CONTENTS. 
PAGE 
Edward Alexander Newell Arber . .vii 
Smith, Gilbert Morgan. —Cytological Studies in the Protococcales. III. Cell Structure 
and Autospore Formation in Tetraedron minimum (A. Br.), Hansg. With Plate XV 459 
Arber, Agnes.— The Phyllode Theory of the Monocotyledonous Leaf, with Special 
Reference to Anatomical Evidence. With thirty-two Figures in the Text . . . 465 
Bailey, I. W., and Thompson, W. P.—Additional Notes upon the Angiosperms Tetra- 
centron, Trochodendron, and Drimys, in which Vessels are absent from the Wood. 
With Plate XVI and nine Figures in the Text.. 503 
Holden, H. S., and Bexon, Dorothy. —Observations on the Anatomy of Teratological 
Seedlings. I. On the Anatomy of some Polycotylous Seedlings of Cheiranthus Cheiri. 
With seventeen Figures in the Text.. 513 
Williams, Maud. —Absorption of Gold from Colloidal Solutions by Fungi . . . 531 
Watson, W.—Sphagna, their Habitats, Adaptations, and Associates. With five Figures 
in the Text...535 
Holmes, M. G.—A Study in the Anatomy of Hazel-wood with Reference to Conductivity 
of Water. With two Figures and eight Graphs in the Text . . . - . -553 
Benson, Margaret J.—Mazocarpon or the Structure of Sigillariostrobus. With 
Plates XVII and XVIII and four Figures in the Text.569 
Williams, Maud. —The Influence of Immersion in Certain Electrolytic Solutions upon 
Permeability of Plant Cells. With two Figures in the Text.591 
NOTE. 
Brierley, William B.— On Cell-regeneration in Botrytis cinerea. With three 
Figures in the Text ............ 601 
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