negal ;-Prof. H. Hennessy, on the Vertical Movements of the Atmosphere considered in connexion with Storms and Changes of Weather ;-Report of Committee on the application of Gauss's General Theory of Terrestrial Magnetism to the Magnetic Variations ;---Fleeming Jenkin, on Thermo-electric Currents in Circuits of one Metal;-W. Fairbairn, on the Mechanical Properties of Iron Projectiles at High Velocities;-A. Cayley, Report on the Progress of the Solution of certain Special Problems of Dynamics;-Prof. G. G. Stokes, Report on Double Refraction;-Fourth Report of the Committee on Steamship Performance ;G. J. Symons, on the Fall of Rain in the British Isles in 1860 and 1861;-J. Ball, on Thermometric Observations in the Alps ;-J. G. Jeffreys, Report of the Committee for Dredging on the N. and E. Coasts of Scotland;-Report of the Committee on Technical and Scientific Evidence in Courts of Law ;-James Glaisher, Account of Eight Balloon Ascents in 1862;— Prof. H. J. S. Smith, Report on the Theory of Numbers, Part IV.

Together with the Transactions of the Sections, the Rev. Prof. R. Willis's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE THIRTY-THIRD MEETING, at Newcastle-upon-Tyne, August and September 1863, Published at £1 58.

CONTENTS:-Report of the Committee on the Application of Gun-cotton to Warlike Purposes;-A. Matthiessen, Report on the Chemical Nature of Alloys;-Report of the Committee on the Chemical and Mineralogical Constitution of the Granites of Donegal, and on the Rocks associated with them;-J. G. Jeffreys, Report of the Committee appointed for Exploring the Coasts of Shetland by means of the Dredge;-G. D. Gibb, Report on the Physiological Effects of the Bromide of Ammonium ;-C. K. Aken, on the Transmutation of Spectral Rays, Part I. ;-Dr. Robinson, Report of the Committee on Fog Signals;-Report of the Committee on Standards of Electrical Resistance ;-E. Smith, Abstract of Report by the Indian Government on the Foods used by the Free and Jail Populations in India ;-A. Gages, Synthetical Researches on the Formation of Minerals, &c.;-R. Mallet, Preliminary Report on the Experimental Determination of the Temperatures of Volcanic Foci, and of the Temperature, State of Saturation, and Velocity of the issuing Gases and Vapours ;- Report of the Committee on Observations of Luminous Meteors;-Fifth Report of the Committee on Steamship Performance ;-G. J. Allman, Report on the Present State of our Knowledge of the Reproductive System in the Hydroida;-J. Glaisher, Account of Five Balloon Ascents made in 1863;-P. P. Carpenter, Supplementary Report on the Present State of our Knowledge with regard to the Mollusca of the West Coast of North America;-Professor Airy, Report on Steam-boiler Explosions;-C. W. Siemens, Observations on the Electrical Resistance and Electrification of some Insulating Materials under Pressures up to 300 Atmospheres;-C. M. Palmer, on the Construction of Iron Ships and the Progress of Iron Shipbuilding on the Tyne, Wear, and Tees ;-Messrs. Richardson, Stevenson, and Clapham, on the Chemical Manufactures of the Northern Districts;-Messrs. Sopwith and Richardson, on the Local Manufacture of Lead, Copper, Zinc, Antimony, &c.;-Messrs. Daglish and Forster, on the Magnesian Limestone of Durham ;-I. L. Bell, on the Manufacture of Iron in connexion with the Northumberland and Durham Coal-field;-T. Spencer, on the Manufacture of Steel in the Northern District;-H. J. S. Smith, Report on the Theory of Numbers, Part V.

Together with the Transactions of the Sections, Sir William Armstrong's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE THIRTY-FOURTH MEETING, at Bath, September 1864, Published at 18s.

CONTENTS:-Report of the Committee for Observations of Luminous Meteors;-Report of the Committee on the best means of providing for a Uniformity of Weights and Measures;-T. S. Cobbold, Report of Experiments respecting the Development and Migration of the Entozoa;-B. W. Richardson, Report on the Physiological Action of Nitrite of Amyl; -J. Oldham, Report of the Committee on Tidal Observations ;-G. S. Brady, Report on deep-sea Dredging on the Coasts of Northumberland and Durham in 1864;-J. Glaisher, Account of Nine Balloon Ascents made in 1863 and 1864;—J. G. Jeffreys, Further Report on Shetland Dredgings;-Report of the Committee on the Distribution of the Organic Remains of the North Staffordshire Coal-field;- Report of the Committee on Standards of Electrical Resistance;-G. J. Symons, on the Fall of Rain in the British Isles in 1862 and 1863;-W. Fairbairn, Preliminary Investigation of the Mechanical Properties of the proposed Atlantic Cable.

Together with the Transactions of the Sections, Sir Charles Lyell's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE THIRTY-FIFTH MEETING, at Birmingham, September 1865, Published at £1 5s.

CONTENTS:-J. G. Jeffreys, Report on Dredging among the Channel Isles ;-F. Buckland, Report on the Cultivation of Oysters by Natural and Artificial Methods;-Report of the Committee for exploring Kent's Cavern ;-Report of the Committee on Zoological Nomenclature;-Report on the Distribution of the Organic Remains of the North Staffordshire Coal-field;-Report on the Marine Fauna and Flora of the South Coast of Devon and Cornwall;-Interim Report on the Resistance of Water to Floating and Immersed Bodies ;-Report on Observations of Luminous Meteors ;-Report on Dredging on the Coast of Aberdeenshire;-J. Glaisher, Account of Three Balloon Ascents;-Interim Report on the Transmis sion of Sound under Water;-G. J. Symons, on the Rainfall of the British Isles;-W. Fairbairn, on the Strength of Materials considered in relation to the Construction of Iron Ships; -Report of the Gun-Cotton Committee;-A. F. Osler, on the Horary and Diurnal Variations in the Direction and Motion of the Air at Wrottesley, Liverpool, and Birmingham ;-B. W. Richardson, Second Report on the Physiological Action of certain of the Amyl Compounds; -Report on further Researches in the Lingula-flags of South Wales;-Report of the Lunar Committee for Mapping the Surface of the Moon;-Report on Standards of Electrical Resistance; -Report of the Committee appointed to communicate with the Russian Government respecting Magnetical Observations at Tiflis ;-Appendix to Report on the Distribution of the Vertebrate Remains from the North Staffordshire Coal-field;-H. Woodward, First Report on the Structure and Classification of the Fossil Crustacea;-H. J. S. Smith, Report on the Theory of Numbers, Part VI.;-Report on the best means of providing for a Uniformity of Weights and Measures, with reference to the interests of Science;-A. G. Findlay, on the Bed of the Ocean;-Professor A. W. Williamson, on the Composition of Gases evolved by the Bath Spring called King's Bath.

Together with the Transactions of the Sections, Professor Phillips's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE THIRTY-SIXTH MEETING, at Nottingham, August 1866, Published at £1 48.

CONTENTS:-Second Report on Kent's Cavern, Devonshire;-A. Matthiessen, Preliminary Report on the Chemical Nature of Cast Iron ;-Report on Observations of Luminous Meteors; -W. S. Mitchell, Report on the Alum Bay Leaf-bed;-Report on the Resistance of Water to Floating and Immersed Bodies;-Dr. Norris, Report on Muscular Irritability; - Dr. Richardson, Report on the Physiological Action of certain compounds of Amyl and Ethyl;H. Woodward, Second Report on the Structure and Classification of the Fossil Crustacea;Second Report on the "Menevian Group," and the other Formations at St. David's, Pembrokeshire;-J. G. Jeffreys, Report on Dredging among the Hebrides ;-Rev. A. M. Norman, Report on the Coasts of the Hebrides, Part 11.;-J. Alder, Notices of some Invertebrata, in connexion with Mr. Jeffreys's Report;-G. S. Brady, Report on the Ostracoda dredged amongst the Hebrides;-Report on Dredging in the Moray Firth :-Report on the Transmission of Sound-Signals under Water;-Report of the Lunar Committee;-Report of the Rainfall Committee;-Report on the best means of providing for a Uniformity of Weights and Measures, with reference to the Interests of Science ;-J. Glaisher, Account of Three Balloon Ascents;-Report on the Extinct Birds of the Mascarene Islands;-Report on the penetration of Iron-clad Ships by Steel Shot;-J. A. Wanklyn, Report on Isomerism among the Alcohols;-Report on Scientific Evidence in Courts of Law;-A. L. Adams, Second Report on Maltese Fossiliferous Caves, &c.

Together with the Transactions of the Sections, Mr. Grove's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE THIRTY-SEVENTH MEETING, at Dundee, September 1867, Published at £1 68.

CONTENTS:-Report of the Committee for Mapping the Surface of the Moon;-Third Report on Kent's Cavern, Devonshire;-On the present State of the Manufacture of Iron in Great Britain;-Third Report on the Structure and Classification of the Fossil Crustacea; -Report on the Physiological Action of the Methyl Compounds;-Preliminary Report on the Exploration of the Plant-Beds of North Greenland ;-Report of the Steamship Performance Committee;-On the Meteorology of Port Louis in the Island of Mauritius;---On the Construction and Works of the Highland Railway ;-Experimental Researches on the Me

perties of Steel;-Report on the Marine Fauna and Flora of the South Coast of negal ;-Prof. Cornwall;-Supplement to a Report on the Extinct Didine Birds of the Mascaconnexion of Gards-Report on Observations of Luminous Meteors;-Fourth Report on Dredging Jong the Shetland Isles;-Preliminary Report on the Crustacea, &c., procured by the Shetland Dredging Committee in 1867;-Report on the Foraminifera obtained in the Shetland Seas;-Second Report of the Rainfall Committee;--Report on the best means of providing for a Uniformity of Weights and Measures, with reference to the Interests of Science; Report on Standards of Electrical Resistance.

Together with the Transactions of the Sections, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE THIRTY-EIGHTH MEETING, at Norwich, August 1868, Published at £1 58.

CONTENTS:-Report of the Lunar Committee;-Fourth Report on Kent's Cavern, Devonshire;-On Puddling Iron ;-Fourth Report on the Structure and Classification of the Fossil Crustacea;-Report on British Fossil Corals;-Report on Spectroscopic Investigations of Animal Substances;-Report of Steamship Performance Committee;-Spectrum Analysis of the Heavenly Bodies;-On Stellar Spectrometry ;-Report on the Physiological Action of the Methyl and allied Compounds;-Report on the Action of Mercury on the Biliary Secretion;-Last Report on Dredging among the Shetland Isles;-Reports on the Crustacea, &c., and on the Annelida and Foraminifera from the Shetland Dredgings;- Report on the Chemical Nature of Cast Iron, Part I.;—Interim Report on the Safety of Merchant Ships and their Passengers ;-Report on Observations of Luminous Meteors;-Preliminary Report on Mineral Veins containing Organic Remains;-Report on the desirability of Explorations between India and China;-Report of Rainfall Committee;-Report on Synthetical Researches on Organic Acids;-Report on Uniformity of Weights and Measures ;-Report of the Committee on Tidal Observations ;-Report of the Committee on Underground Temperature; -Changes of the Moon's Surface;-Report on Polyatomic Cyanides.

Together with the Transactions of the Sections, Dr. Hooker's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE THIRTY-NINTH MEETING, at Exeter, August 1869, Published at £1 2s.

CONTENTS:-Report on the Plant-beds of North Greenland ;-Report on the existing knowledge on the Stability, Propulsion, and Sea-going Qualities of Ships;-Report on Steam-boiler Explosions;-Preliminary Report on the Determination of the Gases existing in Solution in Well-waters;-The Pressure of Taxation on Real Property;-On the Chemical Reactions of Light discovered by Prof. Tyndall ;-On Fossils obtained at Kiltorkan Quarry, co. Kilkenny;-Report of the Lunar Committee;-Report on the Chemical Nature of Cast Iron;-Report on the Marine Fauna and Flora of the south coast of Devon and Cornwall;-Report on the Practicability of establishing "a Close Time" for the Protection of Indigenous Animals ;-Experimental Researches on the Mechanical Properties of Steel;-Second Report on British Fossil Corals;-Report of the Committee appointed to get cut and prepared Sections of Mountain-limestone Corals for Photographing;-Report on the rate of Increase of Underground Temperature;-Fifth Report on Kent's Cavern, Devonshire-Report on the Connexion between Chemical Constitution and Physiological Action;-On Emission, Absorption, and Reflection of Obscure Heat :-Report on Oliservations of Luminous Meteors;-Report on Uniformity of Weights and Measures;-Report on the Treatment and Utilization of Sewage ;-Supplement to Second Report of the Steamship-Performance Committee;-Report on Recent Progress in Elliptic and Hyperelliptic Functions; Report on Mineral Veins in Carboniferous Limestone and their Organic Contents;-Notes on the Foraminifera of Mineral Veins and the Adjacent Strata;-Report of the Rainfall Committee;-Interim Report on the Laws of the Flow and Action of Water containing Solid Matter in Suspension;-Interim Report on Agricultural Machinery ;— Report on the Physiological Action of Methyl and Allied Series;-On the Influence of Form considered in Relation to the Strength of Railway-axles and other portions of Machinery subjected to Rapid Alterations of Strain;-On the Penetration of Armour-plates with Long Shells of Large Capacity fired obliquely;-Report on Standardsof Electrical Resistance. Together with the Transactions of the Sections, Prof. Stokes's Address, and Recom, mendations of the Association and its Committees.

PROCEEDINGS OF THE FORTIETH MEETING, at Liverpool, September 1870, Published at 18s.

CONTENTS:-Report on Steam-boiler Explosions;-Report of the Committee on the Hæmatite Iron-ores of Great Britain and Ireland ;--Report on the Sedimentary Deposits of the River Onny;-Report on the Chemical. Nature of Cast Iron;-Report on the practicability of establishing "A Close Time" for the protection of Indigenous Animals ;-Report on Standards of Electrical Resistance;-Sixth Report on Kent's Cavern ;-Third Report on Underground Temperature;-Second Report of the Committee appointed to get cut and prepared Sections of Mountain-Limestone Corals;-Second Report on the Stability, Propulsion, and Sea-going Qualities of Ships;-Report on Earthquakes in Scotland;-Report on the Treatment and Utilization of Sewage ;-Report on Observations of Luminous Meteors, 1869-70;-Report on Recent Progress in Elliptic and Hyperelliptic Functions;Report on Tidal Observations;-On a new Steam-power Meter;-Report on the Action of the Methyl and Allied Series;-Report of the Rainfall Committee;-Report on the Heat generated in the Blood in the process of Arterialization;—Report on the best means of providing for Uniformity of Weights and Measures.

Together with the Transactions of the Sections, Prof. Huxley's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE FORTY-FIRST MEETING, at Edinburgh, August 1871, Published at 16s.

CONTENTS:-Seventh Report on Kent's Cavern ;-Fourth Report on Underground Temperature;-Report on Observations of Luminous Meteors, 1870-71;-Fifth Report on the Structure and Classification of the Fossil Crustacea;-Report for the purpose of urging on Her Majesty's Government the expediency of arranging and tabulating the results of the approaching Census in the three several parts of the United Kingdom in such a manner as to admit of ready and effective comparison;-Report for the purpose of Superintending the publication of Abstracts of Chemical papers;-Report of the Committee for discussing Observations of Lunar Objects suspected of change;-Second Provisional Report on the Thermal Conductivity of Metals;-Report on the Rainfall of the British Isles ;-Third Report on the British Fossil Corals ;-Report on the Heat generated in the Blood during the process of Arterialization;-Report of the Committee appointed to consider the subject of physiological Experimentation;-Report on the Physiological Action of Organic Chemical Compounds;-Report of the Committee appointed to get cut and prepared Sections of Mountain-Limestone Corals;-Second Report on Steam-Boiler Explosions;-Report on the Treatment and Utilization of Sewage;-Report on promoting the Foundation of Zoological Stations in different parts of the World ;-Preliminary Report on the Thermal Equivalents of the Oxides of Chlorine ;-Report on the practicability of establishing a "Close Time" for the protection of Indigenous Animals;-Report on Earthquakes in Scotland; Report on the best means of providing for a Uniformity of Weights and Measures;-Report on Tidal Observations.

Together with the Transactions of the Sections, Sir William Thomson's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE FORTY-SECOND MEETING, at Brighton, August 1872, Published at £1 4s.

CONTENTS-Report on the Gaussian Constants for the Year 1829;-Second Supplementary Report on the Extinct Birds of the Mascarene Islands;-Report of the Committee for Superintending the Monthly Reports of the Progress of Chemistry;-Report of the Committee on the best means of providing for a Uniformity of Weights and Measures;-Eighth Report on Kent's Cavern ;-Report on promoting the Foundation of Zoological Stations in different parts of the World ;-Fourth Report on the Fauna of South Devon;-Preliminary Report of the Committee appointed to Construct and Print Catalogues of Spectral Rays arranged upon a Scale of Wave-numbers;-Third Report on Steam-Boiler Explosions;Report on Observations of Luminous Meteors, 1871-72;-Experiments on the Surfacefriction experienced by a Plane moving through water;-Report of the Committee on the Antagonism between the Action of Active Substances;-Fifth Report on Underground Temperature;-Preliminary Report of the Committee on Siemens's Electrical-Resistance Pyrometer;-Fourth Report on the Treatment and Utilization of Sewage ;-Interim Report of the Committee on Instruments for Measuring the Speed of Ships and Currents;-Report on the Rainfall of the British Isles;-Report of the Committee on a Geographical Exploration of the Country of Moab;-Sur l'élimination des Fonctions Arbitrailes;- Report on the

Discovery of Fossils in certain remote parts of the North-western Highlande;-Report of the Committee on Earthquakes in Scotland;-Fourth Report on Carboniferous-Limestone Corals; -Report of the Committee to consider the mode in which new Inventions and Claims for Reward in respect of adopted Inventions are examined and dealt with by the different Departments of Government;-Report of the Committee for discussing Observations of Lunar Objects suspected of change;-Report on the Mollusca of Europe;-Report of the Committee for investigating the Chemical Constitution and Optical Properties of Essential Oils-Report on the practicability of establishing a "Close Time" for the preservation of indigenous animals ;-Sixth Report on the Structure and Classification of Fossil Crustacea; -Report of the Committee to organize an Expedition for observing the Solar Eclipse of Dec. 12, 1871; Preliminary Report of a Committee on Terato-embryological Inquiries;-Report on Recent Progress in Elliptic and Hyperelliptic Functions;-Report on Tidal Observations; -On the Brighton Waterworks ;-On Amsler's Planimeter.

Together with the Transactions of the Sections, Dr. Carpenter's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE FORTY-THIRD MEETING, at Bradford, September 1873, Published at £1 5s.

CONTENTS: Report of the Committee on Mathematical Tables;-Observations on the Application of Machinery to the cutting of Coal in Mines;-Concluding Report on the Maltese Fossil Elephants;-Report of the Committee for ascertaining the existence in different parts of the United Kingdom of any Erratic Blocks or Boulders ;--Fourth Report on Earthquakes in Scotland;-Ninth Report on Kent's Cavern ;-On the Flint and Chert Implements found in Kent's Cavern ;--Report of the Committee for investigating the Chemical Constitution and Optical Properties of Essential Oils ;-Report of inquiry into the Method of making Gold-assays;-Fifth Report on the Selection and Nomenclature of Dynamical and Electrical Units ;-Report of the Committee on the Labyrinthodonts of the Coal-measures; -Report of the Committee to construct and print Catalogues of Spectral Rays;—Report of the Committee appointed to explore the Settle Caves ;-Sixth Report on Underground Temperature;-Report on the Rainfall of the British Isles ;-Seventh Report on Researches in Fossil Crustacea;-Report on Recent Progress in Elliptic and Hyperelliptic Functions;Report on the desirability of establishing a "Close Time" for the preservation of indigenous animals;-Report on Luminous Meteors;-On the visibility of the dark side of Venus;Report of the Committee for the foundation of Zoological Stations in different parts of the world;-Second Report of the Committee for collecting Fossils from North-western Scotland-Fifth Report on the Treatment and Utilization of Sewage;-Report of the Committee on Monthly Reports of the Progress of Chemistry;-On the Bradford Waterworks;Report on the possibility of Improving the Methods of Instruction in Elementary Geometry; -Interim Report of the Committee on Instruments for Measuring the Speed of Ships, &c.; -Report of the Committee for Determinating High Temperatures by means of the Refrangibility of Light, evolved by Fluid or Solid Substances;-On a periodicity of Cyclones and Rainfall in connexion with Sun-spot periodicity;-Fifth Report on the Structure of Carboniferous-Limestone Corals;-Report of the Committee on preparing and publishing brief forms of Instructions for Travellers, Ethnologists, &c. ;-Preliminary Note from the Committee on the Influence of Forests on the Rainfall;-Report of Sub-Wealden Exploration Committee;-Report of the Committee on Machinery for obtaining a Record of the Roughness of the Sea and Measurement of Waves near shore;-Report on Science-Lectures and Organization ;-Second Report on Science-Lectures and Organization.

Together with the Transactions of the Sections, Professor A. W. Williamson's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE FORTY-FOURTH MEETING, at Belfast, August 1874, Published at £1 5s.

CONTENTS:-Tenth Report on Kent's Cavern ;-Report for investigating the Chemical Constitution and Optical Properties of Essential Oils;-Second Report of the Sub-Wealden Exploration Committee;-On the Recent Progress and Present State of Systematic Botany; -Report of the Committee for investigating the Nature of Intestinal Secretion;-Report of the Committee on the Teaching of Physics in Schools;-Preliminary Report for investigating Isomeric Cresols and their derivatives;-Third Report of the Committee for Collecting Fossils from localities in North-Western Scotland;-Report on the Rainfall of the British Isles;-On the Belfast Harbour;--Report of inquiry into the Method of making Goldassays;-Report of a Committee on Experiments to determine the Thermal Conductivities