976 



and Beeberine ; — Seventh Eeport on the Erratic Blocks of England, Wales, and Ire- 

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

 Fifth Eeport on the Circulation of Underground Waters in the Jurassic, Bed Sand- 

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

 Flora, &c, of the Basalt of the North of Ireland; — Eeport on the possibility of 

 Establishing a ' Close Time ' for the Protection of Indigenous Animals ; — Eeport on 

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

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

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

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

 ments for measuring the Speed of Ships ; — Third Eeport on the Datum-level of the 

 Ordnance Survey of Great Britain ; — Second Eeport on Patent Legislation ; — On 

 Self-acting Intermittent Siphons and the conditions which determine the com- 

 mencement of their Action; — On some further Evidence as to the Eange of the 

 Palaeozoic Eocks beneath the South-east of England ; — Hydrography, Past and 

 Present. 



Together with the Transactions of the Sections, Prof. Allmarj's Address, and 

 Eecommendations of the Association and its Comjaittees. 



PROCEEDINGS op the FIFTIETH MEETING, at Swansea, August 

 and September 1880, Published at £1 4s. 



Contents : — Eeport on the Measurement of the Lunar Disturbance of Gravity; — 

 Thirteenth Eeport on Underground Temperature ; — Eeport of the Committee for 

 devising and constructing an improved form of High Insulation Key for Electrometer 

 Work ; — Eeport on Mathematical Tables ; — Eeport on the Calculation of Tables 

 of the Fundamental Invariants of Algebraic Forms; — Eeport on Observations of 

 Luminous Meteors ; — Eeport on the question of Improvements in Astronomical 

 Clocks; — Eeport on the commencement of Secular Experiments on the Elasticity 

 of Wires ; — Sixteenth and concluding Eeport on Kent's Cavern ; — Eeport on the 

 mode of reproduction of certain species of Ichthyosaurus from the Lias of England 

 and Wiirtemburg ; — Eeport on the Carboniferous Polyzoa ; — Eeport on the ' Geological 

 Eecord ' ; — Sixth Eeport on the Circulation of the Underground Waters in the 

 Permian, New Eed Sandstone, and Jurassic Formations of England, and the Quantity 

 and Character of the Water supplied to towns and districts from these formations ; — 

 Second Eeport on the Tertiary (Miocene) Flora, &c, of the Basalt of the North of 

 Ireland ; — Eighth Eeport on the Erratic Blocks of England, Wales, and Ireland ; — 

 Eeport on an Investigation for the purpose of fixing a Standard of White Light ; — 

 Eeport of the Anthropometric Committee ; — Eeport on the Influence of Bodily Exercise 

 on the Elimination of Nitrogen ; — Second Eeport on the Marine Zoology of South 

 Devon ;— Eeport on the Occupation of a Table at the Zoological Station at Naples; - 

 Eeport on accessions to our knowledge of the Chiroptera during the past two years 

 (1878-80) ; — Preliminary Eeport on the accurate measurement of the specific in- 

 ductive capacity of a good Sprengel Vacuum, and the specific resistance of gases at 

 different pressures ; — Comparison of Curves of the Declination Magnetographs at 

 Kew, Stonyhurst, Coimbra, Lisbon, Vienna, and St. Petersburg ; — First Eeport on 

 the Caves of the South of Ireland ; — Eeport on the Investigation of the Natural 

 History of Socotra ; — Eeport on the German and other systems of teaching the Deaf 

 to speak ; — Eeport of the Committee for considering whether it is important that 

 H.M. Inspectors of Elemental Schools should be apjjointed with reference to their 

 ability for examining in the scientific specific subjects of the Code in addition to 

 other matters ; — On the Anthracite Coal and Coalfield of South Wales ; — Eeport on 

 the present state of our knowledge of Crustacea (Part V.) ; — Eeport on the best means 

 for the Development of Light from Coal-gas of different qualities (Part II.) ; — Eeport 

 on Palaeontological and Zoological Eesearches in Mexico ; — Eeport on the possibility 

 of establishing a ' Close Time ' for Indigenous Animals ; — Eeport on the present state 

 of our knowledge of Spectrum Analysis ; — Eeport on Patent Legislation ; — Pre- 

 liminary Eeport on the present Appropriation of Wages, &c. ; — Eeport on the present 

 state of knowledge of the application of Quadratures and Interpolation to Actual 

 Data ; — The French Deep-sea Exploration in the Bay of Biscay ; — Third Eeport on 

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



