochschule, Potsdam, East Germany 



PHYSIOLOGICAL STUDIES OF WATER BALANCE 

 AND MOVEMENT IN PLANTS 



The Pathway of Water Movement Across the Root Cortex 



and Leaf Mesophyll of Transpiring Plants 85 



P. E. Weatherley, Botany Department, University of Aberdeen, 



Scotland 



