Nature, Dec. 10, 1885} 
tion A, 181; General Arrangements, 437; Excursions, 
437; Inaugural Address of the President, the Right Hon. 
Sir Lyon Playfair, K.C.B., M.P., F.R.S., 438; Notes for 
the Opening of a Discussion on Electrolysis, to be held in 
Section B, by Prof. Oliver Lodge, 454; General Proceed- 
ings, 466; Conversaziones, 466; Excursion to Balmoral, 
467 ; Grants, 502; President for 1886, 502; Next Meeting 
to be at Birmingham, 503 
Reports of Committees. —Report on the Proposed Publication 
of Daily Synoptic Charts of the Indian Ocean from 1861, 
502 ; Second Report of the Committee on the Best Methods 
of Recording the Direct Intensity of Solar Radiation, 502 ; 
Third Report of the Committee for the Harmonic Analysis 
of ‘Tidal Observations, 503; Second Report of the Com- 
mittee appointed for Co-operating with Mr. E. J. Lowe in 
his project of establishing a Meteorological Observatory near 
Chepstow, 503; Report of the Committee for Promoting 
Tidal Observations in Canada, 503; Seventeenth Report of 
the Committee for Investigating the Rate of Increase of 
Underground Temperature downwards in various Localities 
of Dry Land and under Water, 503; Report of the Com- 
mittee on the Fossil Plants of the Tertiary and Secondary 
Beds of the United K-ngdom, 504; Report of the Com- 
mittee for the Investigation of the Volcanic Phenomena of 
Vesuvius, 505 ; Report of the Committee for arranging for 
the Occupation of a Table at the Zoological Station at 
Naples, 506; Repo:t of the Committee for Establishing 
Marine Biological Stations on the Coast of the United 
Kingdom, 506 ; Report of the Committee for Promoting 
the Survey of Palestine, 506 ;-Report of the Committee on 
the Earthquake Phenomena of Japan, 526; Report of the 
Committee on Electrical Standards,-528 ; Report on Eleo- 
trical Theories, Prof. J. J. Thomson, 528; Report on 
Standards of White Light, 529; Keport of the Committee 
on Meteoric Dust, 529; Report of the Committee on 
Meteorological Observations on Ben Nevis, 529; Report of 
the Committee on Solution, 529 ; Keport of the Committee 
on the Ultra-Violet Spark Spectra Emitted by Metallic 
Elements, 529; Third Report of the Committee on 
Chemical Nomenclature, 529 ; Report of the Committee on 
the Rate of Erosion of the Sea-Coasts of England and 
Wales, 530; Report of the Committee for Exploring 
Kilima-njaro and the adjoining Mountains of Equatorial 
Africa, 530; Keport of the Committee on the North- 
Western Tribes of Canada, 531; Report on the Blackfoot 
Tribes, 53! 
Section A ( Vathematical and Pirysic il Sci-nce).—Opening Ad- 
dress by the President, Prof. G. Chrystal, M.A., F.R.S.E., 
446; Prof Crum Brown, on the Kinetic Theory of Gases, 
533; Sir William Thomson, on Constant Gravitational In- 
struments, 535 ; Prof. Osborne Reynolds, on the Dilatancy 
of Media Composed of Rigid Particles in Contact, 535; 
Prof. Pirie, on Calculating the Surface-Tensions of Liquids 
by Means of Cylindrical Drops or Bubbles, 536; Prof. 
Pirie on the Surface-Tension of Water which contains a 
Gas Dissolved in it, 536; Lord Rayleigh, on the Thermo- 
dynamic Efficiency of Thermopiles, 536; J. Larmor, on 
Molecular Distances in Galvanic Polarisation, 536; J. T. 
Bottomley, on Cooling of Wires in Air and Vacuum, 536 ; 
Major A. W. Baird, on Levelling Operations of the Great 
‘Trigonometrical Survey of India, 536; Mr. A. Buchan, on 
the Rainfall of the British Islands, 536; W. H. Preece, on 
a Remarkable Occurrence during the Thunderstorm of 
August 6, 1885, 536; A. Buchan, on the Meteorology of 
Ben Nevis, 536; Dr. Courteney Fox, on the Sequence of 
Mean Temperature and Rainfall inthe Climate of London, 
536; W. H. Preece, on Domestic Electric Lighting, 537 ; 
Discussion on Standards of White Light, 537; A. Vernon 
Harcourt, on Photometry with the Pentane Standard, 537 ; 
Prof. W: M. Hicks, on the Constitution of the Luminiferous 
Ether on the Vortex Atom Theory, 537; J. Joly, on a 
Photometer made with Translucent Prisms, 537; R. T. 
Glazebrook, F.R.S., on a Point in the Theory of Double 
Refraction, 538 ; Prof. W. F. Barrett, on a New and Simple 
Form of Calorimeter, 538 
Sction B (Chemical Science).— Opening Address by the Presi- 
dent, Prof. H. E. Armstrong, Ph. D., F.R.S., 449, 467 ; Prof. 
Ramsay, on the non-existence of Gaseous Nitrogen Trioxide, 
538; Prof. Ramsay, on some Actions of a Grove’s Gas Bat- 
tery, 538; Sir H. E. Roscoe, F.R.S., on the Spontaneous 
INDEX Vii 
Polymerisation of Volatile Hydrocarbons at the Ordinary 
Atmospheric Temperatures, 538; J. T. Brierley, on New 
Vanadium Compounds, 538; T. Jamieson, on the Essential 
Food of Plants, 538; Prof. Odling, a Plea for the Empiric 
Naming of Organic Compounds, 538; Prof. T. Carnelley, 
on the Periodic Law, as illustrated by certain Physical 
Properties of Organic Compounds, 539; Prof. T. Car- 
nelley, on the Cause of the Periodic Law, and the Nature of 
the Chemical Elements, 539; Dr. J. H. Gladstone, on the 
Value of the Refraction Goniometer in Chemical Work, 
539; G. Gladstone, on the Refraction of Fluorine, 539; 
Prof. Gilbert, on the Conditions of the Development and 
of the Activity of Chlorophyll, 539; Prof. Pardie, on the 
Action of Sodium Alcoholates on Fumaric and Maleic 
Ethers, 539; on Sulphine Salts derived from Ethylene 
Sulphide , Dr. Orme Masson, 539; on an apparently New 
Hydrocarbon from Distilled Japanese Petroleum, by Dr. 
Divers and T. Nakamura, 539; the Composition of Water 
by Volume, Dr. A. Scott, 539; Prof. Dewar, on Solutions 
of Ozone and the Chemical Action of Liquid Oxygen, 540 ; 
F. Maxwell Lyte, on the Use of Sodium or other Soluble 
Aluminates for Softening and Purifying Hard and Impure 
Water, and Deodorising and Precipitating Sewage, Waste 
Water from Factories, &c., 540; J. Spiller, on Some New 
Crystallised Combinations of Copper, Zinc, and Iron Sul- 
phates, 540; Prof. Clowes, on Barium Sulphate as a 
Cementing Material for Sandstone, 540 
Section C (Geolo.y).—Opening Address by the President, Prof. 
J. W. Judd, F.R.S., 453, 472; Hugh Miller, on some 
Results of a Detailed Survey of the Old Coast-Lines near 
Trondhjem, Norway, 555; Dr. J. C. Howden, on the 
Glacial Deposits of Montrose, 555; G. H. Kinahan, on 
Irish Metamorphic Rocks, 555; Prof. Frank Clowes, on 
Barium Sulphate as a Cementing Material in Sandstone, 
5553 W. Whitaker, on Deep Borings at Chatham :-a Con- 
bution to the Deep-seated Geology of the London Basin, 
5553 Sir Richard Owen, F.R.S., on American icvidences 
of Eocene Mammals of the ‘‘ Plastic Clay” Period, 556; 
Dr. Max Schuster, on some Results of the Crystallographic 
Study of Danburite, 556; Edward Hull, F.R.S, Notice 
of an Outline Geological Map of Lower Egypt, Arabia 
Petra, and Palestine, 556; Dr. Kk. H. Traquair, F.R.S., 
a Preliminary Note on a New Fossil Reptile recently 
discovered at New Spynie, near Elgin, 556; Rev. E. Hill, 
on the Average Density of Meteorites compared with that 
of the Earth, 556; Prof. Edward Hull, F R.S., on the 
Occurrence of Lower Old Red Conglomerate in the Pro- 
montory of the Fanad, North Donegal, 555 ; Prot. T. G 
Bonney, F.R.S., on Bastite-Serpentine and Troktolite in 
Aberdeenshire, with a Note on the Rock of the Black 
Dog, 556; Lieut.-Col. Playfair, on the Re discovery of Lost 
Numidian Marbles in Algeria and Tunis, 556; Prof. A. 
Renard, on some Rock-Specimens from the Islancs of the 
Fernando Noronha Group, 556; Prof. T. G. Bozney, 
F.R.S., a Preliminary Note on some Traverses of the 
Crystalline District of the Central Alps, 557; Prof. H. 
Carvill Lewis, on the Direction of Glaciation as ascertained 
by the Form of the Striz, 557; B. N. Peach and J. Horne, 
on the Geology of, Duress and Eriboll, with Special Refer- 
ence to the Highland Controversy, 558 ; Chas Lapworth, 
on the Highland Controversy in british Geology — its 
Causes, Course, and Consequences, 558; W. Ivison Mac- 
adam, on Certain Diatomaceous Deposits (Diatomite) from 
the Peat of Aberdeenshire, 559; Prof. G. A. Lebour, on 
some Kecent Earthquakes on the Downham Coast, and 
their Probable Causes, 559; Prof. H. Carvill Lewis, on 
some Examples of Pressure-Fluxion in Pennsylvania, 559 
Section D (Biology).—Opening Address by the President, Prof. 
W. C. McIntosh, LL.D., F.R.S., 476; Prof. Edward _ 
Hull, F.R.S., on the Cause of the Extreme Dissimilarity - 
between the Faunas of the Red Sea and the Mediterranean 
notwithstanding their Recent Connection, 560 ; Prof. 
Struthers, on the Tay Whale (A/gaptera longi:nana) and 
other Whales Recently Obtained in the District, 560 5 
Prof. Tuiner, on Some Points in the Anatomy of Sowerby’s 
Whale, 560; Prof. Struthers, on the Cervical Vertebrze of 
the Greenland Right Whale, 560; Prof. Struthers, on the 
Development of the Vertebrz of the Elephant, 560 ; Prof. 
Struthers, on the Development of the Foot of the Horse, 
560; Prof. Cleland, on the Viscera of Gyanatus eectricus, 
