ANNALS OF BOTANY, Vol. XXV. 
No. XCVII. January, 1911, contains the following Papers and Notes:— 
Oliver, F. W., and Salisbury, E. J.—On the Structure and Affinities of the Palaeozoic Seeds 
of the Conostoma Group. With Plates I—111 and thirteen Figures in the Text. 
Lee, E.—The Morphology of Leaf-fail. With Plates IV-VI and twenty Figures in the Text. 
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. 
Brenchley, W. E.—The Weeds of Arable Land in relation to the Soils on which they grow. 
Sinnott, E. W.—The Evolution of the Filicinean Leaf-trace. With Plate XI and eleven 
Figures in the Text. 
BERRY, E. W.—A Lower Cretaceous Species of Schizaeaceae from Eastern North America. 
With Plate XII and one Figure in the Text. 
Beer, R.—Studies in Spore Development. With Plate XIII. 
Eames, A. J.—On the Origin of the Herbaceous Type in the Angiosperms. With Plate XIV. 
Bailey, I. W.—The Relation of the Leaf-trace to the Formation of Compound Rays in the 
Lower Dicotyledons. With Plates XV-XVII and one Figure in fhe Tettt. 
Carruthers, D.—Contributions to the Cytology of Helvetia crispa, Fries. With Plates 
XVIII and XIX. 
Prankerd, T. L.—On the Structure and Biology of the Genus HcJttonia. With Plates XX 
and XXI and seven Figures in the Text. 
NOTES. 
Stopes, M. C.—A Reply to Prof. Jeffrey’s Article on Yezonia and Cryptomeriopsis. 
Schwartz, E. J.—A New Parasitic Fungus found in the Roots of Grasses.—Preliminary 
Notice. 
Osborn, T. G. B.—A Preliminary Note on the Life-history and Cytology of Spongospora 
subterranea, Wallroth. 
Horne, A. S.—Preliminary Note on Spongospora Solani, Brunch. 
Bentley, B. H.—An Arrangement for using the Blades of Safety Razors in the Microtome. 
With Three Figures in the Text. 
No. XCVIII. April, 1911, contains the following Papers and Note:— 
Bower, F. O.—Notes on the Morphology of Ophioglossum (Cheiroglossa) palmaturn, L. With 
Plates XXII-XXIV. 
Woodburn, W. L.—Spermatogenesis in certain Hepaticae. With Plate XXV. 
Bailey, I. W.—A Cretaceous Pityoxylon with Marginal Tracheides. With Plate XXVI. 
Osborn, T. G. B.—Spongospora subterranea, (Wallroth) Johnson. With Plate XXVII. 
Essed, E.—The Panama Disease. I. With Plate XXVIII. 
Essed, E.—The Panama Disease. II. With Plate XXIX. 
Essed, E.—The Surinam Disease. A Condition of Elephantiasis of the Banana caused by 
Ustilaginoidella oedipigera. With Plate XXX. 
Essed, E.— Rice Disease caused by Ustilaginoidella graminicola. With Plate XXXI. 
Spratt, E. R.—Some Observations on the Life-history of Anabaena Cycadeae. With 
Plate XXXII. 
Maslen, A. J.—The Structure of Mesoxylon Sutcliffii (Scott). With Plates XXXIII-XXXVI. 
Wilson, M.—Spermatogenesis in the Bryophyta. With Plates XXXVII and XXXVIII and 
three Figures in the Text. 
Scott, R.—On Traquairia. With Plates XXXIX and XL and four Figures in the Text. 
Yasui, K.—On the Life-history of Salvinia natans. With Plates XLI-XL1II and one Figure 
in the Text. 
Delf, E. M.—Transpiration and Behaviour of Stomata in Halophytes. With thirteen Figures 
in the Text. 
Armstrong, H. E. and E. F.—The Function of Hormones in regulating Metabolism. 
NOTE. 
Kusano, S.—Preliminary Note on Gastrodia elata and its Mycorhiza. 
