vi Index. 
Wilson, M.— Spermatogenesis in the Bryophyta. With Plates XXXVII and XXXVIII and 
three Figures in the Text ........... 
Woodburn, W. L. — Spermatogenesis in certain Ilepalicae. With Plate XXV . 
Yasui, K. — On the Life-history of Salvinia natans. With Plates XLI-XLII 1 and one Figure 
in the Text 
B. LIST OF ILLUSTRATIONS. 
a. Plates. I, II. Conostoma oblongum (Oliver and Salisbury). 
III. Conostoma anglo-germanicum (Oliver and Salisbury). 
IV-VI. Leaf-fall (Lee). 
VII-X. Gummosis (O. Butler). 
XI. Filicinean Leaf-trace (Sinnott). 
XII. Schizaeopsis expansa (Berry). 
XIII. Spore-development (Beer). 
XIV. Herbaceous Type in Dicotyledons (Fames). 
XV-XVII. Compound Rays in Dicotyledons (BaiLey). 
XVIII, XIX. Helvella crispa (Carruthers). 
XX, XXI. Hottonia (Prankerd). 
XXII-XXIV. Ophioglossum (Bower). 
XXV. Spermatogenesis in Hepaticae (Woodburn). 
XXVI. Pityoxylon (Bailey). 
XXVII. Spongospora subterranea (Osborn). 
XXVIII. Panama Disease, I (Essed). 
XXIX. Panama Disease, II (Essed). 
XXX. Surinam Disease (Essed). 
XXXI. Rice Disease (Essed). 
XXXII. Anabaena Cycadeae (Spratt). 
XXXIII-XXXVI. Mesoxylon Sutcliffii (Maslen). 
XXXVII, XXX VIII. Spermatogenesis m Mosses and Liverworts (Wilson). 
XXXIX, XL. Traquairia (R. Scott). 
XLI-XLIII. Salvinia natans (Yasui). 
page 
b. Figures. i. Plottings of sections of Conostoma oblongum on vertical diagram 
(Oliver and Salisbury) 6 
2. Plottings of Conostoma oblongum on transverse diagram (Oliver 
and Salisbury) 7 
3. Restorations of Conostoma oblongum (Oliver and Salisbury) . 8 
4. Testa of Conostoma oblongum cut obliquely (Oliver and Salisbury) 10 
5. Restoration of the lagenostome of Conostoma oblongum (Oliver 
and Salisbury) . 17 
6 Sculptured cells of lagenostome of Conostoma oblongum (Oliver 
and Salisbury) 18 
7. Restorations of the plinth and contents (Oliver and Salisbury) . 21 
8. Longitudinal and transverse plottings of Conostoma anglo-germani- 
cum (Oliver and Salisbury) 25 
9. Vertical restorations of Conostoma anglo-germanicum (Oliver and 
Salisbury) 26 
10. Transverse restorations of Conostoma anglo-germanicum (Oliver 
and Salisbury) 
PAGE 
415 
299 
469 
2 7 
