CONTENTS of N° 247 .—Fifth Series. 



XLIV. Molecular Force and the Surface-Tension of Solutions. 

 By William Sutherland page 477 



XLV. Galvanometer Design. Waste Space near the Needle. 

 By Professor S. W. Holman . . , . 494 



XL VI. Note on Tinfoil Grating as a Detector for Electric Waves. 

 By T. Mizuno, Eigakushi, Professor of Physics, Daiichi Koto 

 Gakko 497 



XL VII. The Development of Arbitrary Functions. By Prof. 



A 



John Perry and Mr. H. F. Hunt 506 



XL VIII. The Relation between the Atom and the Charge of 

 Electricity carried by it. By J. J. Thomson, M.A., F.R.S., Pro- 

 fessor of Experimental Physics, Cambridge 511 



XLIX. Proceedings of Learned Societies : — 



Geological Society : — Sir Henry H. Howorth on the Chalky 

 Clay of the Fenland and its Borders : its Constitution, 

 Origin, Distribution, and Age ; Mr. T. Crosbee Cantrill, 

 on the Occurrence of Spirorbis-lLimestone and Thin Coals in 

 the so-called Permian Rocks of Wyre Forest ; Prof. T. G. 

 Bonney on the Serpentine, Gneissoid, and Homblendic 

 Rocks of the Lizard District; Dr. J. W. Gregory, on the 

 " Schistes Lustres " of Mont Jovet (Savoy) . 544-547 



L. Intelligence and Miscellaneous Articles : — 



On the Wave-length of the D 3 Helium Line, by A. Deforest 

 Palmer, Jr 547 



Index 549 



With Titlepage, Contents, <fcc 



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