VI CONTENTS OF VOL. II. SIXTH SERIES. 



Page 

 Prof. C. Bams on Simultaneous Volumetric and Electric 



Graduation of the Steam-Tube with a Phosphorus Ionizer. . 477 

 Prof. T. W. Richards and Mr. E. H. Archibald on a Study 

 of Growing Crystals by Instantaneous Photomicrography. 



(Plates VII. IX.) 488 



Mr. A. W. Ash' on on the Resistance of Dielectrics, and the 

 Effect of an Alternating Electromotive Eorce on the Insu- 

 lating Properties of Indiarubber 501 



Mr. Bruce V. Hill on Accidental Double-Refraction in 



Liquids 524 



Prof. Louis T. More on Dielectric Strain 527 



Dr. C. Ohree on Applications of Elastic Solids to Metrology . 532 

 Prof. Karl Pearson on Lines and Planes of Closest Pit to 



Systems of Points in Space 559 



Mi*. A. W. Porter on the Emissiou-Functioii of a Body 



emitting a Line-Spectrum 573 



Notices respecting New Books : — 



Drs. B. Williamson and E. A. Tarleton's Elementary 

 Treatise on Dynamics, containing Applications to 



Thermodynamics = 574 



Prof. Dr. A. Classen's Ausgewahlte Methoden der 



Analytischen Chemie . . . . , 575 



J. G. Vogt's Entstehen und Vergehen der Welt als 



kosmischer Kreisprozess 576 



Proceedings of the Geological Society: — 



Mr. F. W. Harmer on the Influence of the Winds upon 



Climate during the Pleistocene Epoch 577 



Mr. G. Barrow on the Occurrence of Silurian (?) Bocks 

 in Forfarshire and Kincardineshire along the Eastern 



Border of the Highlands 578 



Mr. J. B. Hill on the Crush-Conglomerates of Argyll- 

 shire '. 579 



Mr. A. Strahan on the Passage of a Seam of Coal into a 



Seam of Dolomite . . , 580 



Mr. H. W. Monckton on some Landslips in Boulder- 

 Clay near Scarborough 580 



NUMBER XII.— DECEMBER. 



Lord Rayleigh on the Induct ion-Coil 581 



Dr. C. Chree on Applications of Elastic Solids to Metrology . 594 

 Prof. Clarence A. Skinner on the Conditions controlling 

 the Drop of Potential at the Electrodes in Vacuum-Tube 

 Discharge 616 



