CONTENTS. Vv 
Page 
J. D. Evererr, Professor A. Scuusrer, Dr. J. A. Friwrne, Professors A 
A. W. Ricker, G. F. FrrzGeratp, G. Curystat, and J. J. THomson, 
Messrs. R. T. GuazEBRooK (Secretary) and W. N. Suaw, Rev. T. C. Frrz- 
parrick, Dr. J. T. Borromiry, Professor J. Virtamu Jonzs, Dr. G. Jonn- 
STONE Stronzy, Professor 8. P. Tuompson, Mr. G. Forses, Mr. J. Runnin, 
nd Mr, E. H. GRIFFITHS.....c...ccccsscseccoscsssceseaensaecnseensceseeeseensweneceees 150 
Apprenpix.—I. Extracts from Letters received, dealing with the Ques- 
tion Of the Wnitor Heat SLi t.cs..ccssersssere eer ree 154 
55 II. The Capacity for Heat of Water from 10° to 20°C. re- 
ferred to its Capacity at 10° C. as Unity............... 162 
III. Recalculation of the Total Heat of Water from the 
Experiments of Regnault and Rowland. By W.N. 
SIAN oe oro Saas an nde ovenecw cuss anceeenscrs aetna: sonatectaes 162 
Meteorological Observations on Ben Nevis. —Report of the Committee, consist- 
ing of Lord McLaren (Chairman), Professor A. Crum Brown (Secretary), 
Dr. Joun Murray, Dr. AtexanperR Bucuan, and Professor R. CopELAnD. 
(Drawn up by Dr. BUCHAN.)........::cceseeeeeeeeseeeeeeeeseceeeeeteteseneeeessanenees 166 
The Application of Photography to the Elucidation of Meteorological Pheno- 
mena.—Sixth Report of the Committee, consisting of Mr. G. J. Symons 
(Chairman), Professor R. Metpoxra, Mr. J. Hopxrnson, and Mr. A. W. 
CiaYpEN (Secretary). (Drawn up by the Secretary.) .........-.sseeeeseeeeeeees 172 
Seismological Investigation.—First. Report of the Committee, consisting of 
Mr. G. J. Symons (Chairman), Dr. C. Davison and Professor J. MILNE 
(Secretaries), Lord Ketvin, Professor W.G. Apams, Dr. J. T. BorromLEy, 
Sir F. J. Bramwetz, Professor G. H. Darwin, Mr. Horacr Darwin, Mr. 
G. F. Deacon, Professor J. A. Ewrne, the late Professor A. H. GREEN, 
Professor C. G. Knorr, Professor G. A. Lesour, Professor R. Mutpora, 
Professor J. Perry, Professor J. H. Poynrine, and Dr. Isaac Roserts. 
Report of Committee .......ccccceececeseceseeeeeeenes Baraat dae deanna tee 180 
I. Notes on Instruments which will record Earthquakes of Feeble 
Intensity. Professor J. Miznz, F.R.S. (Also see Section VII. 
” 
and Appendix.) ........ccccccscrscnsescnesensecenteererscenenseccecaeeeenes 181 
TI. Observations with Milne’s Pendulums T and U, 1895-1896. Pro- 
fessor J). MaGN, WAR;S. ..ocn. cccasccece suds ovecesmaaonaie sea oeladeiceanist 184. 
The Localities and their Geology..........-.seescseneereeeseeeeeess 184 
The Instruments T and U and their Installation ............... 187 
Artificially produced Disturbances ............ssssseesseee sess eens 188 
Sudden Displacements and Earthquakes in the Isle of Wight 188 . 
Earthquakes recorded in Europe, and possibly noted in the 
Isle of Wight, August 19 to October 16, 1895 .............4. 191 
Notes on Special Earthquakes. (See also Appendix, 229.) ... 199 
Tremors and Pulsations, their relationship to the hours of the 
day. Air-current effects. Effects of barometric pressure, 
temperature, frost, rain, KC. ...........seeeeeeeeeec eee eeseeeeee eens 2 
Biren al |W ay esc asccucseaee sad a-e sevice recor vara easecnjeraccenose-iesie sees 212 
TIT. Changes in the Vertical observed in Tokio, September 1894 to 
March 1896. Professor J. MItnn, FRAG, ..........eeeeee cess ee ees 215 
IV. On Experiments at Oxford. By Professor H. H. TuRNER......... 216 
V. The Perry Tromometer. Professor Joun PprRY, F.RS. ........- 218 
VI. Earthquake Frequency (a note). Dr.C. G. Kyort, F.R.S.E....... 220 
VII. Instruments used in Italy, Cartes Davison, Sc.D..........+.++++ 220 
Apprnpix.—Notes on Special Earthquakes. Prof. J. Minnz, F.R.S. 229 
