Vlll. 
Page 
Sellards, E. H. 
S(mith), W. G. 
Stopes, M. C. 
Tansley, A. G. 
Thomas, E. N. 
Welsford, E. , 
Notes on the Spore-hearing Organ Codon- 
otlieca, and its Relationship with the 
Cycadofilices (Text-fig. 7) ... ... 175 
Central Committee for the Survey and 
Study of British Vegetation ... 103 
The Xerophytic Character of the Gymno- 
sperms. Is it an Ecological Adap¬ 
tation ? ... ... ... ... 46 
Lectures on the Evolution of the Filicinean 
Vascular System (Figs. 1-95)— 25 
53, 109, 135, 148, 187, 219, 253 
A Theory of the Double Leaf-trace founded 
on Seedling Structure (Text-figs. 
1-41 77 
Fertilization in Ascoboliis furfuraceus 
Pers. (Plate IV.) ... ... ... 156 
