Index. 
Hill, Arthur W. — Studies in Seed Germination. The Genus Marah (Megarrhiza), Cucurbi- 
taceae. With Plate V and two Figures in the Text ....... 
Hind, Mildred. — S tudies in Permeability. III. The Absorption of Acids by Plant Tissue. 
With eleven Figures in the Text .......... 
Holden, PI. S. — Further Observations on the Wound Reactions of the Petioles of Pteris 
aquilina. With four Figures in the Text ......... 
Jeffrey, Edward C., and Cole, Ruth D. — Experimental Investigations on the Genus 
Drimys. With Plate VII . . 
Knight, R. C. — On the Use of the Poromeler in Stomatal Investigation. With seven Figures 
in the Text .............. 
see Laid law, C. G. P. 
Laidlaw, C. G. P., and Knight, R. C. — A Description of a Recording Porometer and 
a Note on Stomatal Behaviour during Wilting. With three Figures in the Text 
Leitch, I. — Some Experiments on the Influence of Temperature on the Rate of Growth in 
Pisum sativum. With Plate I and ten Figures in the Text . . . . . 
Obituary : 
David TH'omas Gwynne-Vaughan. With Portrait i 
Alfred Stanley Marsh xxv- 
Paine, Sydney G. — On the Supposed Origin of Life in Solutions of Colloidal Silica. With 
Plate IX ....... ........ 
Prelatory Note to two Unpublished Papers by the late Professor D. T. Gwynne-Vaughan 
Ridley, H. N. — On Endemism and the Mutation Theory ....... 
Rushton, W. — The Development of ‘ Sanio’s Bars ’ in Pinus Inops. With four Figures in 
the Text ............... 
Salisbury, E. J. — On the Relation between Trigonocarpus and Ginkgo . . . . 
Variations in Anemone nemorosa. With three Figures in the Text . 
see de Fraine, E. 
Sampson, K. — The Morphology of Phylloglossum Drummondii, Kunze. With five Figures 
in the Text - 
■ Note on a Sporeling of Phylloglossum attached to a Prothallus. W T ith two 
Figures in the Text 
Small, James. — A nomalies in the Ovary of Senecio vulgaris, L. With three Figures in the 
Text 
Smith, Gilbert Morgan. — Cytological Studies in the Protococcales. I. Zoospore Formation 
in Characium Sieboldii, A. Br. With Plate XI and two Figures in the Text . 
— Cytological Studies in the Protococcales. II. Cell Structure 
and Zoospore Formation in Pediastrum Boryanum (Turp.), Menegh. With Plate XII 
and lour Figures in the Text ........... 
Stapledon, R. G. — On the Plant Communities of Farm Land ...... 
tiles, Walter. — O n the Interpretation of the Results of Water Culture Experiments . 
Stopes, Marie C. — An Early Type of the Abietineae (?) from the Cretaceous of New Zealand. 
With Plate IV and seven Figures in the Text ........ 
Sutherland, Geo. H., and Eastwood, A. — The Physiological Anatomy of Spartina Town- 
sendii. With seven Figures in the Text ......... 
Takeda, H. — Dysmorphococcus variabilis, gen. et sp. nov. With fifteen Figures in the Text 
Scourfieldia cordiformis, a New Chlamydomonad. With five Figures in 
the Text ............... 
Some Points in the Morphology of the Stipules in the Stellatae, with special 
reference to Galium. With twenty-seven Figures in the Text ..... 
On Carteria P'ritschii, sp. nov. With ten Figures in the Text 
• Some Points in the Morphology of the Stipules in the Stellatae, with special 
reference to Galium. (Additional Note.) With seven Figures in the Text 
see Fritsch, F. E. 
Welsford, E. J. — Conjugate Nuclei in the Ascomycetes. With four Figures in the Text 
see Blackman, V. H. 
West, Cyril. — S tigeosporium marattiacearum, gen. et sp. nov. ...... 
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