VI 
Index. 
PAGE 
Le Goc, M. J. — Observations on the Centripetal and Centrifugal Xylems in the Petioles of 
Cycads. With Plate XI and one Figure in the Text 183 
Lee, E. —Observations on the Seedling Anatomy of Certain Sympetalae. II. Compositae. 
With eleven Diagrams and two Figures in the Text ....... 303 
Marsh, A. S. — The Anatomy of some Xerophilous Species of Cheilanthes and Pellaea. With 
eleven Figures in the Text ........... 671 
Mottier, David M. — Mitosis in the Pollen Mother-cells of Acer negundo, L., and Staphylea 
trifolia, L. With Plates IX and X 115 
Murphy, Paul A. — Morphology and Cytology of the Sexual Organs of Phytophthora erythro- 
septica, Pethyb. (Preliminary Note) 735 
Paine, S. G., see Blackman, V. H. 
Poulton, Ethel M. — The Structure and Life-history of Verrucaria margacea, Wahl., an 
Aquatic Lichen. With Plates XIII and XIV 241 
Price, S. Reginald. — Some Studies on the Structure of the Plant Cell by the Method of 
Dark-ground Illumination. With Plates XLI and XLII 601 
Priestley, J. H., see Knight, R. C. 
Reed, T. — The Nature of the Double Spireme in Allium Cepa. With Plates XVIII and 
XIX 271 
Robinson, Wilfrid. — Some Experiments on the Effect of External Stimuli on the Sporidia 
of Puccinia malvacearum (Mont.). With seven Figures in the Text .... 331 
Salisbury, E. J. — On the Structure and Relationships of Trigonocarpus Shorensis, sp. nov. 
A New Seed from the Palaeozoic Rocks. With Plates IV and V and eight Figures 
in the Text .............. 39 
Schwartz, <E. J. — The Plasmodiophoraceae and their Relationship to the Mycetozoa and 
the Chytrideae. With Plate XII . 227 
Sinnott, Edmund W. — Some Jurassic Osmundaceae from New Zealand. With Plate 
XXXVII 471 
and Bailey, Irving W. — Investigations on the Phylogeny of the 
Angiosperms : No. 4. The Origin and Dispersal of Herbaceous Angiosperms. With 
Plates XXXIX and XL and eight Diagrams in the Text 547 
Stopes, Marie C. — A New Araucarioxylon from New Zealand. With Plate XX and three 
Figures in the Text ............. 341 
Thomas, E. N. — Seedling Anatomy of Ranales, Rhoeadales, and Rosales. With Plates L 
and LI and forty-three Figures in the Text ........ 695 
Watson, D. M. S. — On the Structure and Origin of the Ulodendroid Scar. With Plate 
XXXVIII and two Figures in the Text 481 
Welsford, E. J. — The Genesis of the Male Nuclei in Lilium. With Plates XVI and XVII . 265 
Winge, O., see Ferdinandsen, C. 
Worsdell, W. C. — The Morphology of the ‘ Corona’ of Narcissus. With three Figures in 
the Text 541 
a. Plates. I, II. 
III. 
IV, V. 
VI-VIII. 
IX, X. 
XI. 
XII. 
XIII, XIV. 
XV. 
XVI, XVII. 
B. LIST OF ILLUSTRATIONS. 
Myxomycete Capillitium (Harper and Dodge). 
Embryo of Helminthostachys (Lang). 
Trigonocarpus Shorensis (Salisbury). 
Seed Impressions (Arber). 
Mitosis in Pollen Mother-cells (Mottier). 
Cycadean Petioles (Le Goc). 
Plasmodiophora (Schwartz). 
Verrucaria (Poulton). 
Medullosa centrofilis (de Fraine). 
Male Cells in Lilium (Welsford). 
