INDEX 
A. ORIGINAL PAPERS AND NOTES. 
PAGE 
Arber, E. A. N.— On anew Pteridosperm possessing the Sphenopteris type of Foliage. With 
Plate VI 57 
and Parkin, J. — Studies on the Evolution of the Angiosperms. The 
Relationship of the Angiosperms to the Gnetales. With three Figures in the Text . 489 
Balls, W. L. — Temperature and Growth. With eleven Figures in the Text .... 557 
Boodle, L. A. — On the Occurrence of different Types of Hair in the Wallflower. With one 
Figure in the Text 714 
On the Production of Dwarf Male Prothalli in Sporangia of Todea. With 
Plate XVI 231 
Bower, F. O. — Note on Ophioglossum simplex, Ridley 327 
Brooks, F. T. — Observations on the Biology of Botrytis cinerea. With four Figures in the 
Text 479 
Bruschi, Diana — Researches on the Vitality and Self-digestion of the Endosperm of some 
Graminaceae .......... .... 449 
Burkill, I. H., see Willis, J. C. 
Campbell, D. H. — Studies on some Javanese Anthocerotaceae. II. With Plates IX and X 
and two Figures in the Text ........... 91 
The Embryo-Sac of Pandanus. Preliminary Note ..... 330 
Supplementary Note to * Studies on some Javanese Anthocerotaceae ’ . 330 
Davis, B. M. — Spore Formation in Derbesia. With Plates I and II ..... 1 
de Fraine, E., see PIill, T. G. 
Fraser, H. C. I. — Contributions to the Cytology of Humaria rutilans, Fries. With Plates 
IV and V 35 
and Welsford, E. J.- — Further Contributions to the Cytology of the 
Ascomycetes. With Plates XXVI and XXVII and a Figure in the Text . . . 465 
Gallagher, W. J. — The Cytology of Rhoeo discolor 1 1 7 
Gibbs, L. S. — Bio-histological Notes on some new Rhodesian species of Fuirena, Hesperantha, 
and Justicia. With Plates XI and XII and ten Figures in the Text .... 187 
Gibson, R. J. H. — A Photoelectric theory of Photosynthesis 117 
Gwynne-Vaughan, D. T. — On the Real Nature of the Tracheae in the Ferns. With Plate 
XXVIII 517 
Hill, A. W. — The Plistology of the Sieve-Tubes of Angiosperms. With Plates XVII and 
XVIII and thirteen Figures in the Text 245 
The Origin of Monocotyledons. With one Figure in the Text . . *713 
Hill, T. G., and de Fraine, E. — On the Seedling Structure of Gymnosperms. I. With 
Plate XXXV and eight Figures in the Text 689 
Jeffrey, E. C. — On the Structure of the Leaf in Cretaceous Pines. With Plates XIII 
and XIV 207 
Traumatic Ray-Traeheids in Cunninghamia sinensis. With Plate XXXI . 593 
Kauffman, C. H. — A Contribution to the Physiology of the Saprolegniaceae, with special 
reference to the Variations of the Sexual Organs. With Plate XXIII . . . 361 
Lewis, I. M. — The Behaviour of the Chromosomes in Pinus and Thuja. With Plates XXIX 
and XXX 529 
McNicol, M. — On Cavity Parenchyma and Tyloses in Ferns. With Plate XXV and seven 
Figures in the Text 401 
Olive, E. W. — Sexual Cell Fusions and Vegetative Nuclear Divisions in the Rusts. With Plate 
Parkin, J., see Arber, E. A. N. 
