CONTENTS. 



Mr Joseph Barcroft, Apparatus for the Analysis of the Gases in 



Small Quantities of Blood (with Plate I.) 1 



rDr Sidney F. Harmer, On the Structure and Classification of the 



Cheilostomatous Polyzoa . . . . . . . ... 11 



Mr J. Stanley Gardiner, The Natives of the Maldives ... 18 



Mr J. Stanley Gardiner, The Atoll of Minikoi . .... 22 



Mr J. H. Grace, Note on the Rational space curve of the fourth order . 27 



Mr I. H. Burkill, Trifolium pratense var. parviflorum . . .29 



Mr C. T. R. Wilson, On the Leakage of Electricity through dust-free air . 32 



Mr S. Skinner, Observations on the Minute Structure of the Surface Ice 



of Glaciers (with Plate II.) . 33 



Mr J. Y. Buchanan, On a solar Calorimeter used in Egypt at the total 



solar Eclipse in 1882 .......... 37 



Mr T. J. I' A. Bromwich, Theorems on Matrices and Bilinear Forms . 75 



Prof. J. J. Thomson, On the question as to whether or not there are any 

 free charged ions produced during the combination of hydrogen and 

 chlorine ; and on the effect produced on the rate of the combination by 

 the presence of such io?is . . . . . . . . .90 



