Nature . and 2-8 km. persecond, about one-quarter of the above. Lastly, taking theperiod of the pulsations at 10 seconds, the velocity at 27 second, and the maximum tilt of the ground at 12, \gamennone finds the length of a complete pulsation, as ittraversed Italy, to be 54 km., and the height of its crest (orampUtude) about half a metre. BRITISH of the of the corresponding first meeting of the Conference was held at UniversityCollege, Bristol, on Thursday, September 8, at 3 Corresponding Societies Committee were represen
Nature . and 2-8 km. persecond, about one-quarter of the above. Lastly, taking theperiod of the pulsations at 10 seconds, the velocity at 27 second, and the maximum tilt of the ground at 12, \gamennone finds the length of a complete pulsation, as ittraversed Italy, to be 54 km., and the height of its crest (orampUtude) about half a metre. BRITISH of the of the corresponding first meeting of the Conference was held at UniversityCollege, Bristol, on Thursday, September 8, at 3 Corresponding Societies Committee were represented byMr. W. Whitaker (Chairman), Dr. Garson, Mr. Hopkinson,Prof. Meldola, Mr. G. J. Symons, and Mr. T. V. Holmes(Secretary). A short report, which was in the hands of every delegatepresent, contained the following paragraph :— The Committee observe with satisfaction that the correspond-ing societies steadily increase in number, and that the totalnumber of the members composing them also increases. For. example, in the British Association Report oi the Bath meeiingin 1S88 there is a list of fifty-five corresponding societies, havinga total of 18,950 members. The Toronto Report of last yearshows sixty-nine corresponding societies, having a total of 22,395members. On the other hand, the average number of membersin each society appears to have slightly decreased, having beenbetween 344 and 345 in iSSS, and betw^een 324 and 325 in this is accounted for by the collapse of the two federations—the Midland Union and the Cumberland and —and the withdrawal of the Royal Scottish Geo-graphical Society between the two periods. For in iSSS thesethree associations numbered among them 4006 members, as manyas would be found in eleven or twelve average societies. The Committee, while regretting the absence of whose headquarters are not in London from the list ofcorresponding societies, add :—Fortunately, in most cases. 188 NA TURE [Dece
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