PLATES. 
I -VI. Illustrative of Messrs. K. Honda. T. Terada, and D. Isitani'.s 
Paper on the Secondary Undulations of Oceanic Tides. 
VII. Illustrative of Messrs. A. C. and A. E. Jessup's Paper on the 
Evolution and Devolution of the Elements. 
VIII. Illustrative of Mr. J. D. Hamilton Dickson's Paper on 
the Joule-Kelvin Inversion Temperature, and Olszewski's 
Experiment. 
IX. Illustrative of Mr. A. Campbell's Paper on the Use of 
Variable Mutual Inductances. 
X. & XI. Illustrative of Prof. E. L. Hancock's Paper on the Effect of 
Combined Stresses on the Elastic Properties of Steel. 
XII. Illustrative of Mr. L. F. Richardson's Paper on a Freehand 
Graphic way of determining Stream Lines and Equi- 
potentials. 
XIII. Illustrative of Prof. R. W. Wood's Paper on Anomalous 
Magnetic Rotatory Dispersion of Neodymium. 
XIV. Illustrative of Prof. R. W. Wood's Paper on the Existence 
of Positive Electrons in the Sodium Atom. 
XV.-XVII. Illustrative of Mr. E. Buckingham's Paper on the Thermo- 
dynamic Corrections of the Nitrogen Scale. 
XVIII. & Illustrative of Prof. R. W. Wood's Paper on the Resonance 
XIX. Spectra of Sodium Vapour. 
