VICE-PRESIDENTS.

The Right Hon. the Earl of Cork and Orrery, Lord Lieutenant of Somer

set

The Most Hon. the Marquis of Bath

The Right Hon. and Right Rev. the Lord Bishop of Bath and Wells, D.D.
The Right Rev. the Bishop of Clifton, D.D.
The Right Worshipful the Mayor of Bath.

F.R.S., The Right Worshipful the Mayor of Bristol
Sir F. A. Abel, C.B., D.C.L., F.R.S., V.P.C.S..
The Venerable the Archdeacon of Bath, M.A.

The Rev. Leonard Blomefield, M.A., F.L.S., F.G.S.

Professor Michael Foster, M.Á., M.D., LL.D., Sec. R.S., F.L.S., F.C.S.

W. S. Gore-Langton, Esq., J.P., D.L.

H. D. Skrine, Esq., J.P., D.L.

E. R. Wodehouse, Esq., M.P.

Colonel R. P. Laurie, C.B., M.P.
Jerom Murch, Esq., J.P., D.L...

His Grace the Duke of Northumberland, K.G., D.C.L., LL.D., Lord
Lieutenant of Northumberland...

The Right Hon. the Earl of Durham, Lord Lieutenant of Durham....
The Right Hon. the Earl of Ravensworth..
The Right Rev. the Lord Bishop of Newcastle, D.D.
The Right Hon. Lord Armstrong, C.B., D.C.L., LL.D., F.R.S..
The Right Hon. John Morley, M.P., LL.D.

The Very Rev. the Warden of the University of Durham, D.D.
The Right Worshipful the Mayor of Newcastle ........
The Worshipful the Mayor of Gateshead

Sir L Lowthian Bell, Bart., D.O.L., F.R.S., F.C.S., M.Inst.C.E..
Sir Charles Mark Palmer, Bart., M.P.

His Grace the Duke of Devonshire, K.G., M.A., LL.D., F.R.S., F.G.S.,
F.R.G.S.

The Most Hon. the Marquess of Ripon, K.G., G.C.S.I., C.I.E., D.C.L.,
F.R.S., F.L.S., F.R.G.S.

The Right Hon. the Earl Fitzwilliam, K.G., F.R.G.S..........

SIR FREDERICK AUGUSTUS ABEL, C.B., D.C.L., D.Sc., The Right Rev. the Lord Bishop of Ripon, D.D..
F.R.S., P.P.C.S., Hon. M.Inst.C.E.

LEEDS, September 3, 1890.

The Right Hon. Sir Lyon Playfair, K.C.B., Ph.D., LL.D., M.P., F.R.S.,
F.C.S.

...

The Right Hon. W. L. Jackson, M.P., F.S.S.
The Right Worshipful the Mayor of Leeds
Sir James Kitson, Bart., M.Inst.C.E., F.R.G.S..
Sir Andrew Fairbairn, M.A.

The Right Hon. Lord Windsor, Lord Lieutenant of Glamorganshire
The Most Hon. the Marquess of Bute, K.T.

The Right Hon. Lord Rayleigh, M.A., D.C.L., LL.D., Sec.R.S., F.R.A.S.,
F.R.G.S.

WILLIAM HUGGINS, Esq., D.C.L., LL.D., Ph.D., F.R.S., The Right Hon. Lord Tredegar
F.R.A.S., Hon. F.R.S.E.

CARDIFF, August 19, 1891.

The Right Hon. Lord Aberdare, G.C.B., F.R.S., F.R.G.S.. Sir J. T. D. Llewelyn, Bart., F.Z.S..

Sir Archibald Geikie, LL.D., D.Sc., For.Sec.R.S., F.R.S.E., Pres.G.S., Director-General of the Geological Survey of the United Kingdom Sir Robert Ball, LL.D., F.R.S., F.R.A.S., Royal Astronomer of Ireland

Professor P. Phillips Bedson, D.Sc., F.C.S.
Professor J. Herman Merivale, M.A.

J. Rawlinson Ford, Esq.

Sydney Lupton, Esq., M.A., F.C.S.
Professor L. C. Miall, F.L.S., F.G.S.
Professor A. Smithells, B.Sc., F.C.S.

R. W. Atkinson, Esq., B.Sc., F.C.S., F.I.C.
Professor H. W. Lloyd Tanner, M.A., F.R.A.S.

Presidents and Secretaries of the Sections of the Association.

Date and Place

Presidents

Secretaries

MATHEMATICAL AND PHYSICAL SCIENCES.

COMMITTEE OF SCIENCES, I.-MATHEMATICS AND GENERAL PHYSICS.

Prof. Forbes.

1832. Oxford...... | Davies Gilbert, D.C.L., F.R.S. | Rev. H. Coddington.
1833. Cambridge Sir D. Brewster, F.R.S.
1834. Edinburgh Rev. W. Whewell, F.R.S. Prof. Forbes, Prof. Lloyd.

SECTION A.-MATHEMATICS AND PHYSICS.

1835. Dublin...... Rev. Dr. Robinson
1836. Bristol...... Rev. William Whewell, F.R.S.
1837. Liverpool... Sir D. Brewster, F.R.S.

......

Prof. Sir W. R. Hamilton, Prof.
Wheatstone.

Prof. Forbes, W. S. Harris, F. W.
Jerrard.

W. S. Harris, Rev. Prof. Powell,
Prof. Stevelly.

1838. Newcastle Sir J. F. W. Herschel, Bart., Rev. Prof. Chevallier, Major Sabine,

F.R.S.

1839. Birmingham Rev. Prof. Whewell, F.R.S....

1840. Glasgow ... Prof. Forbes, F.R.S.............

1841. Plymouth Rev. Prof. Lloyd, F.R.S....... 1842. Manchester Very Rev. G. Peacock, D.D., F.R.S.

...

Prof. Stevelly.

J. D. Chance, W. Snow Harris, Prof.
Stevelly.

Rev. Dr. Forbes, Prof. Stevelly,
Arch. Smith.

Prof. Stevelly.

Prof. M'Culloch, Prof. Stevelly, Rev.
W. Scoresby.

J. Nott, Prof. Stevelly.
Rev. Wm. Hey, Prof. Stevelly.

1843. Cork......... Prof. M'Culloch, M.R.I.A. 1844. York...... The Earl of Rosse, F.R.S. 1845. Cambridge The Very Rev. the Dean of Rev. H. Goodwin, Prof. Stevelly,

1846. Southamp- Sir John F. W. Herschel, John Drew, Dr. Stevelly, G. G. Bart., F.R.S.

ton.

Stokes.

1847. Oxford...... Rev. Prof. Powell, M.A., Rev. H. Price, Prof. Stevelly, G. G. F.R.S. Stokes.

...

1848. Swansea Lord Wrottesley, F.R.S. Dr. Stevelly, G. G. Stokes. 1849. Birmingham William Hopkins, F.R.S....... Prof. Stevelly, G. G. Stokes, W. Ridout Wills.

1850. Edinburgh Prof. J. D. Forbes, F.R.S., W. J.Macquorn Rankine, Prof.Smyth, Sec. R.S.E. Prof. Stevelly, Prof. G. G. Stokes. 1851. Ipswich Rev. W. Whewell, D.D., S. Jackson, W. J. Macquorn Rankine,

...

F.R.S.

1852. Belfast...... Prof. W.

1853. Hull.........

Prof. Stevelly, Prof. G. G. Stokes. Thomson, M.A., Prof. Dixon, W. J. Macquorn Rankine, Prof. Stevelly, J. Tyndall.

F.R.S. L. & E.

The Very Rev. the Dean of B. Blaydes Haworth, J. D. Sollitt,
Ely, F.R.S.

Prof. Stevelly, J. Welsh.

Date and Place

Presidents

Secretaries

1854. Liverpool... Prof. G. G. Stokes, M.A., Sec. J. Hartnup, H. G. Puckle, Prof.

1855. Glasgow Rev. Prof. Kelland, M.A.,

R.S.

F.R.S. L. & E.

1856. Cheltenham Rev. R. Walker, M.A., F.R.S.

Stevelly, J. Tyndall, J. Welsh.
Rev. Dr. Forbes, Prof. D. Gray, Prof.
Tyndall.

C. Brooke, Rev, T. A. Southwood,
Prof. Stevelly, Rev. J. C. Turnbull.

1857. Dublin...... Rev. T. R. Robinson, D.D., Prof. Curtis, Prof. Hennessy, P. A.

1858. Leeds

F.R.S., M.R.I.A.

Ninnis, W. J. Macquorn Rankine,
Prof. Stevelly.

Rev. W. Whewell, D.D., Rev. S. Earnshaw, J. P. Hennessy,
V.P.R.S.
Prof. Stevelly, H. J. S. Smith, Prof.
Tyndall.

1859. Aberdeen... The Earl of Rosse, M.A., K.P.,

F.R.S.

1860. Oxford...... Rev. B. Price, M.A., F.R.S....

1861. Manchester G. B. Airy, M.A., D.C.L.,
F.R.S.

1862. Cambridge Prof. G. G. Stokes, M.A.,
F.R.S.
1863. Newcastle Prof. W. J. Macquorn Rankine,
C.E., F.R.S.

1864. Bath......... Prof. Cayley, M.A., F.R.S., F.R.A.S.

1865. Birmingham W. Spottiswoode, M.A.,F.R.S.,

F.R.A.S.

J. P. Hennessy, Prof. Maxwell, H.
J. S. Smith, Prof. Stevelly.
Rev. G. C. Bell, Rev. T. Rennison,
Prof. Stevelly.

Prof. R. B. Clifton, Prof. H. J. S.
Smith, Prof. Stevelly.

Prof. R. B. Clifton, Prof. H. J. S.
Smith, Prof. Stevelly.

Rev. N. Ferrers, Prof. Fuller, F.
Jenkin, Prof. Stevelly, Rev. C. T.
Whitley.

Prof. Fuller, F. Jenkin, Rev. G.
Buckle, Prof. Stevelly.

Rev. T. N. Hutchinson, F. Jenkin, G.
S. Mathews, Prof. H. J. S. Smith,
J. M. Wilson.

1866. Nottingham Prof. Wheatstone, D.C.L., Fleeming Jenkin, Prof. H. J.S.Smith,

1867. Dundee

Prof. Sir W. Thomson, D.C.L., Rev. G. Buckle, Prof. G. C. Foster,
F.R.S.

1868. Norwich Prof. J. Tyndall,

...

Rev. S. N. Swann.

Prof. Fuller, Prof. Swan.

LL.D.,

F.R.S.

Prof. G. C. Foster, Rev. R. Harley,
R. B. Hayward.

1872. Brighton... W. De La Rue, D.C.L., F.R.S. Prof. W. K. Clifford, J. W. L. Glaisher,

1873. Bradford ... Prof. H. J. S. Smith, F.R.S.

Prof. A. S. Herschel, G. F. Rodwell. Prof. W. K. Clifford, Prof. Forbes, J. W.L.Glaisher, Prof. A. S. Herschel.

1874. Belfast...... Rev. Prof. J. H. Jellett, M.A., J. W. L. Glaisher, Prof. Herschel,

M.R.I.A.

Randal Nixon, J. Perry, G. F.
Rodwell.

1875. Bristol...... Prof. Balfour Stewart, M.A., Prof. W. F. Barrett, J.W.L. Glaisher, C. T. Hudson, G. F. Rodwell.

LL.D., F.R.S.

1876. Glasgow... Prof. Sir W. Thomson, M.A., Prof. W. F. Barrett, J. T. Bottomley,

LL.D., F.R.S.

Secretaries

W. E. Ayrton, J. W. L. Glaisher,
Dr. O. J. Lodge, D. MacAlister.
Prof. W. E. Ayrton, Prof. O. J. Lodge,
D. MacAlister, Rev. W. Routh.
W. M. Hicks, Prof. O. J. Lodge,
D. MacAlister, Rev. G. Richard-

son.

W. M. Hicks, Prof. O. J. Lodge,
D. MacAlister, Prof. R. C. Rowe.
C. Carpmael, W. M. Hicks, Prof. A.
Johnson, Prof. O. J. Lodge, Dr. D.
MacAlister.

R. E. Baynes, R. T. Glazebrook, Prof.
W. M. Hicks, Prof. W. Ingram.
R. E. Baynes, R. T. Glazebrook, Prof.
J. H. Poynting, W. N. Shaw.

1887. Manchester Prof. Sir R. S. Ball, M.A., R. E. Baynes, R. T. Glazebrook, Prof.

H. Lamb, W. N. Shaw.

R. E. Baynes, R. T. Glazebrook, A.
Lodge, W. N. Shaw.

R. E. Baynes, R. T. Glazebrook, Prof.
A. Lodge, W. N. Shaw, Prof. H.
Stroud.

Sc.D., R. T. Glazebrook, Prof. A. Lodge,
W. N. Shaw, Prof. W. Stroud.
R. E. Baynes, J. Larmor, Prof. A.
Lodge, Prof. A. L. Selby.

D.Sc.,

CHEMICAL SCIENCE.

COMMITTEE OF SCIENCES, II.-CHEMISTRY, MINERALOGY.

1832. Oxford...... | John Dalton, D.C.L., F.R.S. 1833. Cambridge John Dalton, D.C.L., F.R.S. 1834. Edinburgh Dr. Hope.........

James F. W. Johnston.

Prof. Miller.

Mr. Johnston, Dr. Christison.

SECTION B.-CHEMISTRY AND MINERALOGY.

Dr. Apjohn, Prof. Johnston.
Dr. Apjohn, Dr. C. Henry, W. Hera-
path.

Prof. Johnston, Prof. Miller, Dr.
Reynolds.

Prof. Miller, H. L. Pattinson, Thomas
Richardson.

Dr. Golding Bird, Dr. J. B. Melson.
Dr. R. D. Thomson, Dr. T. Clark,
Dr. L. Playfair.

J. Prideaux, Robert Hunt, W. M.
Tweedy.

Dr. L. Playfair, R. Hunt, J. Graham.
R. Hunt, Dr. Sweeny.

Dr. L. Playfair, E. Solly, T. H. Barker.
R. Hunt, J. P. Joule, Prof. Miller,
E. Solly.

Dr. Miller, R. Hunt, W. Randall.