PLATES. 



I. & II. Illustrative of Mr. H. S. Allen's Paper on the Motion of a 

 Sphere in a "Viscous Fluid. 



III. Illustrative of Prof. R. W. Wood's Paper on an Application of the 



Method of Striae to the Illumination of Objects under the Micro- 

 scope. 



IV. Illustrative of Prof. J. G. MacGregor's Paper on a Diagram of 



Freezing-point Depressions for Electrolytes. 

 V. Illustrative of Dr. C. Davison's Paper on the Sea-Waves connected 

 with the Japanese Earthquake of June 15, 1896. 



ERRATA. 



P. 196, last line, formula (16), for 



V/(1+N^ S 3. 634) read 



V/(1+N£ S 3 -634)1 



P. 197, line 14, /or -6 read -6x10-3 

 P. 306, line 11, for attraction read repulsion 

 „ line 13, for repulsion read attraction 



