PLATES. 



I. Illustrative of Prof. Magnus's Paper on the Diathermancy of Dry 



and Moist Air. 



II. III. IV. Illustrative of Mr. J. J. Waterston's Paper on the Expansion 



of Water at High Temperatures. 



V. Illustrative of Prof. Bunsen's Paper on Caesium. 



VI. Illustrative of Mr. B. S. Proctor's Paper on the Focal Adjustment 

 of the Eye, and Dr. W. J. M. Rankine's on Plane Water-lines. 



VII. Illustrative of Sir W. Snow Harris's Paper on the Correct Interpre- 

 tation of the Electrical Terms Intensity and Tension, and Mr. T. 

 Tate's on the Elasticity of the Vapour of Sulphuric Acid. 



