1vV CONTENTS. 
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Professor GErxiE, Mr. J. Guatsorr, Mr. PEnertiy, Professor Epwarp 
Hutt, Professor Prestwicu, Dr. C. Lz Neve Fosrmr, Professor A. S. 
HeErscHEL, Professor G. A. Lepour, Mr. A. B. Wynnz, Mr. GaLLoway, 
Mr. JosrpH Dickinson, Mr. G. F. Deacon, Mr. E. WErHER=D, and Mr. A. 
SrRaHAN, appointed for the purpose of investigating the Rate of Increase 
of Underground Temperature downwards in various Localities of Dry Land 
and under Water. Drawn up by Professor EVERETT (Secretary) .......... 260 
Report of the Committee, consisting of Captain ABNnzEy, Professor Stoxss, 
and Professor ScuusteR (Secretary), appointed for the purpose of deter- 
mining the best Experimental Methods that can be used in observing Total 
MI OLAEEE CIPHER Mecpncsesascendetevsraceciescecsossocasssesusedesehensience sar teveseeeenretees 
Report of a Committee, consisting of Professors G. H. Darwin and J.C. 
ApAms, for the Harmonic Analysis of Tidal Observations. Drawn up by 
AGL apesd eID SIDYVIEN apewestettenitce'ssivss cs so+esssessieon o0secnesenenemsenaeseserasseaeenesseammed 
Report of the Committee, consisting of Mr. Roprrr H. Scorr (Secretary), 
Mr. J. Norman Lockyer, Professor G. G. Sroxrs, Professor BALFouR 
Stewart, and Mr. G. J. Symons, appointed for the purpose of co-operating 
with the Meteorological Society of the Mauritius in their proposed publica- 
tion of Daily Synoptic Charts of the Indian Ocean from the year 1861....... 
ig of the Committee, consisting of Professor Caytry, Professor G. G. 
SroKEs, Sir Wizr1am THomson, Mr. JAMES GLAIsHER, and Mr. J. W. L. 
GLAIsHER, on Mathematical Tables ......... Soci enece sp eeearaesient acs aasencenseaeoes 
Report of the Committee, consisting of Professor Crum Brown (Secretary), 
and Messrs. Mitnr-Hotmz, Jonn Murray, and Bucuan, appointed for 
the purpose of co-operating with the Scottish Meteorological Society in 
making Meteorological Observations on Ben Nevis .........sccseesceeeeceeeeeees 
Report of the Committee, consisting of Professor Scuuster (Secretary), Sir 
Witiiam THomson, Professor H. EH. Roscon, Professor A. S. HErscHet, 
Captain W. pe W. Asyey, Mr. R. H. Scorz, Dr. J. H. Guapsronn, and 
Mr. J. B. N. Hennussry, appointed for the purpose of investigating the 
practicability of collecting and identifying Meteoric Dust, and of consider- 
ing the question of undertaking regular observations in various localities... 
Report of the Committee, consisting of Captain AnbNnzy (Secretary), Pro- 
fessor W.G. Apams, Professor G. C. Foster, Lord RayteicH, Mr. PREECE, 
Professor ScuustER, Professor Dewar, Mr. Vernon Harcovrt, and Pro- 
fessor AyRTON, reappointed for the purpose of fixing a Standard of 
DWihibe aCe wfc. ccscececocecacnevacucumepeecewetastesceenensecdosens steers se senameeae ryt 
Report of the Committee, consisting of Professors WILLIAMSON, FRANKLAND, 
Roscoz, Crum Brown, and Opiine, and Messrs. J. Mittar THomson, 
V. H. Vrey, and H. B. Drxon (Secretary), appointed for the purpose of 
drawing up a statement of the varieties of Chemical Names which have 
come into use, for indicating the causes which have led to their adoption, 
and for considering what can be done to bring about some convergence of 
the views on Chemical Nomenclature obtaining among English and foreign 
CHEMISES: soos cece ccceccdsccccssscsecaceccousbosssulecotecmeeteranedecbeesce coeete teammates 1 
Report of the Committee, consisting of Professors Op1ine, Huntine- 
ton, and Hartiey (Secretary), appointed for the purpose of investi- 
gating by means of Photography the Ultra-Violet Spark Spectra emitted 
by Metallic Elements, and their combinations under varying conditions. 
Drawn up by Professor W. Ni HARTIBY. .. 29.5. soegetescecseeciosoesse sve scree teeees 
Report of the Committee, consisting of Professors W. A. TrzpEn and H. E. 
ArmMstrRonG (Secretary), appointed for the purpose of investigating 
Asomeric Naphthalene Derivatives ...5....:..ce+ecessontubwessters eve sasecostenenes 
45 
49 
118 
118 
126 
