ANNALS OF BOTANY, Vol. XVIII. 
Contains the following Papers and Notes: — 
Lawson, A. A.— The Gametophytes, Arcbegonia, Fertilization, and Embryo of Sequoia semper- 
vivens. With Plates I-IV. 
Wac^er, H. — The Nucleolus and Nuclear Division in the Root-apex of Phaseolus. With Plate V. 
Worsdell, W. C. — The Structure and Morphology of the ( Ovule.’ An Historical Sketch. With 
twenty- seven Figures in the Text. 
Cavers, F.— On the Structure and Biology of Fegatella conica. With Plates VI and VII and five 
Figures in the Text. 
Potter, M. C. — On the Occurrence of Cellulose in the Xylem of Woody Stems. With Plate VIII. 
Williams, J. Lloyd. — Studies in the Dictyotaceae. I. The Cytology of the Tetrasporangium and 
the Germinating Tetraspore. With Plates IX and X. 
Benson, Miss M. — Telangium Scotti, a new Species of Telangium (Calymmatotheca) showing 
Structure. With Plate XI and a Figure in the Text. 
Williams, J. Lloyd.— Studies in the Dictyotaceae. II. The Cytology of the Gametophyte Genera- 
tion. With Plates XII, XIII, and XIV. 
Bower, F. O. — Ophioglossum simplex, Ridley. With Plate XV. 
Parkin, J. — The Extra-floral Nectaries of Hevea brasiliensis, Miill.-Arg. (the Para Rubber Tree), 
an Example of Bud-Scales serving as Nectaries. With Plate XVI. 
Church, A. H. — The Principles of Phyllotaxis. With seven Figures in the Text. 
Mottier, D. M. — The Development of the Spermatozoid in Chara. With Plate XVII. 
Weiss, F. E. — A Mycorhiza from the Lower Coal-Measures. With Plates XVIII and XIX and 
a Figure in the Text. 
Reed, H. S. — A Study of the Enzyme-secreting Cells in the Seedlings of Zea Mais and Phoenix 
dactylifera. With Plate XX. 
Vines, S. H. — The Proteases of Plants. 
Blackman, V. H. — On the Fertilization, Alternation of Generations, and general Cytology of the 
Uredineae. With Plates XXI-XXIV. 
Darbishire, O. V. — Observations on Mamillaria elongata. With Plates XXV and XXVI. 
Lawson, A. A. — The Gametophytes, Fertilization, and Embryo of Cryptomeria japonica. With 
Plates XXVII-XXX. 
Gregory, R. P. — Spore-Formation in Leptosporangiate Ferns. With Plate XXXI and a Figure in 
the Text. 
Massee, G. — A Monograph of the genus Inocybe, Karsten. With Plate XXXII. 
Boodle, L. A. — On the Occurrence of Secondary Xylem in Psilotum. With Plate XXXIII and 
seven Figures in the Text. 
Engler, A. — Plants of the Northern Temperate Zone in their Transition to the High Mountains 
of Tropical Africa. 
Trow, A. H. — On Fertilization in the Saprolegnieae. With Plates XXXIV-XXXVI. 
Lang, W. H. — On a Prothallus provisionally referred to Psilotum. With Plate XXXVII. 
Burns, G. P. — Heterophylly in Proserpinaca palustris, L. With Plate XXXVIII. 
Ford, Miss S. O. — The Anatomy of Psilotum triquetrum. With Plate XXXIX. 
Wolfe, J. J. — Cytological Studies on Nemalion. With Plates XL and XLI and a Figure in the Text. 
Ganong, W. F. — An undescribed Thermometric movement of the Branches in Shrubs and Trees. 
With six Figures in the Text. 
NOTES. 
Hemsley, W. Botting. — On the Genus Corynocarpus, Forst. Supplementary Note. 
Weiss, F. E. — The Vascular Supply of Stigmarian Rootlets. With a Figure in the Text. 
Ewart, A. J.— Root-pressure in Trees. 
Massee, G. — On the Origin of Parasitism in Fungi. 
Salmon, E. S. — Cultural Experiments with ‘ Biologic Forms’ of the Erysiphaceae. 
Oliver, F.W., and Scott, D. H.— On the Structure of the Palaeozoic Seed Lagenostoma Lomaxi, 
with a Statement of the Evidence upon which it is referred to Lyginodendron. 
Scott, D, H.— On the Occurrence of Sigillariopsis in the Lower Coal-Measures of Britain. 
Wigglesworth, Miss G. — The Papillae in the epidermoidal layer of the Calamitean root. With 
three Figures in the Text. 
Fritsch, F. E. — Algological Notes. No. 5 : Some points in the structure of a young Oedogonium. 
With a Figure in the Text. 
Pertz, D. F. M. — On the Distribution of Statoliths in Cucurbitaceae. 
Hill, T. G.— On the presence of a Parichnos in Recent Plants. 
