iv CONTENTS. 



Page 



Seveuth lleport of the Committee, consistiug of Sir W. Tuomson, F.K..S., 

 Professor Everett, Sir Charles Lyell, Bart., F.ll.S,, Professor J. 

 Clerk Maxwell, F.R.S., G. J. Svjions, F.M.S., Professor Ramsay, 

 F.R.S., Professor Geikie, F.R.S., James Glaisher, F.R.S., Rev. Dr. 

 Graham, G. Maw, F.G.S., W. Pengellt, F.R.S., S. J. Mackie, F.G.S., 

 Professor Hull, F.R.S., Professor Ansted, F.R.S., and Professor 

 Prestwich, F.R.S., appointed for the pui'pose of investigating the 

 Rate of Increase of Underground Temperature downwards in various 

 localities of Dry Land and under Water. By Professor Everett, 

 D.C.L. (Secretary) ' 14 



Report of the Committee, consisting of Professor Huxley, F.R.S., P. L. 

 ScLATER, F.R.S. , F. M. Balfour, J. Gwyn Jeffreys, F.R.S., Dr. M. 

 Foster, F.R.S., E. Ray Lankester, F.R.S., and A. G. Dew-Smith 

 (Secretary), on the Zoological Station at Naples 18 . 



Report of a Committee, consisting of E. C. C. St.anforu, James Dewar, 

 Alfred E. Fletcher, and Alfred H. Allex (Secretary), appointed 

 to inquire into the Methods employed in the estimation of Potash and 

 Phosphoric Acid in Commercial Products and on the mode of stating 

 the results. Drawn up by Alfred H. AllEiV 24 



Report on the Present State of our Knowledge of the Crustacea. — 

 Part I. On the Homologies of the Dermal Skeleton. By C. Spence 

 Bate, F.R.S. &c 41 



Second Report of a Committee, consisting of Prof. A. S. Herschel, B.A., 

 F.R.A.S., andG. A. Lebour, F.G.S., on Experiments to determine the 

 Thermal Conductivities of certain Rocks, showing especially the Geo- 

 logical Aspects of the Investigation 54 



Preliminary Report of the Committee, consisting of Professors Roscoe, 

 Balfour Stewart, and Thorpe, appointed for the purpose of extend- 

 ing the observations on the Specific Volumes of Liquids. Drawn up 

 by T. E. Thorpe 02 



Sixth Report on Earthquakes in Scotland, drawn up by Dr. Bryce, 

 F.G.S. The Committee consists of Dr. Bryce, F.R.S.E., Sir W. Thom- 

 son, F.R.S., J. Brough, G.Forbes, F.R.S.E.,D.Mil]s-e-Home, F.R.S.E., 

 and J. Thomson 04 



Seventh Report of the Committee on the Treatment and Utilization of 

 Sewage, reappointed at Belfast, 1874, and consisting of I^chaed B. 

 Grantham, C.E., F.G.S. (Chairman), Professor A. W. AVilliamson, 

 F.R.S., Dr. Gilbert, F,R.S., Professor Corfield, M.A., M.D., Wil- 

 liam Hope, V.C, and F. J. Bramwell, C.E., F.R.S 05 



Report of the Committee, consisting of Major Wilson, R.E., and Mr. 

 Ravenstein, appointed for the purpose of firrthering the Palestine 

 Explorations 31 



Third Report of the Committee, consisting of Professor Hakkness, Pro- 

 fessor Prestwich, Professor Hughes, Rev. H. W. Crosskey, Professor 

 W. Boyd Dawkins, Messrs. C. J. Woodavaed, George Maw, L. C. 

 MiALL, G. H. Morton, and J. E. Lee, appointed for the purpose of 

 recording the position, height above the sea, lithological characters, 

 size, and origin of the more important of the Erratic Blocks of Eng- 

 land and Wales, reporting other matters of interest connected v.-ith 

 the same, and taking measures for their preservation. Drawn up 

 by the Rev, H. W. Crosskey, Secretary 82 



