﻿PLATES. 



I. Illustrative of Prof. R. W. Wood's Paper on Interference 

 Colours of Chlorate of Potash Crystals and a New 

 Method of Isolating Heat Waves. 

 IL Illustrative of Prof. E. Rutherford's Papers on Retard- 

 ation of the a particle from Radium in passing through 

 Matter, and on the Distribution of the Intensity of 

 the Radiation from Radioactive Sources. 



III. Illustrative of Prof. R. W. Wood's Paper on Fish-Eye 



Views and Vision under Water. 



IV. Illustrative of Prof. R. W. Wood's Paper on the 



Fluorescence and other Spectra of Iodine Vapour. 

 V. Illustrative of Prof. E. Rutherford's Paper on the Mass 

 and Velocity of the as, particles expelled from Radium 

 and Actinium ; and of Pi of. E. Rutherford and Dr. O. 

 Hahn's Paper on the Mass of the a particles from 

 Thorium. 

 VI. & VII. Illustrative of Sir W. Ramsay and Dr. Spencer's Paper 

 on Chemical and Electrical Changes induced by Ultra- 

 violet Light. 



VIII. Illustrative of Prof. E. L. Hancock's Paper on the Effect 

 of Combined Stresses on the Elastic Properties of 

 Iron and Steel. 

 IX. & X. Illustrative of Prof. E. L. Hancock's Paper on Tests of 



Metals in Reverse Torsion. 

 XI.-XV. Illustrative of Prof. R. W. Wood's Paper on the 

 Fluorescence and Magnetic Rotation Spectra of 

 Sodium Vapour, and their Analysis. 



XVI. Illustrative of Lord Rayleigh's Paper on Interference- 

 Rings observable 'by means of Plates whose Surfaces 

 are absolutely Parallel. 

 XVII. &■ XVIII. Illustrative of Prof. J. A. Fleming's Paper on the 

 Electric Radiation from Bent Antennas. 



XIX. Illustrative of Prof. H. Barton and Mr. J. Penzer's 

 Paper on Simultaneous Vibration-C urves of String and 

 Air photographically obtained from a Monochord. 



