Naturé, Dec. 2, 1886} 
tee on the Circulation of Underground Waters, 482 ; 
Report of the Committee for obtaining Observations on 
the Migration of Birds at Lighthouses and Light- Vessels, 
482; Report of the Committee for Researches on Food- 
Fishes and Invertebrates at St. Andrews Marine Laboratory, 
483 ; Report of the Committee for promoting the Establish- 
ment of a Marine Biological Station at Granton, Scotland, 
484; Report of a Committee on the Depth of Permanently | 
Frozen Snow in the Polar Regions, 485 ; Report of the 
Committee on the Desiraility of Further Research in the 
Antarctic Regions, 487; Third Report of the Committee 
appointed for co-operation with Mr. E. J. Lowe in his 
Project of establishing a Meteorological Observatory near 
Chepstow, 506; Report of the Committee for investigating 
Vapour-Pressure and Refractive Indices of Salt-Solutions, 
506 ; Report of the Committee for investizating Certain 
Physical Constants of Solutions, 506: Preliminary Report | 
of the Committee for the further Investigation of the 
Influence of the Silent Discharge of Electricity on Oxygen 
and other Gases, 506 ; Report of the Committee for Inves- 
tigating Isomeric Naphthalene Derivatives, 506 ; Report of 
the Committee for preparing a New Series of Wave-Length 
Tables of the Spectra of the Elements, 506; Report of a 
Committee for considering the Combination of the Ordnance 
and Admiralty Surveys and the Production of a Bathy- 
hypsographical Map of the British Isles, 506; Report of 
the Committee on the Teaching of Science in Elementary 
Schools, 507 
Section A (Mathematical and Physical Science)—Opening 
Address by the President, Prof. G. H. Darwin, M.A.,LL.D., 
F.R.S.,F.R.A.S., 420; Dr. Macalister, the Grenada lclipse 
Expedition, 441; Sir William Thomson on Stationary 
Waves in Flowing Water, 507; Prof. Jas. Blyth on a New 
Form of Current Weigher for the Absolute Determination 
of the Strength of ai Electric Current, 508 ; Hon. Ralph 
Abercromby on the Peculiar Sunrise Shadow of Adam's 
Peak, Ceylon, 509; T. J. Baker, Description of a New 
Calorimeter for Lecture Purposes, 599; J. T. Morrison, 
M.A., on the Distribution of Temperature in Loch Lomond 
and Loch Katrine during the past Winter and Spring, 509 ; 
J. T. Morrison, M.A., on Distribution of Temperature in the 
Firth of Clyde in April and June 1886, 509 ; A. W. Riicker, 
M.A., F.R.S., on the Critical Curvature of Liquid Surfaces 
of Revolution, 510 
Section B (Chemical Science)—O pening Address by the Presi- 
dent, W. Crookes, F.R.S., 423; Dr. W. J. Russell and 
W. J. Lapraik on Absorption-Spectra of Uranium Salts, 
510; Prof. Carnelly, on the Air of Dwellings and Schools 
and its Relation to Health, 510; H. B. Dixon, F.R.S., on 
Observation of Gases over Mercury, 511; R. Warington, 
F.R.S., on the Distribution of the Nitrifying Organism in 
the Soil, 511; Prof. W. N. Hartley, F.R.S., on the 
Fading of Water-Colours, 511; H. Robinson, M.A., on 
the Colour of the Oxides of Cerium and its Atomic Weight, 
511; E. F. Ehrhardt, on the Relative Stability of the 
Hydrochloride C,)H,,Cl, prepared from Turpentine and 
Camphene respectively, 511; R. F. Ruttan, B.A., M.D., 
on Derivatives of Tolidine and Azotolidine Dyes, 511; H. 
R. Mill, D.Sc., on the Chemistry of Estuary Water, 511 ; 
Dr. Gladstone, F.R.S., the Essential Oils, 511; G. H. 
Bailey, D.Sc., Ph.D., on an Apparatus for maintaining 
Constant Temperatures up to 100° C., 512; J. W. Wailes, 
on the Treatment of Phosphoric Crude Iron in Open- 
Hearth Furnaces, 512; W. Hutchinson, Notes on the 
Basic Bessemer Process in South Lancashire, 512; G. 
Hatton, Production of Soft Steel ina New Type of Fixed 
Converter, 512; T. Turner, Assoc.R.S.M., on the Influ- 
ence of Re-melting on the Properties of Cast Iron, on Sili- 
con in Cast Iron, and on Silicon in Iron and Steel, 512; 
W. Thomson, F.R.S.E., on a New Apparatus for readily 
Determining the Calorimetric Value of Fuel and Organic 
Compounds, 512; Prof. Odling, F.R.S., on some Decom- 
positions of Benzoic Acid, 512; W. Crookes, F.R.S., on 
the Methods of Chemical Fractionation, and the Fractiona- 
tion of Yttria, 512 
Section C (Geology)—Opening Address by the President, T. G. 
Bonney, D.Sc., LL.D., 442 ; E. W. Bucke on the Geysers 
of the Rotorua District, North Island of New Zealand, 
512; Rev. W. Tuckwell on the Glacial Erratics of Leices- 
INDEX. 
tershire and Warwickshire, 512; C. Le Neve Foster on 
-Manganese-Mining in Merionethshire, 512; Prof. T. | 
+ 
vil 
McKenny Hughes, M.A., F.G.S., on the Silurian 
Rocks of North Wales, 512; Prof. J. W. Judd, F.R.S., 
Note to accompany Photographs by Mr. Josiah Martin to 
Illustrate the Scene of the Recent Eruption in New Zea- 
land, 512; W. A. EK. Ussher, F.G.S., on the Relations of 
the Middle and Lower Devonian in West Somerset, 513 ; 
W. Pengelly, F.R.S., on a Scrobicularia Bed containing 
Human Bones at Newton-Abbot, Devonshire, 513; W. 
J. Harrison, on a Deep Boring for Water in the New Red 
Marls (Keuper Marls) near Birmingham, 513; J. H. Player, 
on an Accurate and Rapid Method of Estimating the Silica 
in an Igneous Rock, 513 ; Prof. T. McKenny Hughes, M.A., 
Notes on some Sections of the Arenig Series of North 
Wales and the Lake District, 513 ; G. M. Dawson, on the 
Rocky Mountains, with Special Reference to that part of 
the Range between the Forty-ninth Parallel and Head 
Waters of the Red Deer River, 513; W. Benton, on Sur- 
face Subsidence causel by Lateral Coal-Mining, 514; J. 
Hopkinson, ona New Form of Clinometer, 514 ; R. Meade, 
Statistics of the Production and Value of Coal raised within 
the British Empire, 514 ; W. Dawson, LL.D., F.R.S., on 
Canadian Examples of supposed Fossil Algae, 514; Prof. 
E. Hull, LL.D., Notes on some of the Problems now being 
Investigated by the Officers of the Geological Survey in the 
North of Ireland, chiefly in Co. Donegal, 514; Hugh 
Miller, on the Classification of the Carboniferous Lime- 
stone Series, Northumbrian Type, 515; Chas. Callaway, 
D.Sc., M.A., Notes on the Crystalline Schists of Ireland, 
515 
Section D (Biology)—Opening Address by the President, 
William Carruthers, F.R.S., 451; Initiation of Discussion 
on the Value of the ‘‘ Type-System” in the Teaching of 
Botany, by Prof. B. Balfour, 536; Henry Seebohm, Re- 
marks on Physiological Selection, an Additional Sugges- 
tion on the Origin of Species, by G. J. Romanes, F.R.S., 
537; Prof. G. B. Howes, on the Morphology of the Mam- 
malian Coracoid, 537 ; E. B. Poulton, on some Experiments 
upon the Acquisition of an Unpleasant Taste as a means of 
Protecting Insects from their Enemies, 537 ; Prof. Marshall 
Ward, on the Germination of the Spores of Pylophthora 
infestans, 537; Henry Trimen, M.B., F.L.S., on the 
Flora of Ceylon, especially as affected by Climate, 537 ; 
Prof. Bower on Humboldiia laurifolia as a Myrmecophilous 
Plant, 538; E. B. Poulton, on the Artificial Production of 
a Gilded Appearance in Chrysalises, 538; Dr. R. von 
Lendenfeld, on the Nervous System of Sponges, 538; Dr. 
R. von Lendenfeld, on the Functions of Nettle-Cells, 538 ; 
Dr. Maxwell T. Masters, F.R.S., Note on the Floral 
Symmetry of the Genus Cypripedium, 538; Dr. von 
Lendenfeld, Notes on Australian Coelenterates, 538; M. 
C. Grabham, M.D., Bugio, the Biological Relations of an 
Atlantic Rock, 538; Percy F. Frankland, on the Multi- 
plication and Vitality of Certain Micro-organisms, Patho- 
genic and otherwise, 539 
Section E (Geography)—Opening Address by the President, 
Major-General Sir F, J. Goldsmid, K.C.S.1., 474 
Section G (Mechanical Science—Opening Address by the 
President, Sir Jas. N. Douglass, M.Inst.C.E., 502 
Section H ( Anthropology)—O pening Address by the President, 
Sir George Campbell, K.C.S.1., 454; Sir Charles Wilson, 
K.C.B., on Native Tribes of the Egyptian Sudan, 608 ; Prof. 
W. B. Dawkins on Celtic and Germanic Designs on Runic 
Crosses, 608 ; G. W. Hambleton on the Scientific Preven- 
‘tion of Consumption, 608; G. St, Clair, Dragon Sacrifices 
at the Vernal Equinox, 608 ; Dr. H. Hicks, F.R.S., Evi- 
dence of Pre-Glacial Man in North Wales, 608; Prof. B. 
Dawkins on Recent Exploration of Gop Cairn and Cave, 
608 ; W. Cunnington on Bowls’ Barrow, near Heytesbury, 
in North Wilts, 609; Dr. J. G. Garson, the Crania and 
other Bones found in Bowls’ Barrow, 609 ; Rev. G. Brown, 
Papuans and Polynesians, 609 ; Sir G. Campbell, What is 
an Aryan ?, 609; Prof. W. H. Hingston, M.D., Influence 
of the Canadian Climate on Europeans, 609; Rev. G. 
Brown on Life-History of a Savage, 609 ; Sir W. Dawson, 
F.R.S., on Photography of Mummies of Ancient Egyptian 
Kings Recently Unrolled, 610; C. N. Bell, Prehistoric 
Man in Manitoba, 610; R. G. Haliburton on the Tau 
Cross on the Badge of a Medicine-Man of the Queen Char- 
lotte Isles, 610 
British Birds’ Eggs, A. G. Butler, 619 
British Coasts: Actinotrocha of the, W. H. Shrubsole, 439; 
