C, Effects of the Physical Character of the Bark on 



the Distribution of the fern 51-53 



D.Discussion of Influences affecting the Distribution 

 of the Epiphytes studied 53-59 



V. PHYSIOLOGICAL STUDIES 60-79 



1, Methods of experimentation 60-65 



(a) Relative water loss from the surface of the 



leaf 62-63 



(b) Water-absorbing power of the leaves of the/ 

 fern 62-63 



(c) Influence of the loss of v/ater on the internal 

 structure of the leaf 64-65 



2. Results 65-72 



S^Physiological significance of the scales to the 



leaf 72-76 



4, Relation of v;ater- content of leaf to leaf- 

 movement , 76-80 



VI. HISTOLOGICAL STUDIES 81-82 



VII. GENERAL SUlfiCARY 82-84 



BIBLIOGRAPHY 85-87 



Vita .88 



