Vlll 
Index . 
PAGE 
Weiss, F. E. — A Mycorhiza from the Lower Coal-Measures. With Plates XVIII and XIX 
and a Figure in the Text 255 
The Vascular Supply of Stigmarian Rootlets. With a Figure in the Text . 180 
Wigglesworth, Miss G. — The Papillae in the epidermoidal Layer of the Calamitean Root. 
With three Figures in the Text 645 
Williams, J. Lloyd. — Studies in the Dictyotaceae. I. The Cytology of the Tetrasporangium 
and the Germinating Tetraspore. With Plates IX and X . . . . .141 
Studies in the Dictyotaceae. II. The Cytology of the Gametophyte 
Generation. With Plates XII-XIV 183 
Wolfe, J. J. — Cytological Studies on Nemalion. With Plates XL and XLI and a Figure in 
the Text 607 
Worsdell, W. C. — The Structure and Morphology of the ‘ Ovule.’ An Historical Sketch. 
With twenty-seven Figures in the Text -57 
a. Plates. 
I-IV. 
V. 
VI, VII. 
VIII. 
IX, X. 
XI. 
XII-XIV. 
XV. 
XVI. 
XVII. 
XVIII, XIX. 
XX. 
XXI-XXIV. 
XXV, XXVI. 
XXVII-XXX. 
XXXI. 
XXXII. 
XXXIII. 
XXXIV-XXXVI. 
XXXVII. 
XXXVIII. 
XXXIX. 
XL, XLI. 
B. LIST OF ILLUSTRATIONS. 
Sequoia sempervirens (Lawson). 
Root-apex of Phaseolus (Wager). 
Fegatella (Cavers). 
Cellulose in Woody Stems (POTTER). 
Dictyotaceae (Lloyd Williams). 
Telangium Scotti (Benson). 
Dictyotaceae (Lloyd Williams). 
Ophioglossum simplex (Bower). 
Hevea brasiliensis (Parkin). 
Spermatozoid of Chara (MotTier). 
Mycorhiza from Coal-Measures (Weiss). 
Enzyme-secreting cells (Reed). 
Uredineae (Blackman). 
Mamillaria (Darbishire). 
Cryptomeria japonica (Lawson). 
The Reduction-division in Ferns (Gregory). 
Characters of Hymenium in Inocybe (MASsee). 
Psilotum (Boodle). 
Fertilization in Saprolegnieae (Trow). 
Prothallus referred to Psilotum (Lang). 
Proserpinaca palustris (Burns). 
Psilotum (Ford). 
Nemalion (Wolfe). 
1 . Figures. 
1-27. 
28-32. 
33 * 
34 * 
35 - 41 * 
42. 
43 * 
44-50. 
5 i* 
52 - 57 * 
58-60. 
61. 
The Structure and Morphology of the Ovule (Worsdell) 59, 62, 72, 73, 76-78 
The Structure and Biology of Fegatella conica (Cavers) 99, 102, 106, 109 
Telangium affine (Benson) 164 
The Vascular Supply of Stigmarian Rootlets (Weiss) . . . .181 
The Principles of Phyllotaxis (Church) . 229, 230, 232-234, 237, 239 
A Mycorhiza from the Lower Coal-Measures (Weiss) .... 258 
Diagrams of the Reduction-division in Cyclops (Gregory) . . . 454 
On the Occurrence of Secondary Xylem in Psilotum (Boodle) . . 509 
Cytological Studies in Nemalion (Wolfe) . . . . . .619 
Thermometric Movement of Branches in Shrubs and Trees (Ganong) 
632, 634, 635, 638, 640 
Papillae in the epidermoidal Layer of the Calamitean Root (Wiggles- 
worth) 645-647 
Some points in the Structure of a young Oedogonium (Fritsch) . .651 
