vl CONTENTS. 
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Report of the Committee for the purpose of investigating the rate of : 
Increase of Underground Temperature downwards in various Loca- 
lities, of Dry Land and under Water. Drawn up by Professor Evz- 
reETr, at the request of the Committee, consisting of Sir Win11Am 
Txomsoy, LL.D., F.R.S., Mr. E. W. Buyyey, F.R.S., F.G.S., Principal 
Forsrs, LL.D., F.R.S., Mr. Arncurpatp Germ, F.R.S., F.G.S., Mr. 
James Gratsuer, F.R.S., Rev. Dr. Granam, Mr. Frremine Jenxin, 
C.E., F.R.S., Sir Cuartes Lyetz, Bart., LL.D., F.R.S., Mr. J. Crerx 
Maxwett, Mr. Grorcz Maw, F.L.S., F.G.S., Prof. Pamures, LL.D., 
F.R.S., Mr. Pencrtty, F.R.S., F.G.S., Professor Ramsay, F.R.S., 
F.G.8., Mr. Batrovr Stewart, LL.D., F.R.S., Mr. G. J. Symons, 
Prof. Jams Tromson, C.E., Prof. Youne, M.D., F.R.S.E, and Prof. 
Kyat, .D-CLL., F.B.8.B,  Beeretary 21 .. oo) ae ae 510 
Changes of the Moon’s Surface. By Baron Von Miprrr .......... 514 
Report on Polyatomic Cyanides. By Tuomas Farruny.............. 519 
