INDEX 
A. ORIGINAL PAPERS AND NOTES. 
PAGE 
Arber, Agnes. — O n the Leaf Structure of certain Liliaceae, considered in Relation to the 
Phyllode Theory. With thirty- eight Figures in the Text 447 
Bailey, M. A.— Puccinea malvacearum and the Mycoplasm Theory. With two Figures in 
the Text . • > • • • I 73 
Barratt, Kate. — A Contribution to our Knowledge of the Vascular System of the Genus 
Equisetum. With Plates VI and VII and twenty-four Figures in the Text . . 201 
Benson, M.* — Cantheliophorus, Bassler : New Records of Sigillariostrobus (Mazocarpon) . 135 
Bergman, H. F. — The Relation of Aeration to the Growth and Activity of Roots and its 
Influence on the Ecesis of Plants in Swamps. With three Graphs in the Text . . 13 
Bews, J. W. — Plant Succession and Plant Distribution in South Africa 287 
Bexon, Dorothy. — O bservations on the Anatomy of Teratological Seedlings. II. On the 
Anatomy of some Polycotylous Seedlings of Centranthus ruber. With nine Figures 
in the Text 81 
Blackman, V. H. — Radio-activity and Normal Physiological Function 299 
Boodle, L. A. — The Mode of Origin and the Vascular Supply of the Adventitious Leaves of 
Cyclamen. With six Figures in the Text 43 1 
Bottomley, W. B. — The Growth of Lemna Plants in Mineral Solutions and in their Natural 
Medium 345 
The Effect of Organic Matter on the Growth of various Water Plants in 
Culture Solution. With Plate XVII . 353 
Bristol, B. Muriel. — O n the Alga-Flora of some Desiccated English Soils : an Important 
Factor in Soil Biology. With Plate II and twelve Figures and three Tables in the 
Text 35 
On the Gemmae of Tortula mutica, Lindb. With five Figures in the 
Text . 135 
Browne, Isabel M. P. — A Third Contribution to our Knowledge of the Anatomy of the Cone 
and Fertile Stem of Equisetum. With Plates VIII and IX and seven Figures in the 
Text . 237 
Campbell, D. H.— Studies in some East Indian Hepaticae. Calobryum Blumei, N. ab E. 
With Plate I and six Figures in the Text 1 
Carter, Nellie. — S tudies on the Chloroplasts of Desmids. III. With Plates X-XIII and 
two Figures in the Text ............ 265 
Studies on the Chloroplasts of Desmids. IV. With Plates XIV-XVI . 303 
Dastur, Jehangir Fardunji. — T he Mode of Infection by Smut in Sugar-cane. With ten 
Figures in the Text ............. 391 
Choanephora cucurbitarum, (B. and Rav.) Thaxter, on 
Chillies (Capsicum spp.). With Plate XIX 399 
Drummond, Montagu. — B esleria lutea, Linn., a New Example of Water-calyx . . . 551 
Ferdinandsen, C., and Winge, O.-^Clathrosorus, a New Genus of Plasmodiophoraceae. 
With Plate XXI 467 
Ghose, S. L. — A New Species of Uronema from India. With fifteen Figures in the Text . 95 
Hill, Arthur W. — Studies in Seed Germination. Experiments with Cyclamen. With Plate 
XX and fifteen Figures in the Text . . . . . . ... . 417 
Hodgetts, William J.— A New Species of Spirogyra. With Plate XXII and five Figures 
in the Text 
519 
