CONTENTS. 
Vv 
Page 
Tables of Certain Mathematical Functions—Report of the Committee, con- 
sisting of Lorp Ketvin (Chairman), Lieut.-Colonel ALLAN CUNNINGHAM 
(Secretary), Dr. J. W. L. GuaisHer, Professor A. G. GREENHILL, Professor 
W. M. Hicks, Major P. A. MacManon, and Professor A. Loner, appointed 
for calculating Tables of Certain Mathematical Functions, and, if necessary, 
for taking steps to carry out the calculations, and to publish the results in 
HIMBA CCOSSUDIC LOLM iid, soda waciiscvdsaas ce Ped-ostigdare dest audea dst susedavehaed secs vessbies 
Seismological Investigations.—Fourth Report of the Committee, consisting of 
Professor J. W. Jupp (Chairman), Mr. Joun Mine (Secretary), Lord 
Ketvi, Professor T. G. Bonney, Sir F. J. BRamwett, Mr. C. V. Boys, 
Professor G. H. Darwin, Mr. Horace Darwin, Major L. Darwin, 
Professor J. A. Ewine, Professor C. G. Knorr, Professor R. Mretpona, 
Mr. R. D. OtpHam, Professor J. Purry, Professor J. H. Poynrrye, 
Mr. Crement Rep, Mr. G. J. Symons and Professor H. H. Turner. 
(Drawn up by the Secretary, Mr. JOHN MILNE.) ........:ccccsecsceeeseeseweeees 
~ I. On Seismological Stations already established. By J. Mrtnz ... 
II. Notes respecting Observing Stations and Registers obtained from 
THE) SAMO. sy DY Dc MUCLNE yi sanes a cectiocotiaassniiayctesnapteeleseswaiie wats 
III. Discussion of the Preceding Registers. By J. MItne ............... 
IV. Varieties of Earthquakes and their respective Durations. By 
PANETUN Tc seccscnesestosner™ sca pooh inHsticpacppadeucuereucrieNadasoro sere 
NV. duarinquake benoes,, By. MILNE 9. csqcsleaccvvaspavesessnacecn «canis 
VI. Earthquake Precursors. By J. MILNE ...........cececcesceeceeee sewers 
VII. On Certain Disturbances in the Records of Magnetometers and the 
Occurrence of Earthquakes. By J, MIrnz........ fens acasoreoetae Sas 
Rebbe Worm oke ROpOUES, at.) cacyasscatadery Monde naehy ac eeatetath ads dmematon eene cat 
Photographic Meteorology.—Report of the Oommittee, consisting of Mr. G. J. 
Symons (Chairman), Mr. A. W. Crayprn (Secretary), Professor R. Mrt- 
pota, Mr. Joun Horxrinson, and Mr. H.,N. Dickson, appointed to apply 
Photography to the Elucidation of Meteorological Phenomena, (Drawn 
TDA CS SECIOLALY )) cc seasons s qosteactgndeneanan4adoeseeritet cctavetaaseeaaants in ves 
Experiments for Improving the Construction of Practical Standards for use in 
Electrical Measurements.—Report of the Committee, consisting of Lord 
Rayteien (Chairman), Mr. R. T. Guazesroox (Secretary), Lord Kutyin, 
Professors W. E, Ayrton, J. Prrry, W. G. Apams, Oriver J. Lopes, and. 
G. Carry Foster, Dr. A. Murruean, Sir W. H. Prec, Professors J. D. 
Everetr and A. Scuusrer, Dr. J, A. Fremine, Professors G. F. Frrz- 
GERALD and J. J. THomson, Mr. W. N. SHaw, Dr. J. T. Borromtiery, 
Rev. T. C. Firzparricx, Professor J. VirtAmu Jones, Dr. G. JoHNSTONE 
Stoney, Professor S. P. Tompson, Mr. J. Renniz, Mr. E. H. Grirrirus, 
Professor A. W. RickpR, and Professor H. L. CALLENDAR............... Aer 
AppenDix I—On the Mutual Induction of Coaxial Helices. By 
PL OrAwHVAMUEMUGH: ye evade! <achcatues toed dccdcscaesseeden 
7 II.—Proposals for a Standard Scale of Temperature based 
on the Platinum Resistance Thermometer. By Pro- 
POC Gr CET, E CMETN DAW ieee. tacdsccestssntcsgaeceasercs 
1JJ.—A Comparison of Platinum and Gas Thermometers 
made at the International Bureau of Weights and 
Measures at Sévres. By Dr. P. Cuarrvis and 
Mer le 8, PEABO ata et casters ex canh naire so'ec seasons snante 
IV.—On the Expansion of Porcelain with Rise of Tempera- 
” 
160 
230 
238 
243 
/ cy ture. By T, G. BEDFORD .......... aig aGlatcheaatttca came 245 
