﻿PLATES. 



I. Illustrative of Prof. E. Taylor Jones's Paper on the most 

 Effective Adjustment of an Induction-coil. 

 II. Illustrative of Mr. C. V. Banian's Paper on Motion in a 

 Periodic Field of Force. 

 III. & IV. Illustrative of Prof. H. Nagaoka and Mr. T. Takamine's 

 Paper on Anomalous Zeeman Effect in Satellites of the 

 Violet Line (4359) of Mercurv. 

 V. Fig. 1. Illustrative of Mr. H."P. Walmsley and Dr. W. 

 Makower's Paper on the Magnetic Deflexion of the Recoil 

 Stream from Radium A. 

 Fig. 2. Illustrative of Mr. N. Tunstall and Dr. W. Makower's 

 Paper on the Velocity of the a Particles from Radium A. 

 VI. Illustrative of Mr. E. J. Evans's Paper on the Spectra of 



Helium and Hydrogen. 

 VII. Illustrative of Prof. S. Kinoshita and Mr. H. Ikeuti's Paper 

 on the Tracks of the a Particles in Sensitive Photographic 

 Films. 

 VIII. Illustrative of Dr. J. H. Vincent and Mr. C. W. Jude's Paper 

 on the Duplex Harmonograph. 

 IX. Illustrative of Mr. W. Ellis Williams's Paper on the Motion 

 of a Sphere in a Viscous Fluid. 



X. Illustrative of Prof. Louis Vessot King's Paper on the 



Precision Measurement of Air Velocity by means of the 

 Linear Hot-Wire Anemometer. 



XI. Illustrative of Dr. A. C. Crehore's Paper on the Construction 



of Cubic Ciwstals with Theoretical Atoms. 

 Xll. Illustrative of Prof R. R. Sahni's Paper on the Photographic 

 Action of a, j8, and y Ra} T s. 



ERRATA. 



Page 104, lines 15 and 16, for -„ read ~^- 



Page 105, lines 6, 15, and 20, for T read T . 



Page 109, line 1, for cos 3 \fj read cos 2 >p. 



Page 114, line 13, for p_^ read ^_ 



Page 115, in Fig. 3, for I read £. 



Page 1 18, line 3, for y 1 - — g— j read ( 1 _ — — ^ J # 



Page 122, line 21, after " standard " omit the comma. 



Page 127, line 6, for " reciprocal" read simultaneous. 



Page 689, line 8, far " 12-p'/p" read « l-^p'/p." 



Page 698, line 17, for " |*= " read « K =h" 



