933 



the Calculation of the Anthropological Measurements taken at Newcastle; — Sixth 

 Report on the North-Western Tribes of the Dominion of Canada. 



Together with the Transactions of the Sections, Sir F. A. Abel's Address, and 

 Resolutions of the General Committee of the Association. 



EEPORT OF THE SIXTY-FIRST MEETING, at Cardiff, August 

 1891, FuUislied at £1 4s, 



Contents : — Report of the Corresponding Societies Committee ; — Report on the 

 present state of our knowledge of Thermodynamics, specially with regard to the 

 Second Law ; — Sixth Report on Electrolysis in its Physical and Chemical Bearings ; 

 — Eleventh Report on the Earthquake and Volcanic Phenomena of Japan ; — Second 

 Report of the Committee for calculating Tables of certain Mathematical Functions, 

 and, if necessary, taking steps to carry out the Calculations, and publishing the 

 results in an accessible form ; — Fifth Report on the application of Photography to 

 the Elucidation of Meteorological Phenomena ; — Report on the Discharge of Elec- 

 tricity from Points ; — Report of the Committee for co-operating with the Scottish 

 Meteorological Society in making Meteorological Observations on Ben Nevis; — 

 Third (interim) Report on the various Phenomena connected with the Recalescent 

 Points in Iron and other Metals ; — Second (interim) Report of the Committee for 

 co-operating with Dr. Kerr in his Researches on Electro-optics ;— Report of the 

 Committee for co-operating with Dr. C. Piazzi Smyth in his Researches on the Ultra- 

 violet Rays of the Solar Spectrum ;— Report on the best means of Comparing and 

 Reducing Magnetic Observations ; — Report of the Committee for constructing and 

 issuing Practical Standards for use in Electrical Measurements ; — Interim Report of 

 the Committee for carrying on the Tables connected with the Pellian Equation from 

 the Point where the work was left by Degen in 1817 ;— Seventh Report on the best 

 methods of recording the direct Intensity of Solar Radiation ; — Report on the 

 Preparation of a new series of Wave-length Tables of the Spectra of the Elements 

 and Compounds; — Interim Report on the Action of Light upon Dyed Colours; — 

 Report (provisional) on the Influence of the Silent Discharge of Electricity on Oxygen 

 and other Gases ;— Third Report on the Bibliography of Spectroscopy ; — Fifth Report 

 on Isomeric Naphthalene Derivatives ; — Fifth Report on the Bibliography of Solu- 

 tion; — Third Report on the best method of establishing an International Standard 

 for the Analysis of Iron and Steel ; — Provisional Report on the direct formation of 

 Haloid Compounds from pure materials ; — Report (provisional) on the Absorption 

 Spectra of Pure Compounds ; — Nineteenth Report on the Erratic Blocks of England, 

 Wales, and Ireland ; — Second Report on the Registration of all the Type Specimens 

 of British Fossils ; — Seventeenth Report on the Circulation of Underground Waters- 

 in the Permeable Formations of England and Wales, and the Quantity and Character 

 of the Water supplied to vaiious Towns and Districts from these Formations ; — 

 Report on the Volcanic Phenomena of Vesuvius and its neighbourhood ; — Second 

 Report on the collection, preservation, and systematic registration of Photographs 

 of Geological Interest in the United Kingdom ; — Report on the advisability and 

 possibility of establishing in other parts of the country Observations upon the 

 Prevalence of Earth Tremors similar to those now being made in Durham in connec- 

 tion with coal-mine explosions ; — Report of the Committee for working the very 

 Fossilif erous Transition Bed between the Middle and Upper Lias in Northampton- 

 shire, in order to obtain a more clear idea of its fauna, and to fix the position of 

 certain species of Fossil Fish, and more fully investigate the horizon on which they 

 occur ; — Report of the Committee to complete the investigation of the Cave at 

 Elbolton, near Skipton, in order to ascertain whether Remains of Paleolithic Man 

 occur in the Lower Cave Earth ; — Report of the Committee for carrying on excava- 

 tions at Oldbury Hill, near Ightham, in order to ascertain the existence or otherwise 

 of Rock-shelters at this spot ; — Fourth Report on the present state of our knowledge 

 of the Zoology and Botany of the West India Islands, and on the steps taken to. 

 investigate ascertained deficiencies in the Fauna and Flora; — Draft Report on the 

 present state of our knowledge of the Zoology of the Sandwich Islands, and on the 

 steps taken to investigate ascertained deficiencies in the Fauna; — Fifth Report of 

 the Committee for taking steps for the establishment of a Botanical Laboratory at 

 Peradeniya, Ceylon ; — Fourth Report on the Disappearance of Native Plants from their 

 Local Habitats ; — Report of the Committee for making a digest of the observations- 

 on the Migration of Birds at Lighthouses and Light-vessels, which have been carried 



