739 



PR0CEEDINC4S of the FORTY-EIGHTH MEETING, at DubUn» 

 August 1878, Published at £1 4s. 



Contents : — Catalogue of the Oscillation-Frequencies of Solar Rays ; — Report 

 on Mr. Babbage's Analytical Machine ; — Third Report of the Committee for deter- 

 mining tlie Mechanical Equivalent of Heat ; — Report of the Committee for arrang- 

 ing for the taking of certain Observations in India, and Observations on AtmospheriG 

 Electricity at Madeira ; — Report on the commencement of Secular Experiments upon 

 the Elasticity of Wires ; — Report on the Chemistry of some of the lesser-known 

 Alkaloids, especially Veratria and Bebeerine ; — Report on the best means for the 

 Development of Light from Coal-Gas ; — Foiurteeuth Report on Kent's Cavern ; — 

 Report on the Fossils in the North-west Higlilands of Scotland ; — Fifth Report on 

 the Thennal Conductivities of certain Rocks ; — Report on the possibility of estab- 

 lishing a ' Close Time ' for the Protection of Indigenous Animals ; — Report on the 

 occupation of a Table at the Zoological Station at Naples ; — Report of the Anthro- 

 pometric Committee ; — Report on Patent Legislation ; — Report on the Use of Steel 

 for Structural Purposes ; — Report on the Geographical Distribution of the Chiro- 

 ptera ; — Recent Improvements in the Port of Dublin ; — Report on Mathematical 

 Tables ; — Eleventh Report on Underground Temperature ; — Report on the Explora- 

 tion of the Fermanagh Caves ; — Sixth Report on the Erratic Blocks of England, 

 Wales, and Ireland ; — Report on the present state of our Knowledge of the Crus- 

 tacea (Part IV.) ; — Reisort on two Caves in the neighbourhood of Tenby ; — Report on 

 the Stationary Tides in the English Channel and in the North Sea, &;c. ; — Second 

 Report on the Datum-level of the Ordnance Survey of Great Britain ; — Report on 

 Instruments for measuring the Speed of Ships ; — Report of Investigations into a 

 Common Measure of Value in Direct Taxation ; — Report on Sunspots and Rainfall ; 

 — Report on Observations of Luminous Meteors ; — Sixth Report on the Exploration 

 of the Settle Caves (Victoria Cave) ; — Report on the Kentish Boring Exploration ; — 

 Fourth Report on the Circulation of Underground Waters in the Jurassic, New Red 

 Sandstone, and Permian Formations, with an Appendix on the Filtration of Water 

 through Triassic Sandstone ; — Report on the Eifect of Propellers on the Steering of 

 Vessels. 



Together with the Transactions of the Sections, Mr. Spottiswoode's Address, and 

 Recommendations of the Association and its Committees. 



PROCEEDINGS of the FORTY-NINTH MEETING, at Sheffield, 

 August 1879, Published at £1 4s. 



Contents: — Report on the commencement of Secular Experiments upon the 

 Elasticity of Wires ; — Fourth Report of the Committee for determining the Mechan- 

 ical Equivalent of Heat ; — Report of the Committee for endeavouring to procure 

 reports on the Progress of the Chief Branches of Mathematics and Physics ; — Twelfth 

 Report on Underground Temperature ; — Report on Mathematical Tables ; — Sixth 

 Report on the Thermal Conductivities of certain Rocks ; — Report on Observations 

 of Atmospheric Electricity at Madeira ; — Report on the Calculation of Tables of the 

 Fundamental Invariants of Algebraic Forms ; — Report on the Calculation of Sun- 

 Heat Coefficients ; — Second Report on the Stationary Tides in the English Channel 

 and in the Nortli Sea, Sec. ; — Report on Observations of Liiminous Meteors ; — Report 

 on the question of Improvements in Astronomical Clocks ;— Report of the Committee 

 for improving an Instrument for detecting the presence of Fire-damp in Mines ; — 

 ■ Report on the Chemistry of some of the lesser-known Alkaloids, especially Veratria 

 and Beeberiue ; — Seventh Report on the Erratic Blocks of England, Wales, and Ire- 

 land ; — Fifteenth Report on Kent's Cavern ; — Report on certain Caves in Borneo ; — 

 Fifth Report on the Circulation of Underground Waters in the Jurassic, Red Sand- 

 stone, and Permian Formations of England ; — Report on the Tertiary (Miocene) 

 Flora, ko., of the Basalt of the North of Ireland ; — Report on the possibility of 

 Establisliing a ' Close Time ' for the Protection of Indigenous Animals ; — Report on 

 the Marine Zoology of Devon and Cornwall ; — Report on the Occupation of a Table 

 at the Zoological Station at Naples ; — Report on Excavations at Portstewart and 

 elsewhere in the North of Ireland ; — Report of the Anthropometric Committee ; — 

 Report on the Investigation of the Natural History of Socotra ; — Report on Instru- 



