CONTENTS OF VOL. XXXI. SIXTH SERIES. V 



Pago 



Mr. S. Butterworth on a Method for deriving Mutual- and 



Self-Inductance Series . 276 



Prof. A. Anderson and Mr. J. E. Bovven on an Optical Test 



for Angles of Contact 285 



Messrs. Herbert E. Ives and E. F. Kingsbury on the Theory 

 of the Flicker Photometer. — II. TJnsym metrical Con- 

 ditions 290 



Prof. Louis Vessot King : Theory and Experiments relating 

 to the Establishment of Turbulent Flow in Pipes and 



Channels 322 



Mr. W. B. Haines on Ionic Mobilites in Hydrogen — II 339 



Mr. B. C. Laws on the Strength of the Thin-plate Beam, 

 held at its Ends and subject to a uniformly distributed 



Load (Special Case) 348 



Mr. E. C. Thompson on the Electrical and Magnetic Pro- 

 perties of Pure Iron in relation to the Crystal Size ...... 357 



Mr. Alpheus W. Smith on the Hall Effect and Allied Phe- 

 nomena 3G7 



Prof. Karl Pearson on a Brief Proof of the Fundamental 

 Eormula for Testing the Goodness of Fit of Frequency 



Distributions, and on the Probable Error of " P " '. 369 



Sir Ernest Butherford and Mr. A. B. Wood on Long-range 



Alpha Particles from Thorium 379 



Prof. Horace Lamb on Waves due to a Travelling Disturb- 

 ance, with an application to Waves in Superposed Fluids. . 386 



Mr. B. M. Deeley on the Theory of the Winds 399 



Prof. A. Steicheu on the Variation of the Badioactivity of 



the Hot Springs at Tuwa 401 



Dr. Manne Siegbahn and Mr. Einar Friman on the High 



Frequency Spectra of the Elements Gold-Uranium 403 



Notices respecting New Books : — 



Dr. W. Briggs and Dr. G. H. Bryan's The Tutorial 



Algebra 406 



A. W. H. Thompson's A New Analysis of Plane Geo- 

 metry, Finite and Differential 407 



L. Couturat's The Algebra of Logic 'J 07 



Dr. A. Findlay's Practical Physical Chemistry 408 



G. W. Parker's Elements of Optics for the use of Schools 



and Colleges 408 



Dr. H. S. Carslaw's Plane Trigonometry 409 



H. A. Colwell and Dr. S. Buss's Badiuin, X-rays, and 



the Living Cell 410 



Prof. L. T. More's The Limitations of Science 410 



Proceedings of the Geological Society : — 



Mr. P. G. H. Boswell on the Stratigraphy and Petrology 

 of the Low T er Eocene Deposits of the North-Eastern 



Part of the London Basin 411 



Mr. S. H. Warren on the Late Glacial, or Ponder's End, 

 Stage of the Lea Valley 413 



