Oliver, F. W., and Salisbury, E. J.- — On the Structure and Affinities of 
the Palaeozoic Seeds of the Conostoma Group. With Plates I— III and 
thirteen Figures in the Text i 
Lee, E. — The Morphology of Leaf-fall. With Plates IV-VI and twenty 
Figures in the Text . .51 
Butler, O.—A Study on Gummosis of Prunus and Citrus, with Observations 
on Squamosis and Exanthema of the Citrus. With Plates VII-X 
and three Figures in the Text 107 
Brenchley, W. E. — The Weeds of Arable Land in relation to the Soils 
on which they grow 155 
Sinnott, E. W. — The Evolution of the Filicinean Leaf-trace. With 
Plate XI and eleven Figures in the Text 167 
Berry, E. W. — A Lower Cretaceous Species of Schizaeaceae from Eastern 
North America. With Plate XII and one Figure in the Text . . 193 
Beer, R. — Studies in Spore Development. With Plate XIII . . . 199 
Eames, A. J. — On the Origin of the Herbaceous Type in the Angiosperms. 
With Plate XIV 215 
Bailey, I. W.— The Relation of the Leaf-trace to the Formation of Com- 
pound Rays in the Lower Dicotyledons. With Plates XV-XVII and 
one Figure in the Text . . „ ..... 225 
Carruthers, JD. — Contributions to the Cytology of Helvella crispa, Fries. 
With Plates XVIII and XIX 243 
Prankerd, T. L. — On the Structure and Biology of the Genus Hottonia. 
With Plates XX and XXI and seven Figures in the Text . . . 253 
NOTES. 
Stopes, M. C. — A Reply to Prof. Jeffrey’s Article on Yezonia and 
Cryptomeriopsis 269 
Schwartz, E. J. — A New Parasitic Fungus found in the Roots of 
Grasses. — Preliminary Notice 270 
Osborn, T. G. B.— A Preliminary Note on the Life-history and 
Cytology of Spongospora subterranea, Wallroth .... 271 
Horne, A. S. — Preliminary Note on Spongospora Solani, Brunch. . 272 
Bentley, B. H. — An Arrangement for using the Blades of Safety 
Razors in the Microtome. With three Figures in the Text . . 273 
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