Index. 
viii 
PAGE 
Scott, D. H. — On Medullosa anglica : a new Representative of the 
Cycadofilices 183 
On the Primary Wood of certain A raucarioxylons . . .615 
Seward, A. C. — The Structure and Affinities of Matonia pectinata . 319 
The Jurassic Flora of Britain . . . . . . .610 
A New Genus of Palaeozoic Plants . . . . . .612 
Snow, Miss J. W. — Pseudo-Pleurococcus, Nov. gen. (With Plate XI) 189 
Sturch, H. H. — Harveyella mirabilis. (With Plates III and IV) . 83 
Thiselton-Dyer, Sir W. T. — On the Influence of the Temperature of 
Liquid Hydrogen on the Germinative Power of Seeds . . 599 
Trow, A. H. — Observations on the Biology and Cytology of a new 
variety of Achlya americana. (With Plates VIII-X) . . 13 1 
De Vries, H. — On Biastrepsis in its Relation to Cultivation . . 395 
Wager, Harold. — The Sexuality of the Fungi 575 
Ward, H. Marshall. — Thames Bacteria, III. (With Plates XII- 
XIV) 197 
Symbiosis 549 
Some Methods for use in the Culture of Algae. (With Plate 
XXVIII) 563 
Williams, J. Lloyd. — New Fucus Hybrids 187 
Worsdell, W. C. — Observations on the Vascular System of the 
Female ‘ Flowers ’ of Coniferae. (With Plate XXVII). . 527 
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, XXV, XXVI. 
XXVII. 
XXVIII. 
XXIX. 
Portrait of Charles Darwin (Frontispiece). 
Symbiotic Saprophytism (Macdougal). 
Harveyella mirabilis (Sturch). 
The Genus Fissidens (Salmon). 
Achlya americana (Trow). 
Pseudo-Pleurococcus (Snow). 
Thames Bacteria (Ward). 
Actinococcus and Phyllophora (Darbishire). 
Prothallus of Lycopodium (Lang). 
Effect of Centrifugal Force on Cell (Mottier). 
Fat-Destroying Fungus (Biffen). 
Anatomy of Ophioglosseae (Boodle). 
Helminthostachys zeylanica (Farmer and Freeman). 
Cell-Division (Harper). 
Female ‘Flowers’ of Coniferae (Worsdell). 
Culture of Algae (Ward). 
Geotropism (Darwin). 
b . Woodcuts. 
1. Symbiotic Saprophytism (Macdougal). 
1-7. Actinococcus and Phyllophora (Darbishire). 
1. Petrospongium Berkeleyi (Hanna). 
