BLACKBURN (HUGH) ELEMENTS OF PLANE
TRIGONOMETRY, for the use of the Junior Class in
Mathematics in the University of Glasgow. BY HUGH
BLACKBURN, M.A., late Professor of Mathematics in the
University of Glasgow. Globe 8vo.
Is. 6d.

BOOLE-Works by G. BOOLE, D. C.L., F.R.S., late Professor of Mathematics in the Queen's University, Ireland.

A TREATISE ON DIFFERENTIAL EQUATIONS. Third and Revised Edition. Edited by I. TODHUNTER. Crown 8vo. 14s.

A TREATISE ON DIFFERENTIAL EQUATIONS.
Supplementary Volume. Edited by I. TODhunter.
8vo. 8s. 6d.

Crown

10s. 6d.

THE CALCULUS OF FINITE DIFFERENCES. Third Edition, revised by J. F. MOULTON. Cr. 8vo. BROOK-SMITH (J.)—ARITHMETIC IN THEORY AND PRACTICE. By J. BROOK-SMITH, M.A., LL.B., St. John's College, Cambridge; Barrister-at-Law; one of the Masters of Cheltenham College. New Edition, revised. Crown 8vo. 4s. 6d.

CAMBRIDGE SENATE-HOUSE PROBLEMS and RIDERS, WITH SOLUTIONS:—

1875-PROBLEMS AND RIDERS. By A. G. Greenhill,
M.A. Crown 8vo. 8s. 6d.

1878-SOLUTIONS OF SENATE-HOUSE PROBLEMS.
By the Mathematical Moderators and Examiners. Edited by
J. W. L. GLAISHER, M.A., Fellow of Trinity College,
Cambridge. 125.

CANDLER-HELP TO ARITHMETIC. Designed for the use of Schools. By H. CANDLER, M.A., Mathematical Master of Uppingham School. Extra fcap. 8vo. 2s. 6d.

CHEYNE AN ELEMENTARY TREATISE ON THE PLANETARY THEORY. By C. H. H. CHEYNE, M.A., F.R.A.S. With a Collection of Problems. Second Edition. Crown 8vo. 6s. 6d.

CHRISTIE A COLLECTION OF ELEMENTARY TESTQUESTIONS IN PURE AND MIXED MATHEMATICS; with Answers and Appendices on Synthetic Division, and on the Solution of Numerical Equations by Horner's Method. By JAMES R. CHRISTIE, F.R.S., Royal Military Academy, Woolwich. Crown 8vo. 8s. 6d.

CLIFFORD -THE ELEMENTS OF DYNAMIC. An Introduction to the Study of Motion and Rest in Solid and Fluid Bodies. By W. K. CLIFFORD, F.R.S., late Professor of Applied Mathematics and Mechanics at University College, London. Part I.-KINEMATIC. Crown 8vo. 7s. 6d.

CONSTABLE-GEOMETRICAL EXERCISES FOR BE

GINNERS. By SAMUEL Constable. Crown 8vo. 35. 6d.

CUMMING AN INTRODUCTION TO THE THEORY OF ELECTRICITY. By LINNEUS CUMMING, M.A., one of the Masters of Rugby School. With Illustrations. Crown 8vo. 8s. 6d.

CUTHBERTSON-EUCLIDIAN GEOMETRY. BY FRANCIS CUTHBERTSON, M.A., LL.D., Head Mathematical Master of the City of London School. Extra fcap. 8vo. 45. 6d.

DALTON-Works by the Rev. T. DALTON, M.A., Assistant-
Master of Eton College.

RULES AND EXAMPLES IN ARITHMETIC. New
Edition. 18mo. 2s. 6d. [Answers to the Examples are appended.
RULES AND EXAMPLES IN ALGEBRA. Part I.
New Edition. 18mo. 25. Part II. 18mo.

2s. 6d.

DAY-PROPERTIES OF CONIC SECTIONS PROVED GEOMETRICALLY. Part I. THE ELLIPSE. With Problems. By the Rev. H. G. DAY, M.A. 8vo. 3s. 6d. DODGSON-EUCLID, Books I. and II. Edited by CHARLES

L. DODGSON, M. A., Student and late Mathematical Lecturer of Christ Church, Oxford. Second Edition, with words substituted for the Algebraical Symbols used in the First Edition. Crown Svo.

25.

DREW-GEOMETRICAL TREATISE ON CONIC SECTIONS. By W. H. DREW, M.A., St. John's College, Cambridge. New Edition, enlarged. Crown 8vo. 5s. SOLUTIONS TO THE PROBLEMS IN DREW'S CONIC SECTIONS. Crown 8vo. 4s. 6d.

DYER EXERCISES IN ANALYTICAL GEOMETRY. Compiled and arranged by J. M. DYER, M. A., Senior Mathematical Master in the Classical Department of Cheltenham College. With Illustrations. Crown 8vo. 4s. 6d.

EDGAR (J. H.) and PRITCHARD (G. S.)—NOTE-BOOK
ON PRACTICAL SOLID OR DESCRIPTIVE GEO-
METRY. Containing Problems with help for Solutions. By
J. H. EDGAR, M.A., Lecturer on Mechanical Drawing at the
Royal School of Mines, and G. S. PRITCHARD. Fourth
Edition, revised by ARTHUR MEEZE. Globe 8vo. 4s. 6d.
FERRERS-Works by the Rev. N. M. FERRERS, M.A., Fellow
and Master of Gonville and Caius College, Cambridge.

AN ELEMENTARY TREATISE ON TRILINEAR
CO-ORDINATES, the Method of Reciprocal Polars, and the
Theory of Projectors. New Edition, revised. Crown 8vo. 6s. 6d.
AN ELEMENTARY TREATISE ON SPHERICAL
HARMONICS, AND SUBJECTS CONNECTED WITH
THEM. Crown 8vo. 7s. 6d.

FROST-Works by PERCIVAL FROST, M.A., formerly Fellow of St. John's College, Cambridge; Mathematical Lecturer at King's College.

ON

CURVE

AN ELEMENTARY TREATISE
TRACING. By PERCIVAL FROST, M.A. 8vo. 125.

SOLID GEOMETRY. A New Edition, revised and enlarged,
of the Treatise by FROST and WOLSTENHOLME. In 2 Vols.
Vol. I. 8vo. 16s.

GODFRAY-Works by HUGH GODFRAY, M.A., Mathematical
Lecturer at Pembroke College, Cambridge.

A TREATISE ON ASTRONOMY, for the Use of Colleges
and Schools. New Edition. 8vo.
12s. 6d.

AN ELEMENTARY TREATISE ON THE LUNAR
THEORY, with a Brief Sketch of the Problem up to the time
of Newton. Second Edition, revised. Crown 8vo. 5s. 6d.

HEMMING-AN ELEMENTARY TREATISE ON THE DIFFERENTIAL AND INTEGRAL CALCULUS, for the Use of Colleges and Schools. By G. W. HEMMING, M.A., Fellow of St. John's College, Cambridge. Second Edition, with Corrections and Additions. 8vo. 9s.

JACKSON

GEOMETRICAL CONIC SECTIONS. An Elementary Treatise in which the Conic Sections are defined as the Plane Sections of a Cone, and treated by the Method of Projection. By J. STUART JACKSON, M.A., late Fellow of Gonville and Caius College, Cambridge. Crown 8vo. 4s. 6d. JELLET (JOHN H.)-A TREATISE ON THE THEORY OF FRICTION. By JOHN H. JELLET, B.D., Provost of Trinity College, Dublin; President of the Royal Irish Academy. 8vo. 8s. 6d.

JONES and

CHEYNE--ALGEBRAICAL

EXERCISES.

Progressively Arranged. By the Rev. C. A. JONES, M. A., and
C. H. CHEYNE, M.A., F.R.A.S., Mathematical Masters of
Westminster School. New Edition. 18mo. 2s. 6d.

7s. 6d.

KELLAND and TAIT-INTRODUCTION TO QUATER-
NIONS, with numerous examples. By P. KELLAND, M.A.,
F. R.S., and P. G. TAIT, M.A., Professors in the Department
of Mathematics in the University of Edinburgh. Second
Edition. Crown 8vo.
KITCHENER-A GEOMETRICAL NOTE-BOOK, containing
Easy Problems in Geometrical Drawing preparatory to the
Study of Geometry. For the use of Schools. By F. E.
KITCHENER, M.A., Mathematical Master at Rugby. New
Edition. 4to. 25.

LOCK-ELEMENTARY TRIGONOMETRY. By Rev. J. B.
Lock, M.A., Fellow of Caius College, Cambridge; Assistant-
Master at Eton. Globe 8vo. 4s. 6d.

HIGHER TRIGONOMETRY.
Crown 8vo.

By the same Author. [In the press. LUPTON-ELEMENTARY CHEMICAL ARITHMETIC. With 1,100 Problems. By SYDNEY LUPTON, M. A., AssistantMaster in Harrow School. Globe 8vo. 5s.

MAULT-NATURAL GEOMETRY: an Introduction to the Logical Study of Mathematics. For Schools and Technical Classes. With Explanatory Models, based upon the Tachymetrical works of Ed. Lagout. By A. MAULT. 18mo. IS. Models to Illustrate the above, in Box, 12s. 6d.

MERRIMAN

ELEMENTS OF THE METHOD

OF

LEAST SQUARES. By MANSFIELD MERRIMAN, Ph.D. Professor of Civil and Mechanical Engineering, Lehigh University, Bethlehem, Penn. Crown 8vo. 7s. 6d.

MILLAR-ELEMENTS OF DESCRIPTIVE GEOMETRY. By J. B. MILLAR, C.E., Assistant Lecturer in Engineering in Owens College, Manchester. Crown 8vo. 6.s.

MORGAN-A COLLECTION OF PROBLEMS AND EXAMPLES IN MATHEMATICS. With Answers. By H. A. MORGAN, M.A., Sadlerian and Mathematical Lecturer of Jesus College, Cambridge. Crown 8vo. 6s. 6d. MUIR-A TREATISE ON THE THEORY OF DETERMINANTS. With graduated sets of Examples. For use in Colleges and Schools. By THOS. MUIR, M.A., F. R.S. E., Mathematical Master in the High School of Glasgow. Crown 8vo. 7s. 6d.

NEWTON'S PRINCIPIA.

and Professor BLACKBURN.

Edited by Prof. Sir W. THOMSON 4to, cloth.

31s. 6d.

THE FIRST THREE SECTIONS OF NEWTON'S
PRINCIPIA. With Notes and Illustrations. Also a Col-
lection of Problems, principally intended as Examples of
Newton's Methods. By PERCIVAL FROST, M.A. Third
Edition. 8vo. 125.

PARKINSON-Works by S. PARKINSON, D.D., F.R.S., Tutor and Prælector of St. John's College, Cambridge.

AN ELEMENTARY TREATISE ON MECHANICS.
For the Use of the Junior Classes at the University and the
Higher Classes in Schools. With a Collection of Examples.
Sixth Edition, revised. Crown 8vo, cloth. 9s. 6d.

A TREATISE ON OPTICS. New Edition, revised and
enlarged. Crown 8vo, cloth. IOS. 6d.