PLATES. 



I. Illustrative of Mr. G. A. Hemsalech's Paper on the Relative 

 Behaviour of the Light Radiations emitted by Iron Vapcur 

 under the Influence of Thermal and Chemical Actions in 

 Flames. 

 II. Illustrative of Dr. R. T. Beatty's Paper on Energy Distribution 

 in Spectra. 



III. Illustrative of Prof. C. V. Raman and Mr. Ashutosh Dey's Paper 



on Discontinuous Wave-Motion. 



IV. Illustrative of Profs. D. N. Mallik and A. B. Das's Paper on High 



Vacuum-Spectra of Gases. 

 V. Illustrative of Messrs. R. G. Parker and A. J. Daliaday's Paper on 

 a Precision Method of uniting Optical Glass. 

 VI. Illustrative of Prof. R. R. Sahni's Paper on the Scattering of 



* Particles by Gases. 

 VII. Illustrative of Prof. E. Taylor Jones's Paper on the Secoudary 

 Potential of an Induction-Coil at "make." 

 VIII. Illustrative of Prof. C. V. Raman and Mr. Ashutosh Dsy's Paper 

 on Discontinuous Wave-Motion. 

 IX. Illustrative of Dr. L. Vegard's Paper on Results of Crystal 

 Analysis. 



