Ill 
Page 
Fossil Plants by A. C. Seward [Review] —W.N.E(dwards) 277 
Freshwater Algae, Notes on, I—IV (2 Text-figs.)— 
W. J. Hodgetts ... ... ... ... ... 254 
Geotropic Curvature in the Stem, On the Reversal of—- 
J. Small and M. W. Rea ... ... ... ... 208 
Geotropic Response, see Geotropism. 
Geotropism, A Theory of, with some Experiments on the 
Chemical Reversal of Geotropic Response in Stem 
and Root (Plate 1 and 5 Text-figs.)—James Small 49 
Geotropism, see Hydrion, Differentiation Theory of. 
Heliotropism, Preliminary Note on a Hydrion Differen¬ 
tiation Theory of—J. Small . 275 
Hybridism and Classification in the Genus Rosa — 
J. R. Matthews ... ... ... ... ... 153 
Heliotropism, Preliminary Note on a Hydrion Differentia¬ 
tion Theory of—J. Small ... ... ... ... 275 
Hydrion Differentiation Theory of Geotopism, Preliminary 
Notes on Additional Evidence for the—J. Small, 
M. W. Rea and M. J. Lynn ... ... 208, 209, 211 
Hydrion Differentiation Theory of Heliotropism, 
Preliminary Note on a—James Small ... ... 275 
Improved Method for Demonstrating the Absorption of 
Oxygen in Respiration, On an [Laboratory Note] — 
A. W. Bartlett . ... ... 151 
International Sequence, see Plant Families. 
Internodal Vascular Strands, see Equisetum . 
Leaves, see Angle of Balance in. 
Leaves, A Theory of the Origin of (3 Text-figs.)—J. Small 
211 
Mechanism of Root Pressure, The (2 
J. H. Priestley . 
Text-figs.)— 
189 
Methods and Significant Relations in the Quantitative 
Analysis of Plant Growth—C. West, G. E. Briggs, 
and F. Kidd. 
200 
Mutations and Evolution—R. Ruggles Gates 
Chap. I and II ... 
... 
26 
„ II and III ... 
... ... 
64 
„ IV and V ... 
... 
132 
„ VI ... 
... 
172 
„ VII — XII ... 
... ... 
213 
Mycorhiza, see Endotrophic. 
