CONTENTS. 
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PAGE 
Prof. H. M arshall Ward, Notes on some of the Rarer or more Interesting 
Fungi collected during the past year 93 
Miss E. Dale, Notes on Artificial Cultures of Xylaria. (Communicated 
by Professor Marshall Ward) 100 
Mr J. S. Budgett, The Habits and Development of some West African 
Fishes 102 
Mr H. C. Pocklington, On the Interference bands produced by a thin 
wedge 105 
Profs. G. D. Liyeing and J. Dewar, On the most Volatile Gases of the 
Atmosphere 107 
Mr H. J. H. Fenton, and Mr H. O. Jones, On a method of comparing 
affinity -values of Acids 108 
Mr H. J. H. Fenton, and Mr J. H. Ryffel, On Isomeric Esters of 
dioxymaleic Acid . . . . . . . . . .109 
Mr H. J. H. Fenton, and Miss Mildred Gostling, Note on the Constitu- 
tion of Cellulose 110 
Mr H. O. Jones, On some substituted ammonium compounds of the type 
NR'R'Rf'X. (Communicated by Mr Fenton) . . . .111 
Mr Henry Jackson, On Molecular Weight of Glycogen . . . .115 
Mr Henry Jackson, On the condensation of formaldehyde and the 
formation of fi-acrose . . . . . . . . .117 
Mr J. Patterson, On the effect of a magnetic field on the resistance of 
thin metallic films. (Communicated by Professor Thomson) . . 118 
Prof. J. J. Thomson, On the Theory of Electric Conduction through thin 
metallic films ........... 120 
Dr J. W. W. Stephens, The Prevention of Malaria . . . .123 
Mr J. H. Grace, A Theorem on Curves in a Linear Complex . . .132 
Mr Francis Darwin, Preliminary Note on the Function of the Root-tip in 
relation to Geotropism . . . . . . . . .134 
Mr R. H. Biffen, Note on some Factors in the Spore-formation of 
Acrospeira mirabilis (Berk, and Br.) 136 
Mr J. Parkin, On a reserve Carbohydrate , which produces Mannose, from 
the bulb of Lilium • . .139 
Mr W. H. R. Rivers, The Colour Vision of the Eskimo . . . 143 
Prof. A. Macalister, Variations in the Ossification of the Occipital Bone 150 
Dr C. Taylor, Geometrical Notes on Theorems of Halley and Fregier . 153 
Mr R. H. Yapp, Notes on new and interesting Plants from the Malay 
Peninsula . . . .159 
