951 



leaching of Science in Elementary Schools ;- Report of tlie Committee for deter- 

 luining a Gauge for the manufacture of tlie various small Screws used in Tele^'raphic 

 and Electrical Apparatus, in Clockwork, and fur other analogous purposes ; — Report 

 on Patent Legislation ;—l{eport of the Committee for defining the Facial Charac- 

 teristics of the Races and Principal Crosses in the British Isles, and obtaining 

 Illustrative Pliotographs with a view to their publication ; — Report on the present 

 state of our knowledge of Spectrum Analysis ; -Report of the Committee for pre- 

 paring a new series of Wave-length Tables of the Spectra of the Elements; — On the 

 Connection between Sunspots and Terrestrial Piienomena; — On the Seat of the 

 Electromotive Forces in the Voltaic Cell ;— On the Archasan Rocks of Great Britain ; 

 — On the Concordance of the MoUusca inhabiting both sides of the North Atlantic 

 and the intermediate Seas ; — On the Ch.aracteristics of the North American Flora ; — 

 On the Theory of the Steam Engine ; — Improvements in Coast Signals, with Supple- 

 mentary Remarks on the New Eddystone Lighthouse ; — On American Permanent 

 Way. 



Together with the Transactions of the Sections, Lord Rayleigh's Address, and 

 Recommendations of the Association and its Committees. 



REPORT OF THE FIFTY.FIFTH MEETING, at Aberdeen, Sep- 

 tember 1885, Published at £1 4s. 



Contents : — Report of the Committee for constructing and issuing practical 

 Standards for use in Electrical Measurements ; — Report of the Committee for pro- 

 moting Tidal Observations in Canada ; — Fifth Report on Meteoric Dust ; — Third 

 Report on the Harmonic Analysis of Tidal Observations; — Report 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 for reducing and tabulating the Tidal Observations in the 

 English Channel, made with the Dover Tide-gauge, and for connecting them with 

 Observations made on the French Coast; — Report on Standards of White Light; — 

 Report of the Committee for co-operating with Mr. K. J. Lowe in his project of 

 establishing a Meteorological Observatory near Chepstow on a permanent and 

 scientitic basis ; — Report on the best means of Comparing and Reducing Magnetic 

 Observations; — Report of the Committee for co-operating with the Scottish Meteoro- 

 logical Society in making Meteorological Observations on Ben Nevis; — Seventeenth 

 Report on Underground Temperature ; — Report on Electrical Theories ; — Second 

 Report of the Committee for considering the best methods of recording the direct 

 intensity of Solar Radiation ; — Report on Optical Theories ;— Report of the Committee 

 for investigating certain Physical Constants of Solution, especially the Expansion of 

 Saline Solutions ; — Third Report on Chemical Nomenclature ; — Report of the Commit- 

 tee for the Investigation by means of Photography of the Ultra- Violet Spark Spectra 

 emitted by Metallic Elements and their Combinations under varj'ing conditions ;— 

 Report of the Committee for investigating tlie subject of Vapour Pressures and 

 Refractive Indices of Salt Solutions ; — Report of the Committee for preparing a new 

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

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

 Report on the Fossil I'hyllopoda of the Palicozoic Rocks; — Fifth Repiort on the 

 Eartliquake Phenomena of Japan ; — Eleventh Report on the Circulation of Under- 

 ground Waters in the Permeable Formations of England and Wales, and the 

 Quantitj' and Character of the Water supplied to various Towns and Districts from 

 these Formations ; — Report on the Volcanic Phenomena of Vesuvius ; — Report on the 

 Fos.sil Plants of the Tertiary and Secondary Beds of the United Kingdom ; — Report on 

 the Rate of Erosion of the Sea-coasts of England and Wales, and the Influence of the 

 Artificial Abstraction of Shingle or other material in that action ; — Report on the occu- 

 pation of a Table at the Zoological Station at Naples :— Report of the Committee for 

 promoting the Establishment of a Marine Biok gical Station at Granton, Scotland ; — 

 Report on the Aid given by the Dominion Government and the Government of the 

 United States to the Encouragement of Fisheries, and to the Investigation of the va- 

 rious forms of Marine Life on the coasts and rivers of North America ; — Report of 

 the Committee for promoting the Establishment of Marine Biological Stations on the 

 co.'ist of the United Kingdom; — Report on recent Polyzoa ;— Third Report on the 

 Kxploration of Kilima-njaro and the adjoining mountains of Equatorial Africa; — 

 Report on the Migration of Birds;— Report of the Committee for furthering the 



