iv CONTENTS. 



Page 



On the Theory of Exchanges, and its recent extension. By Balfour 

 Stewart, A.M 97 



On the Recent Progress and Present Condition of Manufacturing Che- 

 mistry in the South Lancashire District. By Drs. E. Schunck, 

 R. Angus Smith, and H. E. Roscoe 108 



On Ethno-Climatology ; or, the Acclimatization of Man. By James 

 Hunt, Ph.D., F.S.A., F.R.S.L., Foreign Associate of the Anthropolo- 

 gical Society of Paris, Honorary Secretary of the Ethnological Society 

 of London 129 



On Experiments on the Gauging of Water by Triangular Notches. By 

 James Thomson, M.A., Professor of Civil Engineering, Queen's 

 College, Belfast 151 



Report on Field Experiments and Laboratory Researches on the Con- 

 stituents of Manures essential to cultivated Crops. By Dr. Augustus 

 VoELCKER, Royal Agricultural College, Cirencester 158 



Provisional Report on the Present State of our Knowledge respecting 

 the Transmission of Sound-signals during Fogs at Sea. By Henry 

 Hennessy, F.R.S., Professor of Natural Philosophy in the Catholic 

 University of Ireland 173 



Report on the Present State of our Knowledge of the Birds of the 

 Genus Apteryx living in New Zealand. By Philip Lutley Scla- 

 ter and Ferdinand von Hochstetter 176 



Report of the Results of Deep-sea Dredging in Zetland ; with a Notice 

 of several Species of Mollusca new to Science or to the British Isles. 

 By J. GwYN Jeffreys, F.R.S., F.G.S 178 



Contributions to a Report on the Physical Aspect of the Moon. By 

 J. Phillips, M.A., LL.D., F.R.S., Professor of Geology, Oxford ... 180 



Contribution to a Report on the Physical Aspect of the Moon. By W. 

 R. BiRT, F.R.A.S 181 



Preliminary Report of the Dredging Committee for the Mersey and Dee. 

 By Dr. Collingwood and Mr. Byerley 188 



Third Report of the Committee on Steam-ship Performance 190 



Preliminary Report on the Best Mode of Preventing the Ravages of 

 Teredo and other Animals in our Ships and Harbours. By J. Gwyn 

 Jeffreys, FR.S., F.G.S 200 



Report of the Experiments made at Holyhead (North Wales) to ascer- 

 tain the Transit- Velocity of Waves, analogous to Earthquake Waves, 

 through the local Rock Formations : by command of the Royal Society 

 and of the British Association for the Advancement of Science. By 

 Robert Mallet, C.E., F.R.S 201 



On the Explosions in British Coal-Mines during the year 1859. By 

 Thomas Dobson, B.A., Head Master of the School Frigate "Con- 

 way," Liverpool 236 



Continuation of Report on Steam Navigation at Hull. By James 

 Oldham, C.E., Member of the Institution of Civil Engineers 239 



Brief Summary of a Report on the Flora of the North of Ireland. By 

 Professor G. Dickie, M.D... 240 



