CONTENTS. 



MEMOIRS. PAGE 



The Rate of Explosion of Hydrogen and Chlorine in the dry and in the 

 moist states. By Harold B. Dixox, M.A,, F.R.S., Professor of 

 Chemistry ; and Mr. J. A. Harker, Dalton Chemical Scholar in 

 Owens College. ... ... ... ... ... ... ... ... 3 



On the determination of the Thermal Conductivities of bad conductors. 

 By Charles H. Lees, M.Sc. , Bishop Berkeley Fellow of Owens 

 College. Communicated by R. F. GwYTHER, M.A 17 



On the Specific Heat of Non-Conductors. Part i : Caoutchouc. By W. 



W. Haldane Gee, B.Sc, F.C.S., and- Hubert L. Terry, F.I.C. 38 



On the Entomostraca and Annelida in the Levenshulme Mottled Lime- 

 stones. By Wm. Brockbank, F.L.S., F.G.S 47 



General, Morphological, and Histological Index to the Author's Collective 

 Memoirs on the Fossil Plants of the Coal Measures. Part I. By 

 William Crawford Williamson, LL.D., F.R.S., «S:c., Foreign 

 Member of the Royal Swedish Acad. Sc. , and of the Royal Society 

 of Gottingen ... ... 53 



The History and Present Position of the Theory of Glacier Motion. 



By H. H. HowoRTH, M.P., F.S.A 69 



On the Intensity of Transmitted Light when the co-efficient of trans- 

 mission of the medium is a function of time. By James Bottomley, 

 B.A., D.Sc, F.C.S 152 



Ilymenopterological Notices. By P. Cameron. Communicated by 



John Boyd ... ... ... ... ... ... ... ... 182 



Description of Drosera intermedia (Hayne), forma subcaulescens, with 

 remarks on the Geographical distribution of the family. By James 

 Cosmo Melvill, M.A., F.L.S. 195 



A New Symbolic Treatinent of the Old Logic. By Joseph John 

 Murphy. Communicated by the Rev. Robert Harley, M.A., 

 F.R.S., Corresponding Member... ... ... ... ... ... 201 



On the Source of some Remarkable Boulders in the Isle of Man. By 

 Percy F. Kendall, F.G.S. Communicated by Thomas Kay. ... 217 



On Two Harmonic Analysers. By Osborne Reynolds, LL.D., F.R.S., 



M. Inst. , C. E. , Professor of Engineering, Owens College 223 



Thoughts on Credit INIoney, and on the Function of the Precious Metals as 

 Distributors of Wealth. By F. J. Faraday, F.L.S., F.S.S 232 



