977 



Works on the Geology, Mineralogy, and Paleontology of Wales (to the end of 1873) :— 

 On the recent Revival in Trade. 



Together with the Transactions of the Sections, Dr. A. C. Ramsay's Address, and 

 Eecommendations of the Association and its Committees. 



PROCEEDINGS of the FIFTY-FIRST MEETING, at York, 

 August and September 1881, Published at £1 4s. 



Contents :— Report on the Calculation of Tables of the Fundamental Invariants 



of Algebraic Forms ; — Report on Recent Progress in Hydrodynamics (Part I.) ; 



Report on Meteoric Dust;— Second Report on the Calculation of Sun-heat Co- 

 efficients; — Fourteenth Report on Underground Temperature; — Report on the 

 Measurement of the Lunar Disturbance of Gravity; — Second Report on an In- 

 vestigation for the purpose of fixing a Standard of White Light ; — Final Report on 

 the Thermal Conductivities of certain Rocks; — Report on the manner in which 

 Rudimentary Science should be taught, and how Examinations should be held 

 therein, in Elementary Schools ; — Third Report on the Tertiary Flora of the North 

 of Ireland ;— Report on the Method of Determining the Specific Refraction of Solids 

 from their Solutions ; — Fourth Report on the Stationary Tides in the English Channel 

 and in the North Sea, &c. ; — Second Report on Fossil Polyzoa; — Report on the 

 Maintenance of the Scottish Zoological Station ;— Report on the Occupation of a 

 Table at the Zoological Station at Naples ;— Report on the Migration of Birds ;— 

 Report on the Natural History of Socotra ;— Report on the Natural History 'of 

 Timor-laut ;- -Report on the Marine Fauna of the Southern Coast of Devon and 

 Cornwall; — Report on the Earthquake Phenomena of Japan; — Ninth Report on 

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

 Caves of the South of Ireland; — Report on Patent Legislation; — Report of the 

 Anthropometric Committee ; — Report on the Appropriation of Wages, &c. ; Re- 

 port on Observations of Luminous Meteors; — Report on Mathematical Tables; 



Seventh Report on the Circulation of Underground Waters in the Jurassic 

 New Red Sandstone, and Permian Formations of England, and the Quality and 



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



Report on the present state of our Knowledge of Spectrum Analysis ; — Interim Report 

 of the Committee for constructing and issuing practical Standards for use in Electrical 

 Measurements ; — On some new Theorems on Curves of Double Curvature ; Observa- 

 tions of Atmospheric Electricity at the Kew Observatory during 1880; On the 



Arrestation of Infusorial Life by Solar Light; — On the Effects of Oceanic Currents 

 upon Climates ; — On Magnetic Disturbances and Earth Currents ; — On some Applica- 

 tions of Electric Energy to Horticultural and Agricultural purposes ;— On the Pressure 

 of Wind upon a Fixed Plane Surface ; — On the Island of Socotra ;— On some of the 

 Developments of Mechanical Engineering during the last Half-Century. 



Together with the Transactions of the Sections, Sir John Lubbock's Address, and 

 Recommendations of the Association and its Committees. 



REPORT of the FIFTY-SECOND MEETING, at Southampton 



August 1882, Published at £1 4s. ' 



Contents : — Report on the Calculation of Tables of Fundamental Invariants of 

 Binary Quantics ; — Report (provisional) of the Committee for co-operating with the 

 Meteorological Society of the Mauritius in their proposed publication of Daily 

 Synoptic Charts of the Indian Ocean from the year 1861 ; — Report of the Committee 

 appointed for fixing a Standard of White Light ; — Report on Recent Progress in 

 Hydrodynamics (Part II.) ; — Report of the Committee for constructing and issuing 

 practical Standards for use in Electrical Measurements ; — Fifteenth Report on Under- 

 ground Temperature, with Summary of the Results contained in the Fifteen Reports 

 of the Underground Temperature Committee; — Report on Meteoric Dust ;— Second 

 Report on the Measurement of the Lunar Disturbance of Gravity ; — Report on the 

 present state of our Knowledge of Spectrum Analysis ; — Report on the Investigation 

 by means of Photography of the Ultra- Violet Spark Spectra emitted by Metallic 

 Elements, and their combinations under varying conditions ; — Report of the Com- 

 mittee for preparing a new Series of Tables of Wave-lengths of the Spectra of the 

 Elements ; — Report on the Methods employed in the Calibration of Mercurial Ther- 

 1884. 3 B 



