CONTENTS. 
: PAGE 
Snow, J.W. — Pseudo-Pleurococcus, Nov. gen. (With Plate XI.) . . 189 
Ward, H. M. — Thames Bacteria, III. (With Plates XII-XIV.) . 197 
Darbishire, O. V.— On Actinococcus and Phyllophora. (With Plate 
XV and seven Figures in the text) 253 
Dixon, H. H. — The Possible Function of the Nucleolus in Heredity . 269 
Lang, W. H. — The Prothallus of Lycopodium clavatum, L. (With 
Plates XVI and XVII.) 279 
NOTES. 
Seward, A. C. — The Structure and Affinities of Matonia pectinata . 319 
Bower, F. O. — Studies in the Morphology of Spore-producing 
Members: IV. Leptosporangiate Ferns .... 320 
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