VI CONTENTS OF VOL. IX. SIXTH SERIES. 



Page 

 Notices respecting New Books : — 



Lt.-Col. A. Cunningham's Quadratic Partitions 617 



G. Lechalas's Introduction a la Geometrie Generale . . 617 

 Prof. H. Pecheux's Traite Theorique et Pratique d'Elec- 



tricite 618 



Prof. W. Ostwald's Die Schule der Chemie 619 



Proceedings of the Geological Society : — 



Rev. J. P. Blake on the Order of Succession of the Manx 

 Slates in their Northern Half, and its Bearing on the 

 Origin of the Schistose Breccia associated therewith. . 619 

 Mr. P. E. Middleton on the Wash-outs in the Middle 

 Coal-Measures of South Yorkshire 620 



NUMBER LIIL— MAT. 



Profs. E. Rutherford and H. T. Barnes on the Heating 



Effect of the y Rays from Radium 621 



Miss J. M. W. Slater on the Excited Activity of Thorium. 



(Plate VIII.) 628 



Dr. S. R. Milner on the Polarization at a Metallic Anode . . 645 

 Profs. E. W. Morley and D. C. Miller on the Theory of 

 Experiments to detect Aberrations of the Second Degree. 



(Plate IX.) 669 



Profs. E. W. Morley and D. C. Miller : Report of an 

 Experiment to detect the PitzGerald-Lorentz Effect. 



(Plate X.) 680 



Prof. A. Winner Duff on Poiseuille's Law at Yery Low Rates 



of Shear 685 



Prof. C. Kinsley on Short Spark-Discharges 692 



Mr. A. S. Eve on the Properties of Radium in Minute 



Quantities ; with a Note by Prof. Rutherford 708 



Mr. A. Campbell on Direct Reading Resistance-Thermo- 

 meters, with a Note on Composite Thermocouples 713 



Mr. J. J. Taudin Chabot on a Simple Diagram connecting 

 the Yarious Motions in the so-called Bohnenberger's 



Machine 722 



Prof. R. W. Wood on the Anomalous Dispersion of the 



Magnetic Rotation of the Plane of Polarization 725 



Prof. W. McF. Orr on Clausius' Theorem for Irreversible 



Cycles, and on the Increase of Entropy 728 



Notices respecting New Books : — 



A Magnetic Survey of Japan reduced to the Epoch 



1895-0 and the Sea-Level 730 



Dr. M. W. Travers's Experimentelle Untersuchung von 



Gasen 731 



Yier- uud Eiinfstellige Logarithmentafeln nebst einigen 



Physikalischen Konstanten v . 732 



Fiinf zehnter Bericht der Naturwissenschaftlichen Gesell- 

 schaft zu Chemnitz 732 



