INDEX 
A. ORIGINAL PAPERS AND NOTES. 
PAGE 
Allen, Charles E. — The Spermatogenesis of Polytrichum juniperinttm. With Plates XV 
and XVI 269 
Arber, Agnes. — O n the Occurrence of Intrafascicular Cambium in Monocotyledons. With 
three Figures in the Text . 41 
Blackburn, Kathleen B. — On the Vascular Anatomy of the Young Epicotyl in some 
Ranalean Forms. With Plate XIII and nineteen Figures in the Text . . . 15 1 
Blackman, V. H., and Knight, R. C. — A Method of Controlling the Rate of Air Movement 
in Transpiration Experiments. With one Figure in the Text 217 
Bower, F. O. — Studies in the Phylogeny of the Filicales. VI. Ferns showing the ‘ Acrosti- 
choid ’ Condition, with special reference to Dipterid Derivatives. With Plates I and 
II and fifteen Figures in the Text . 1 
Brenchley, Winifred E. — Organic Plant Poisons. I. Hydrocyanic Acid. With three 
Figures in the Text 447 
Brierley, William B. — -Spore Germination in Onygena equina, Willd. . . . .127 
Bristol, B. Muriel. — O n the Life-history and Cytology of Chlorochytrium grande, sp. nov. 
With Plates V and VI and two Figures in the Text .107 
Brown, William. — S tudies in the Physiology of Parasitism. IV. On the Distribution of 
Cytase in Cultures of Botrytis cinerea .... ..... 4^9 
Curtis, K. M. — The Anatomy of the Six Epiphytic Species of the New Zealand Orchidaceae. 
With Plates VII-XII 133 
Ferguson, Allan, see Thomas, N. 
Holden, the late Ruth. — O n the Anatomy of Two Palaeozoic Stems from India. With 
Plates XVII-XX 315 
J0Rgensen, Ingvar, see Stiles, W. 
Kashyap, Shiv Ram. — N otes on Equisetum debile, Roxb. With three Figures in the Text . 439 
Kidd, Franklin, and West, Cyril. — T he Controlling Influence of Carbon Dioxide. 
IV. On the Production of Secondary Dormancy in Seeds of Brassica alba following 
Treatment with Carbon Dioxide, and the Relation of this Phenomenon to the Question 
of Stimuli in Growth Processes. With Plate XXIII and five Figures in the Text . 457 
Knight, R. C. — The Interrelations of Stomatal Aperture, Leaf Water-content, and Transpira- 
tion Rate. With four Figures in the Text 221 
* ‘ Relative Transpiration ’ as a Measure of the Intrinsic Transpiring Power 
of the Plant . 351 
see Blackman, V. H. 
Mangham, Sydney. — -O n the Mechanism of Translocation in Plant Tissues. An Hypothesis, 
with special reference to Sugar Conduction in Sieve-tubes. With two Figures in the 
Text . . £ 293 
Maybrook, A. C. — On the Haustoria of Pedicularis vulgaris, Tournef. With five Figures 
in the Text 499 
Obituary : 
H. H. W. Pearson, F.R.S., Sc.D. (Cambridge). With Plate i 
Pickering, Spencer. — T he Effect of one Plant on Another. With three Figures in the 
Text 181 
Piercy, Alma. — T he Structure and Mode of Life of a Form of Hormidium flaccidum, 
A. Braun. With three Tables and six Figures in the Text 513 
Potter, M. C. — Note on a Method of demonstrating the Heat of Respiration. With one 
Figure in the Text 435 
