Mathematics.
The Theory of Proportion. M. J. M. Hill, M.A., LL.D., Sc.D., F.R.S. Demy 8vo. 15 Figures. 6/- net.
Contents.—Magnitudes of the same Kind. Propositions relating to Magnitudes and their Multiples. The Relations between Multiples of the same Magnitude. Commensurable Magnitudes. Magnitudes of the same Kind which are not Multiples of the same Magnitude. Incommensurable Magnitudes. Extension of the Idea of Number. On the Ratios of Magnitudes which have no Common Measure. Properties of Equal Ratios. First Group of Propositions. Second Group of Propositions. Third Group of Propositions—Geometrical Applications of Stolz’s Theorem. Further Remarks on Irrational Numbers. The Existence of the Fourth Proportional. Commentary on the Fifth Book of Euclid’s Elements.
Elementary Plane Trigonometry. H. E. Piggott, M.A. Second Master and Head of Mathematical Department, Royal Naval College, Dartmouth. Late Director of Naval Studies at Cambridge, Formerly Scholar of Clare College, Cambridge. Crown 8vo. 7/6 net.
Contents.—The Tangent of an Acute Angle. The Sine and Cosine of an Acute Angle. Miscellaneous Application of the Sine, Cosine and Tangent. The Co-tangent, Secant, and Co-secant of an Acute Angle. Exercises of the Six Trigonometrical Ratios. Miscellaneous Revision Examples. Solution of Triangles. Miscellaneous Problems. Areas of Triangles, etc. Circular Measure. The Sphere. Trigonometrical Ratios of Angles Greater than 180°. Directed Lines. Compound Angles. Graphs of Periodic Functions. Appendix I. Traverse Table. Appendix II: Haversines. Miscellaneous Examples. Answers to Examples. Index.
Integration by Trigonometric and Imaginary Substitution. Charles O. Gunther, with an Introduction by J. Burkett Webb, C.E. Demy 8vo. 5/- net.
Quaternions, as the Result of Algebraic Operations. Arthur Latham Baker, Ph.D. Extra Crown 8vo. 6/- net.
The Calculus and its Applications. A Practical Treatise for Beginners, especially Engineering Students. With over 400 examples, many of them fully worked out. Robert Gordon Blaine, M.E., A.M.Inst.C.E., formerly Lecturer at the City Guilds’ Technical College. Crown 8vo. 5/- net.
An Elementary Treatise on the Calculus. Franklin, MacNutt and Charles. 16/6 net.
Elementary Statics. Franklin and MacNutt. 4/- net.
Mathematics for the Practical Man. A short work explaining all the elements of Algebra, Geometry, Trigonometry, Logarithms, Co-ordinate Geometry, and Calculus. George Howe, M.E. Crown 8vo. 7/- net.
The Practical Mechanic’s Handbook. F. E. Smith. 8/- net.
Contents.—Arithmetic. Arithmetical Signs and Characters and Explanation of Solving Formula. Mensuration. How the Dimensions, Measurements, and Weights of Different Shaped Vessels are Found. The Primary or Simple Machines. Strength of Materials and Questions Relating to Stress.