24 Dr. G. Gore. New Phenomena in Electrolysis. [May 1, 



It is such a comparison that the authors have made, their method 

 of analysis being one which enables them to detect the existence of 

 unknown Inequalities having apparent periodicity in a mass of obser- 

 vations. A description of this method has already been published in 

 the " Proceedings of the Royal Society " for May 15th, 1879. The 

 comparison was made by this method between sun-spot observations 

 extending from 1832 to 1867 inclusive, Toronto temperature-range 

 observations extending from 1844 to 1879 inclusive, and Kew tempe- 

 rature-range observations extending from 1856 to 1879 inclusive. 

 The following conclusions were obtained from this comparison. 



(1.) San-spot Inequalities around 24 and 26 days, whether 

 apparent or real, seem to have periods very nearly the same as those 

 of terrestrial meteorological Inequalities as exhibited by the daily 

 temperature-ranges at Toronto and at Kew. 



(2.) While the sun-spots and the Kew temperature-range Inequal- 

 ities present evidence of a single oscillation, the corresponding 

 Toronto temperature-range Inequalities present evidence of a double 

 oscillation. 



(3.) Setting the celestial and terrestrial members of each indi- 

 vidual Inequality, so as to start together from the same absolute 

 time, it is found that the solar maximum occurs about 8 or 9 days 

 after one of the Toronto maxima, and the Kew temperature-range 

 maximum about 7 days after the same Toronto maximum. 



(4.) The proportional oscillation exhibited by the temperature- 

 range Inequalities is much less than the proportional oscillation 

 exhibited by the corresponding solar Inequalities. 



IV. " Some New Phenomena of Electrolysis." By G. GORE, 

 F.R.S., LL.D. Received April 23, 1884. 



Whilst making a series of experiments on the " self-deposition of 

 metals," I observed, by trying a number of different metals, that 

 several of them received an electrolytic deposit of cadmium by 

 contact with cadmium in various solutions of that metal much more 

 frequently than others ; I therefore made various experiments to 

 determine whether this was due to difference of density of current or 

 to other causes. 



By means of these additional trials, I found, on passing an 

 undivided current through a series of portions of the same metallic 

 solution, that cathodes composed of different metals of equal amounts 

 of immersed surface, required currents of different degrees of density 

 to cause deposits of the same metal upon them, and that the 

 differences in some cases were considerable. Another singular cir- 



