— CCXXXII — 

 /. Ih'OWH. On ilclmholtz' s Theory oC Mcrciiry-dropping Klectio- 

 (le?, und the Differcnco of Potcnlial bctween Clean Mercury and 

 Electrolytes. — C. R. Cross and A. S. Williams. Tho Strcnslit of 

 the Induced cnrrcnt willi a ]\ragnetotelcplir ne transmiltor as In- 

 fluenced by the Strcngth of the Magnet. — J. Pavhev. Qn Dia- 

 inagnetism and Iho Concentration of Energy. — A. Blytl. On llie 

 probablc Cause of the Displacemcnt of Sliorolincs, an Altempt 

 at a Geological Chronology. 



Idem. - Voi. 27, n. 169. - Juue 1889. 



H. A. Rowland and C. T. Hutchinson. On tho Electromagnelic Elfcct 

 of Convection-Currents. — Rayleigh. On the Characler of tlie 

 Complete Radiation ala givcn Temperature. — Oliver Lodge. On 

 an Eleolrostatic Field produced by vaiying Magnetic Induction. 



— On the Visibility of Faint Intei ference-Bands. — //. A. Roic- 

 land. Table of Standard Wave-Lenglhs. — A. Blyll. On the pro- 

 bable Cause of tho Dispiacement of Shore-lines, an Attempi at a 

 Geological Chronology. — Mascari. On the Achrovoatism of In- 

 tcrferences. 



Idem. - Voi. 28, n. 170. - July ^889. 



/. /. Thomson. On the Magnetic Elfects produced by Molion in the 

 Electric Fiekl. — C. V. Boys. Quarts as an Insulator. — Cary T. 

 Hulchinson and G. Wilkes. A Comparison of the Mcrcnry Unit 

 with the British Association Unit of Resistance. — Svante Arre- 

 nius. Electrolytic Dissociation versus Hydration. — /. H. Glad- 

 stonc and W. Hihbert. On the Molecular Weight of Caoulchouc 

 and other Colloid Bodies. — G. Fuller. Water-spray Inlluence 

 Machine. — Oliver J. Lodge. On Electric Radiation and its Con- 

 centration by Lenses. 



Idem. - Voi. 28, n. 171. - August 1889. 



Rayleigh. On .A.chromatic Interi'crence-Bands. — A. W. Clayden. Note 

 on some Photographs of Lightning and of «Black» Electric Sparks. 



— /. F. Botlomley. Expansion vvith Rise of Temperature of Wi- 

 res under Pulling Stress. — L. Duncan, G. Wilkes and C. T. Hut- 

 chinson. A Determinalion of the Value of the B. A. Unit of Re- 

 sistance in Absolute Measure, by the Method of Lorenz. — //. 

 Hoffert. Intermittent Lightning-Flashes. — R. T. Glazehrook. On 

 the Reflexion and Refraction of Light at the Surface of a Cry- 

 slal on the Quasl-labilc Ac-thcr Thcoi y. — II. Ilcrlz. On the Pro- 



