LIST OF ILLfsTKATIONS. 



Plates 1 to 4. Professors G. D. Li \ 1:1 M; ami .1. I i:\\ AK on the Spectrum of t IK- ( >\y- 

 hydrogen Flame. 



Plate 5. Mr. W. N. SHAW'S Report on Hygrometric Methods ; First Part, including 

 the Saturation Method and the Chemical Method, and Dew-point Instruments. 



Plates f> to 8. Mr. J. J. WALKER on the Diameters of a Plane Cubic. 



Plates 'J to 14. Professors G. D. LIVKIN<; and J. DKWAK on the Ultra- Violet Spectra 

 of the Elements. Part III. 



Plates 15 and 16. Professor J. A. EWINO and Mr. G. C. COWAN on the Magnetic 

 Qualities of Nickel. 



Plate 17. Professor J. A. EWING on the Magnetic Qualities of Nickel (Supplementary 

 Paper). 



Plate 18. Professor W. C. ROBERTS- AUSTEN on certain Mechanical Prop-rtit s of 

 Metals considered in relation to the Periodic Law. 



Plate 19. Messrs. R. T. GLAZEBKOOK and T. C. FJTZPATRICK on the Specific 

 Resistance of Mercury. 



Plates 20 to 23. Captain ABNKY and Major-Genenil FKSTIKG on Colour Photometry. 

 Part II. 



