Vlll 
Index . 
PAGE 
Newcombe, F. C. — The Cause and Conditions of Lysigenous Cavity- 
formation 403 
Peirce, G. J. — A Contribution to the Physiology of the Genus 
Cuscuta. (With Woodcut 1, and Plate VIII) . . . 53 
Pfeffer, W. — Geotropic Sensitiveness of the Root-tip . . . 317 
Reeves, Jesse. — See Farmer. 
Seward, A. C. — On Rachiopteris Williamsoni, sp. nov., a New Fern 
from the Coal-Measures. (With Plate XIII) . . . 207 
Spalding, V. M. — The Traumatropic Curvature of Roots. (With 
Plate XXII) 423 
Strasburger, E. — The Periodic Reduction of the number of the 
Chromosomes in the Life-History of Living Organisms . . 281 
Wager, H. — On the Presence of Centrospheres in Fungi. (With 
Plate XVII) 321 
Watson, W. — Absorption of Water by Dead Roots . - . .119 
Williams, J. Lloyd. — The Sieve-tubes of Calycanthus occidentalis. 
(With Woodcut 2) 367 
Worsdell, W. C. — See Boodle. 
Wright, C. H.— -On the Double Flower of Epidendrum vitellinum, 
Lindl. (With Plate XXIII) 453 
B. LIST OF ILLUSTRATIONS. 
a . Plates. 
I, II. 
Ill, IV, V. 
VI, VII. 
VIII. 
IX, X, XI, XII. 
XIII. 
XIV. 
XV, XVI. 
XVII. 
XVIII. 
XIX. 
XX, XXI. 
XXII. 
XXIII. 
XXIV. 
On Marattia Douglasii (Campbell). 
Fertilization of Pinus silvestris (Dixon). 
On Pallavicinia decipiens (Farmer). 
Physiology of Cuscuta (Peirce). 
Anatomy of Selaginella (Gibson). 
Rachiopteris Williamsoni (Seward). 
Centrospheres in Pellia epiphylla (Farmer and Reeves). 
Anatomy of Casuarineae (Boodle and Worsdell). 
Centrospheres in Fungi (Wager). 
New Marine Algae (Holmes). 
Euglenopsis (Davis). 
Notothylas (Mottier). 
Traumatropic Curvature of Roots (Spalding). 
Double Flower of Epidendrum vitellinum (Wright). 
Two Irish Brown Algae (Johnson). 
b . Woodcuts. 
1. Physiology of Cuscuta^ (P eirce) 66 
2. Sieve-tubes of Calycanthus (Williams) ...... 368 
3-5. Apospory and Production of Gemmae in Trichomanes Kaulfussii 
(Bower) 466-7 
