980 



PROCEEDINGS op the FORTY-SEVENTH MEETING, at Ply- 

 mouth, August 1877, Published at £1 4>s. 



Contents : — Thirteenth Eeport on Kent's Cavern ; — Second and Third Eeports 

 on the Methods employed in the estimation of Potash and Phosphoric Acid in Com- 

 mercial Products ; — Report on the present state of our Knowledge of the Crustacea 

 (Part III.) ;— Third Eeport on the Circulation of the Underground Waters in the New 

 Eed Sandstone and Permian Formations of England ; — Fifth Eeport on the Erratic 

 Blocks of England, Wales, and Ireland ; — Fourth Eeport on the Thermal Conducti- 

 vities of certain Eocks ; — Eeport on Observations of Luminous Meteors, 1876-77 ; — 

 Tenth Eeport on Underground Temperature ; — Report on the Effect of Propellers on 

 the Steering of Vessels ; — Eeport on the possibility of establishing a ' Close Time ' 

 for the Protection of Indigenous Animals j-^RejDort on some Double Compounds of 

 Nickel and Cobalt ; — Fifth Eeport on the Exploration of the Settle Caves (Victoria 

 Cave) ; — Eeport on the Datum Level of the Ordnance Survey of Great Britain ; — 

 Report on the Zoological Station at Naples ;— Report of the Anthropometric Com- 

 mittee ; — Report on the Conditions under which Liquid Carbonic Acid exists in 

 Rocks and Minerals. 



Together with the Transactions of the Sections, Prof. Allen Thomson's Address 

 and Recommendations of the Association and its Committees. 



PROCEEDINGS of the FORTY-EIGHTH MEETING, at DubHn, 

 August 1878, Published at £1 As. 



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

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

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

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

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

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

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

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

 Eeport on the Fossils in the North-west Highlands of Scotland ; — Fifth Eeport on 

 the Thermal Conductivities of certain Eocks ; — Eeport 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; — Eeport 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 rV.) ; — Report on two Caves in the neighbourhood of Tenby ; — Eeport on 

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

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

 instruments for measuring the Speed of Ships ; — Eeport of Investigations into a 

 Com m on Measure of Value in Direct Taxation , — Eeport on Sunspots and Eainfall ; 

 — Eeport 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 L^nderground Waters in tlie Jurassic, New Red 

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

 through Triassic Sandstone ;— Report on the Effect 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 



