942 



REPORT OF THE SIXTIETH MEETING, at Leeds, August 1890, 

 FuhUshed at £1 4s. 



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

 of the Committee to arrange an Investigation of the Seasonal Variations of Tempera- 

 ture in Lakes, Rivers, and Estuaries in various parts of the United Kingdom, in co- 

 operation with the Local Societies represented on the Association ; — Report of the 

 Committee for constructing and issuing Practical Standards for use in Electrical 

 Measurements ; — Fifth Report on Electrolysis in its Physical and Chemical Bearings ; 

 — Sixth Report on the best methods of recording the direct Intensity of Solar Radia- 

 tion ; — Report of the Committee for co-operating with Dr. Kerr in his Researches on 

 Electro-optics ; — Report on Molecular Phenomena associated with the Magnetisation 

 of Iron ; — Tenth Report on the Earthquake and Volcanic Phenomena of Japan ; — 

 Sixth Report on the best means of comparing and reducing Magnetic Observations ; 

 — Repoj-t of the Committee for co-operating with the Scottish Meteorological Society 

 in making Meteorological Observations on Ben Nevis ; — Sixtli Report of the Com- 

 mittee for promoting Tidal Observations in Canada ; — Report on the present state of 

 our Knowledge in Electrolysis and Electro-chemistry ; — Report on the Preparation of 

 a new series of Wave-length Tables of the Spectra of the Elements and Compounds ; 

 — Report on the Bibliography of Spectroscopy ; — Fourth Report on the Influence of 

 Silicon on the Properties of Iron and Steel ; — Second Report on the best method of 

 establishing an International Standard for the Analysis of Iron and Steel : —Report 

 on tlie Action of Light on the Hydracids of the Halogens in presence of Oxygen ; — 

 Third Report on the present ^lethods of Teaching Chemistry ; — Fourth Report on 

 the Properties of Solutions ;— Fourth Report on the Bibliography of Solution; — 

 Discussion on the Theory of Solution ;— Provisional Report on the Influence of the 

 Silent Discharge of Electricity on Oxygen and other Gases ; — Report on the Absorp- 

 tion Spectra of Pure Compounds ; — Report on the best methods for the Registration 

 of all Type Specimens of Fossils in the British Isles ; — Eighteenth Report on the 

 Erratic Blocks of England, Wales, and Ireland ; — Sixteenth Report on the Circulation 

 of Underground Waters in the Permeable Formations of England and \Vales, and 

 the Quantity and Character of the Water supplied to various Towns and Districts 

 from these Formations ; — Final Report on an Ancient Sea-beach near Bridlington 

 Quay ; — Report on the Cretaceous Polyzoa ; — Report on the Volcanic Phenomena of 

 Vesuvius and its neighbourhood ; — Fourth and final Report on the ' Manure ' Gravels 

 of Wexford ; — Eighth Report on the Fossil Phyllopoda of the Palsozoic Rocks ; — 

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

 Geological Interest in the United Kingdom ; — Report on the occupation of a Table 

 at the Laboratory of the Marine Biological Association at Plymouth ; — Third 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 ; — Report on the occupation of a Table at the Zoological Station at Naples ; 

 — Report of the Committee for making a Digest of the Observations on the Migration 

 of Birds ; — Third Report on the Disappearance of Native Plants from their Local 

 Habitats ; — Fourth Report of the Committee for taking steps for the e.'-tablishment 

 of a Botanical Station at Peradeniya, Ceylon ; — Report of the Committee for im- 

 proving and experimenting with a Deep-sea Tow-net for opening and closing under 

 water ; — The probable Effects on Wages of a general Reduction in the Hours of 

 Labour ; — Fourth Report on the best methods of ascertaining and measuring Varia- 

 tions in the Value of the Jlonetary Standard ; — Report on the teaching of Science in 

 Elementary Schools ; — Fourth Report as to the Statistical Data available for deter- 

 mining the amount of the Precious Metals in use as Money in the principal Countries, 

 the chief Forms in which the Money is employed, and the Amount annually used in 

 the Arts ; — On some new Telemeters or Range-finders ; — Second Report on the 

 Investigation of the Action of Waves and Currents on the Beds and Foreshores of 

 Estuaries by means of Working Models ; — Report on the Geography and t he Habits, 

 Customs, and Physical Characters of the Nomad Tribes of Asia Minor and Nortliern 

 Persia, and on the excavation of Sites of Ancient Occupation ; — Report on the 

 Habits, Customs, Physical Characters, and Religions of the Natives of India ; — Report 

 of the Committee for editing a new Edition of ' Anthropological Notes and Queries ' ; 

 — Fourth Report on the Prehistoric Inhabitants of the British Islands; — Report on 



