ALDIS, J. S., M.A.; H.M. Inspector of Schools. ALLMAN, GEO. S., LL.D.; Professor of Mathematics in the Queen's University, Galway. ARMENANTE, Professor, Pesaro. BALL, ROBT. STAWELL, LL.D., F.R.S.; Professor of Astronomy in the University of Dublin. BATTAGLINI, GIUSEPPE; Professore di Matematiche nell' Università di Roma. BELTRAMI, Professor; University of Pisa. BERG, F. J. VAN DEN; Professor of Mathematics in Delft Polytechnic School. BESANT, W. H., M.A.; Cambridge. BIRCH, Rev. J. G., M.A.; Birmingham. BLACKWOOD, ELIZABETH; Boulogne. BLISSARD, Rev. J., B.A.; The Vicarage, Hampstead Norris, Berks.

BORCHARDT, Dr. C. W.; Victoria Strasse, Berlin.
BOSANQUET, R. H. M., M.A.; Fellow of St.
John's College, Oxford.

BROOKS, Professor E.; Millersville, Pennsylvania.
BROWN, A. CRUM, D.Sc.; Edinburgh.
BROWN, COLIN, Professor in the Andersonian
University, Glasgow.

BUCHHEIM, ARTHUR; New College, Oxford.
BURNSIDE, W. S., M.A.; Fellow and Tutor of
Trinity College, Dublin.

CAMPBELL, Capt. FRED.; Notting Hill, London.
CARR, G. S.; Caius College, Cambridge.
CASEY, JOHN, LL.D., F.R.S.; Prof. of Higher
Mathematics in the Catholic Univ. of Ireland.
CAVALLIN, C. B. S.; University of Upsala.
CAVE, A. W., B.A.; Magdalen College, Oxford.
CAYLEY, A., F.R.S.; Sadlerian Professor of Ma-
thematics in the University of Cambridge;
Member of the Institute of France, &c.
CHADWICK, W.; Fellow of Christ Ch., Oxford.
CHAKRAVARTI, BYOMAKESA; Presidency Col-
lege, Calcutta.

CHASE, PLINY EARLE, LL.D.; Prof. of Philosophy in Haverford College.

CLARKE, Colonel A. R., C.B., F.R.S.; Director of
the Ordnance Survey, Southampton.
CLIFFORD, W. K., M.A., F.R.S.; late Fellow of
Trinity College, Cambridge; Prof. of Applied
Mathematics in University College, London.
COCHEZ, Professor; Paris,

COCKLE, Hon. Sir J., Knt., M.A., F.R.S.; Chief
Justice of Queensland; President of the
Queensland Philosophical Society.
COHEN, ARTHUR, M.A., Q.C.; London.
COLSON, C. G., M.A.; University of St. Andrew's.
CONSTABLE, S.; Grammar School, Drogheda.
COTTERILL, J. H., M.A.; Royal School of Naval
Architecture, South Kensington.
COTTERILL, THOS., M.A.; London, late Fellow of
St. John's College, Cambridge.
CREMONA, LUIGI; Direttore della Scuola degli
Ingegneri, S. Pietro in Vincoli, Rome.
CROFTON, M. W., B.A., F.R.S.; Professor of Ma-
thematics and Mechanics in the Royal Mili-
tary Academy, Woolwich,
CULVERWELL, E. P., B.A.; Scholar of Trinity
College, Dublin.

DARBOUX, Professor; Paris.

DAVIS, R. F., B.A.; Wandsworth Common.
DAVIS, WILLIAM BARRETT, B.A. London.
DAY, Rev. H. G., M.A.; Riverside, Sevenoaks.
DICK, G. R., M. A.; Fellow of Caius Coll., Camb.
DOBSON, T., B.A.; Head Master of Hexham
Grammar School.

DRACH, S. M.; Barnsbury Street, London.
DUPAIN, J.C.; Professeur au Lycée d'Angoulême.
DYER, J. M., B.A.; Cheltenham College.
EASTERBY, W., B.A.; Grammar School, St. Asaph.
EASTON, BELLE; Lockport, New York.

EDMUNDSON, GEORGE; Brasenose Coll., Oxford.
EDWARDES, D.; Edgware.
ELLIOTT, E. B., M.A.; Fellow of Qu. Coll., Oxon.
ELLIS, ALEXANDER, J., F.R.S.; Kensington.
ESCOTT, ALBERT, M.A.; Head Master of the
Royal Hospital School, Greenwich.
EVANS, Prof. A. B., M.A.; Lockport, New York.
EVERETT, J. D., D.C.L.; Professor of Natural Phi-

losophy in the Queen's University, Belfast.
FICKLIN, JOSEPH; Professor of Mathematics and
Astronomy in the University of Missouri.
FORDE, S., M.A.; Oxford.
FORTEY, H., M.A.; Bellary, Madras Presidency.
FRY, Colonel JOHN H.; New York.
FUORTES, E.; University of Naples.
GALBRAITH,J.,M.A.; FellowofTrin.Coll., Dublin,
GALTON, FRANCIS, M.A., F.R.G.S.; London.
GALLATLY, W., B.A.; Highgate.
GARDINER, MARTIN; late Professor of Mathe-
matics in St. John's College, Sydney.
GENESE, R.W., M.A.; Sc. of St. John's Coll., Camb.
GERRANS, H. T., B.Á.; Christ Church, Oxford.
GLAISHER, J. W. L., M.A., F.R.S.; Fellow of
Trinity College, Cambridge.

GLASHAN, J. C., M.A.; Strathroy, Ontario.
GODFRAY, HUGH, M.A.; Newnham, Cambridge.
GODWARD, WILLIAM; Chelsea.
GREENFIELD, Rev. W. J., M.A.; Dulwich College.
GREENWOOD, JAMES M.; Kirksville, Missouri.
GRIFFITH, W.; Superintendent of Public Schools,
New London, Ohio, United States.
GRIFFITHS, J., M.A.; Fellow of Jesus Coll., Oxon.
HALL, Professor ASAPH, M.A.; Naval Observa-
tory, Washington.

HAMMOND, J., M.A.; King Edward's Sch., Bath.
HARKEMA, C.; University of St. Petersburgh.
HARLEY, Rev. ROBERT, F.R.S.; Vice-Master of
Mill Hill Grammar School.
HARRIS, H. W., B.A.; Trinity College, Dublin.
HART, Dr. DAVID S.; Stonington, Connecticut,
HART, H.; R.M. Academy, Woolwich.
HENDRICKS, J. E., M.A.; Des Moines, Iowa.
HERMITE, CH.; Membre de l'Institut, Paris.
HILL, Rev. E., M.A.; St. John's College, Camb.
HINTON, C. H.; Cheltenham College.
HIRST, Dr. T. A., F.R.S.; Director of Studies in
the Royal Naval College, Greenwich.
HOPKINS, Rev. G. H.; Egham, Surrey.
HOPKINSON, J., D.Sc., B.A., Manchester.
HUDSON, C. T., LL.D.; Manilla Hall, Clifton.
HUDSON, W. H. H., M.A.; Fellow of St. John's
College, Cambridge.

INGLEBY, C. M., M.A., LL.D., London.
JELLY, J. O., B.A.; Magdalen College, Oxford.
JENKINS, MORGAN, M.A.; London.
JENKINS, J. S.; Merton College, Oxford.
JOHNSON, J. M., B.A.; Radley College, Abingdon,
JOHNSON, W. W.; Annapolis, Maryland.
JOHNSTON, SWIFT; Trin. Coll., Dublin.
JONES, L. W., B.A.; Merton College, Oxford.
KELLAND, PHILIP, M.A.; Professor of Mathe

matics in the University of Edinburgh. KING, Q. W.; Royal Hospital Sch., Greenwich. KIRKMAN, Rev. T. P., M.A., F.R.S.; Croft Rectory, near Warrington.

KITCHIN, Rev. J. L., M.A.; Heavitree, Exeter.
KITTUDGE, LIZZIE A.; Boston, United States.
KNISELY, Rev.U.J.; Newcomerstown, Ohio, U.S.
KNOWLES, R., L.C.P.; Pentonville.
LADD, CHRISTINE; Professor of Natural Sciences

and Mathematics, Union Springs, New York. LAVERTY, W. H., M.A.; Public Examiner in the University of Oxford.

LAWRENCE, E. J.; formerly Fellow of Trinity College, Cambridge.

LEIDHOLD, R., M.A. Finsbury Park.
LEVETT, R., M.A.; King Edward's School,
Birmingham.

LEUDESDORF, C., M.A.; Fellow of Pembroke
College, Oxford.

LONG, W. S. F.; St. John's College, Cambridge. MCADAM, D. S.; Washington, Pennsylvania. MCCAY, W. S., M.A.; Fellow and Tutor of Trinity College, Dublin.

MCCOLL, HUGH; Rue Sibliquin, Boulogne.
MCDOWELL, J., M.A; Pembroke Coll., Camb.
MCLEOD, J., M.A.; K.M. Academy, Woolwich.
MACKENZIE, J. L., B.A.; Ind. College, Taunton.
MADDEN, W. M.; Trinity Parsonage, Wakefield.
MALET, J. C., M.A.; Trinity College, Dublin.
MANNHEIM, M.; Professeur à l'Ecole Poly-
technique, Paris.

MARTIN, ARTEMAS, M.A; Editor and Publisher
of the Mathematical Visitor, Erie, Pa.
MARTIN, Rev. H., D.D., M.A.; Examiner in Ma-
thematics in the University of Edinburgh.
MATHEWS, F. C., M.A.; London.
MATZ, F. P., M.A.; Beading, Pennsylvania.
MERRIFIELD, C. W., F.R.S.; Brook Green.
MERRIFIELD, J., LL.D., F.R.A.S.; Plymouth.
MERRICK, THOS.; Kensington Square, London.
MILLER, W. J. C., B.A.; 55, Netherwood Road,
West Kensington Park, London, W.
MINCHIN, G.M.,M.A.; Prof. in Cooper's Hill Coll.
MITCHESON, T., B.A., L.C.P.; City of London Sc.
MONCK, HY. STANLEY, M.A.; Prof. of Moral Phil-
osophy in the University of Dublin.
MONCOURT, Professor; Paris.
MOON, ROBERT, M.A.; late Fellow of Queen's
College, Cambridge, Cleveland Sq., London.
MOREL, Professor; Paris.

MORLEY, THOS., L.C.P.; Bromley, Kent.
MOULTON J. F., M.A.; Fellow of Christ's College,
Cambridge.

MURPHY, HUGH; Head Master of the Incorporated Society's School, Dublin. NARENDRA LAL DEY; Presidency Coll.,Calcutta. NASH, A. M., B.A.; Professor of Nat. Phil. and

Astronomy, Presidency College, Calcutta. NELSON, R. J., M.A.; Naval School, London. O'REGAN, JOHN; New Street, Limerick. ORCHARD, H. L., B.A., L.C.P.; Hampstead. PANTON, A. W., M.A.; Fellow of Trinity College, Dublin.

PHILLIPS, F. B. W.; Balliol College, Oxford.
PILLAI, C. K.; Trichy, Madras.

PIRIE, A., M.A.; University of St. Andrews.
POLIGNAC, Prince CAMILLE DE; Paris.
POLLEXFEN, H., B.A.; Windermere College.
PRUDDEN, FRANCES E.; Lockport, New York.
RAWSON, ROBERT; Havant, Hants.
RENSHAW, S. A.; Nottingham.
RILEY, R. E., B.A., Bournemouth.
RIPPIN, CHARLES R., M.A.; Woolwich Common.
ROBERTS, R. A., B.A.; Scholar of Trinity College,
Dublin.

ROBERTS, SAMUEL, M.A.; Tufnell Pk., London.
ROBERTS, Rev. W., M.A.; Senior Fellow Trinity
College, Dublin.

ROBERTS, W. R., M.A., Ex-Scholar of Trinity
College, Dublin.
ROSENTHAL, L. H.; Scholar of Trin. Coll., Dublin.
ROYDS, J., L.C.P.; Sheffield.

RÜCKER, A. W., B.A.; Professor of Mathematics
in the Yorkshire College of Science, Leeds.
RUGGERO, SIMONELLI; Università di Roma.
RUTTER, EDWARD; Sunderland.
SALMON, Rev. G., D.D., F.R.S.; Regius Professor
of Divinity in the University of Dublin.
SANDERS, J. B.; Bloomington, Indiana.
SANDERSON, Rev. T. J., M.A.; Royston, Cambs.
SARKAR, NILKANTHA, B.A.; Presidency Col-
lege, Calcutta.

SAVAGE, THOMAS, M.A.; Fellow of Pembroke College, Cambridge.

SCHEFFER, Professor; Des Moines, Iowa, U.S. SCOTT, JOSIAH; Judge of the Ohio Supreme Court, Bucyrus, United States.

SCOTT, R. F., M.A.; Fellow of St. John's College, Cambridge.

SEITZ, E. B.; Greenville, Ohio, United States. SERRET, Professor; Paris.

SHARP, W. J. C., M.A.; Grosvenor Square. SHARPE, J. W., M.A.; The Charterhouse. SHARPE, Rev. H. T., M.A.; Cherry Marham. SHEPHERD, A. J. P.; Queen's College, Oxford. SIDES, J. J.; Rue des Vieillards, Boulogne. SIVERLY, WALTER; Oil City, Pennsylvania. SMITH, C., M.A.; Sidney Sussex Coll., Camb. SPOTTISWOODE, WILLIAM, M.A., F.R.S.;

Grosvenor Place, London. STEIN, A.; Venice. STEPHEN, ST. JOHN, B.A.; Caius Coll., Cambridge. SYMONS, E. W.; University Coll., Oxford. SYLVESTER, J. J., LL.D., F.R.S.; Professor of Mathematics in Johns Hopkins University, Member of the Institute of France, &c. TAIT, P. G., M.A.; Professor of Natural Philosophy in the University of Edinburgh. TANNER, H. W. L., M.A.; Prof. of Mathematics and Physics, R. A. College, Cirencester. TARLETON, FRANCIS A., M.A.; Fellow of Trinity College, Dublin.

TAYLOR, Rev. C., M.A.; Fellow of St. John's College, Cambridge.

TAYLOR, H. M., M.A.; Fellow and Assistant Tutor
of Trinity College, Cambridge.
TAYLOR, J. H., B.A.; Cambridge.
TEBAY, SEPTIMUS, B.A.; Kearsley, Bolton.
THOMSON, F. D., M.A.; late Fellow of St. John's

Coll., Camb., Brinkley Rectory, Newmarket. TIMOTHY, J. E.; Lockport, New York. TODHUNTER, ISAAC, F.R.S.; Cambridge. TOMLINSON, H.; Christ Church, Oxford. TORELLI, GABRIEL; University of Naples. TORRY, Rev. A. F., M.A.; St. John's College, Cambridge.

TOWNSEND, Rev. R., M.A., F.R.S.; Professor of
Nat. Phil. in the University of Dublin, &c.
TRAILL, ANTHONY, M.A., M.D.; Fellow and
Tutor of Trinity College, Dublin.
TROWBRIDGE, DAVID; Waterburgh, New York.
TUCKER, R., M.A.; Mathematical Master in Uni-
versity College School, London.

TURRELL, I. H.; Cumminsville, Ohio.
VINCENZO, CECCHINI, University of Rome.
VINCENZO, JACOBINI, University of Rome.
VOSE, G. B.; Professor of Mechanics and Civil
Engineering, Washington, United States.
WALENN, W. H.; Mem. Phys. Society, London.
WALKER, J. J., M.A.; Vice-Principal of Uni-
versity Hall, Gordon Square, London.
WALMSLEY, J., B.A.; Eccles, Manchester.
WARD, ISABELLA M.; Capecure, Boulogne,
WARREN, R., M.A.; Trinity College, Dublin.
WATSON, STEPHEN; Haydonbridge.
WATSON, Rev. H. W., M.A.; late Fellow of Trinity
College, Cambridge.

WERTSCH, Fr.; Weimar.

WHITE, J. R., B.A.; Worcester Coll., Oxford.
WHITE, Rev. J., M.A.; Woolwich.
WHITWORTH, Rev. W. A., M.A.; Fellow of St.

John's Coll., Camb.; St John's Vicarage,
Hammersmith.

WILKINS, W.; Scholar of Trin. Coll., Dublin.
WILKINSON, Rev. M. M. U.; Norwich.
WILLIAMS, S. F; Liverpool College.
WILLIAMSON, B., M.A.; Fellow and Tutor of
Trinity College, Dublin.

WILSON, J. M., M.A.; Rugby School.
WILSON, Rev. J., M.A.; Rector of Bannockburn
Academy.

WILSON, Rev. J. R., M.A.; Royston, Cambs.
WILSON, Rev. R., D.D.; Chelsea.
WOLSTENHOLME, Rev. J., M.A.; Professor of
Mathematics in Cooper's Hill College.
WOOLHOUSE, W. S. B., F.R.A.S., &c.; London.
WRIGHT, Dr. S. H., M.A.; Penn Yan, New York.
WRIGHT, E., B.A.; Dungannon.
WRIGHT, Rev. W. J., Ph.D.; Pennsylvania.
YOUNG, J. R.; London.