912 



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

 tember 1885, PuhUshed at £1 4s. 



Contents. — Eeport 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 

 Eeport on the Harmonic Analysis of Tidal Observations;— Eeport of the Committee 

 for co-operating with the Meteorological Society of the IMauritius in their proposed 

 publication of Daily Synoptic Charts of the Indian Ocean from the year 1861 ;— 

 Eeport of the Committee for reducing and tabulating the Tidal Observations in the 

 Eno-lish 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. E. J. Lowe in his project of 

 establishing a Meteorological Observatory near Chepstow on a permanent and 

 scientific 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 

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

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

 intensity of Solar Radiation ;— Eeport on Optical Theories ;— Eeport 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 varying conditions ; - 

 Eeport of the Committee for investigating the subject of Vapour Pressures and 

 Eefractive Indices of Salt Solutions; — Eeport of the Committee for preparing a new 

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

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

 Eeport on the Fossil Ph5'llopoda of the Palaeozoic Eocks ; — Fifth Eeport on the 

 Earthquake Phenomena of Japan ; — Eleventh Eeport on the Circulation of Under- 

 •o-round Waters in the Permeable Formations of England and Wales, and the 

 Quantity and Character of the Water supplied to various Towns and Districts from 

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

 Fossil 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 Biological 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 ; — Eeport of 

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

 •coast of the United Kingdom; — Report on recent Polyzoa; — Third Report on the 

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

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

 ploration of New'Guinea by making a grant to Mr. Forbes for the purposes of his 



Expedition • Report of the Committee for furthering the Scientific Examination of 



the country' in the vicinity of Mount Roraima in Guiana by making a grant to Mr. 

 Everard F. im Thurn for the purposes of his Expedition ; — Report of the Committee 

 for promoting the Survey of Palestine ; — Report on the Teaching of Science in Ele- 

 mentary Schools ; — Report on Patent Legislation ; — Report of the Committee for 

 investigating and publishing reports on the physical characters, languages, and 

 industrial and social condition of the North- Western Tribes of the Dominion of 



Canada- Report of the Corresponding Societies Committee ;— On Electrolysis; — A 



tabular statement of the dates at which, and the localities where Pumice or Volcanic 

 Dust was seen in the Indian Ocean in 1883-4; — List of Works on the Geolog}% Mine- 

 raloo-v and Paleeontology of Staffordshire, Worcestershire, and Warwickshire ; — 

 On Slaty Cleavage and allied Rock-Structures, with special reference to the Mecha- 

 nical Theories of their Origin ; — On the Strength of Telegraph Poles ;— On the Use 

 of Index Numbers in the Investigation of Trade Statistics ; — The Forth Bridge 

 Works ;— Electric Lighting at the Forth Bridge Works ;— The New Tay Viaduct. 



Too-'ether with the Transactions of the Sections, Sir Lyon Playfair's Address, and 

 recommendations of the Association and its Committees. 



