INDEX OF SUBJECTS. 
Page 
Alga, On a new penetrating (Plate I and 2 Text-figs.)— 
Elizabeth Acton ... ... ... ... ... 97 
AlG/E, see Cladophora balls, Dicranochcete reniformis , A 
new penetrating alga, Algal ancestry of the higher 
plants. 
Algal ancestry of the higher plants, The (2 Text-figs.)— 
F. E. Fritsch ... ... ... ... ... 233 
Anatomy, see Molinia ccerulea, Nephrolepis. 
British Association at Newcastle, The meeting of the— 
E. N. Thomas ... ... ... ... ... 256 
Carbon assimilation, see under Jorgensen, Ingvar, and 
Stiles, Walter (Index of Authors). 
Carbon dioxide, see under Jbrgensen, Ingvar, and Stiles, 
Walter (Index of Authors). 
Chlorophyll, see under Jorgensen, Ingvar, and Stiles, Walter 
(Index of Authors). 
Cladophora balls, On the structure and origin of (5 Text- 
figs.)—Elizabeth Acton ... ... ... ... 1 
Coal, The natural history of a Siberian—M. D. Zalessky 200 
Compositae, Notes on the corolla in the (33 Text-figs.)— 
James Small ... ... ... ... ... 23 
Corolla, see Compositae. 
Dicranochcete reniformis Hieron., a freshwater alga new to 
Britain (1 Text-fig.)—W. J. Hodgetts ... ... 108 
Donaldson, Geoffrey Boles (Obituary, A.G.T.) ... ... 203 
Echeveria retusa Lindl., The Pollen of, as Laboratory 
Material (Laboratory Note)—M. Chevely Rayner 136 
Endotrophic Mycorhiza, Recent Developments in the study 
of—M. Chevely Rayner ... ... ... ... 161 
Fungi Imperfecti, Marine (5 Text-figs.)-Geo. K. Sutherland 35 
Gaseous exchange, see under Jorgensen, Ingvar, and Stiles, 
Walter. 
Herbarium Material, The Utilization of—R. C. McLean 103 
Laboratory Note, see lender Echeveria retusa. 
