X 
Index . 
PAGE 
Trow, A. H. — Observations on the Biology and Cytology of Pythium 
ultimum, n. sp. (With Plates XV and XVI) . . . 269 
Vines, S. H— On Leptomin 181 
The Proteolytic Enzyme of Nepenthes (III) . . 563 
Waller, A. D. — An Attempt to estimate the Vitality of Seeds by an 
Electrical Method . . 427 
Ward, H. M. — The Bromes and their Rust- fungus (Puccinia dispersa) 560 
Watson, W. — Germination o Seeds of Bertholletia excelsa. (With 
Plates IV and V) . 99 
Worsdell, W. C. — The Morphology of the ‘ Flowers ’ of Cephalo- 
taxus. (With Plate XXXV) 637 
— The Vascular Structure of the 1 Flowers 1 of the 
Gnetaceae. (With a Figure in the Text) .... 766 
B. LIST OF ILLUSTRATIONS. 
a . Plates. 
I, II. 
III. 
IV, V. 
VI. 
VII. 
VIII, IX. 
X, XI. 
XII, XIII, XIV, 
XV, XVI. 
XVII, XVIII. 
XIX, XX, XXI. 
XXII. 
XXIII, XXIV, xxv. 
XXVI. 
XXVII. 
XXVIII. 
XXIX. 
XXX. 
XXXI, xxxii, xxxiil 
XXXIV. 
XXXV. 
XXXVI. 
XXXVII. 
XXXVIII, XXXIX. 
XL. 
Conducting Tissue-System in Bryophyta (Tansley 
and Chick). 
Solenostelic Ferns. I. Loxsoma (Gwynne-Vaughan). 
Germination of Bertholletia (Watson). 
Embryo-Sac of Peperomia (Campbell). 
Bulgaria polymorpha (Biffen). 
Infranodal Organs (Jeffrey). 
Nuclear Studies on Pellia (Davis). 
Pollen-tube of Pines (Ferguson). 
Pythium ultimum (Trow). 
Coprophilous Fungi (Massee and Salmon). 
Anatomy of Schizaeaceae (Boodle). 
Morphological Notes. I. (Thiselton-Dyer). 
Fertilization in Pinus (Ferguson). 
Tubers in Dioscorea (Dale). 
Apospory in Anthoceros (Lang). 
Cordyceps ophioglossoides (Lewton-Brain). 
Traumatic Reaction of Leaves (Blackman and 
Matthaei). 
Morphological Notes. II and III (Thiselton-Dyer). 
Sieve-Tubes of Pinus (A, W. Hill). 
Starchrformation in Hydrodictyon (TlMBERLAKE). 
Cephalotaxus (Worsdell). 
Fertilization of Pythium (Miyake). 
Diplodia cacaoicola (Howard). 
Anatomy of Glejcheniaceae (Boodle). 
Morphological Notes, IV (Thiselton-Dyer). 
h . Figures in Text. 
1. Parnassia palustris (Burkill). 
2, 3. Phyllotaxis (Church), 
4, 5, 6, 7, 8. Traumatic Reaction of Leaves (Blackman and Matthaei). 
9. Transpiration-apparatus (Hall). 
10. Vascular Structure of Gnetaceae (Worsdell). 
