POINTS AND QUARTER-POINTS REDUCED TO DEGREES, ETC.

N.E. by N. N.W. by N. 3 0 33 45 0 3 0 S.E. by S. S.W. by S.

N.E. by E. N.W. by W. 5 0 56 15 0 5 0 S.E. by E. S. W. by W.

NOTE.-In Tables vi and VII allowance is made for refraction, but not

COMPLETE PRACTICAL COURSE.

I.

In One Vol. 8vo, Price 5s., and illustrated with Diagrams,
A Complete Treatise on Practical Geometry and Mensuration.

BY JAMES ELLIOT,

MATHEMATICAL TEACHER IN THE EDINBURGH INSTITUTION, AND FORMERLY TEACHER OF MATHEMATICS IN THE LIVERPOOL MECHANICS' INSTITUTION.

II.

In One Vol. 8vo., Price 6s.,

Key to the above Treatise.

III.

In 8vo, pp. 224, Price 5s., with Diagrams,

A Practical Treatise on the Nature and Use of Logarithms, and on Plane Trigonometry.

WORKS

COMPLETE TREATISE ON PRACTICAL GEOMETRY AND MENSURATION,
AND ITS KEY.

"I have been in the habit of recommending your Treatise to my students, and I consider it very useful, and well adapted to fulfil the objects it professes to embrace."-P. KELLAND, Esq., Professor of Mathematics in the University of Edinburgh.

"These books are the work of a man who is both an able practical mathematician and an experienced teacher. The Key is not a mere table of solutions, -it is interspersed with valuable critical remarks, illustrating the rationale of the various processes. The Treatise and Key together are a valuable addition to our school libraries."-Spectator.

"A genuine work, evincing great mathematical genius, sagaciously applied to the arts and pursuits of life. As a practical work, the Treatise, with its Key, possesses advantages over every other that has fallen under our observation."Britannia.

"He (the Author) has the appearance of method, thought, and reading. In the Key are found a number of critical observations on his predecessors, which may furnish the teacher, who really thinks, with occupation, and which entitle the volume to a name of more pretension than that of a Key."-Athenæum.

"These two volumes form a very valuable addition to the list of books adapted to the purpose of tuition. The second volume (the Key) is much more than what might be expected from its title; for, whilst solutions of the more difficult exercises are given, it contains also demonstrations of all those rules which require the aid of the Integral Calculus. The same investigations are rarely to be met with in a collected form, discussed at the same length, and with the same distinctness; and to the student who has mastered the expressions for the differentials of lines, areas, and volumes, and is acquainted with some of the ordinary processes of integration, there is here presented a collection of examples, which will be the more interesting that they are susceptible of practical application, and are not mere trials of analytic skill."-Scotsman.

PRACTICAL TREATISE ON LOGARITHMS AND ON PLANE TRIGONOMETRY, AND ITS KEY.

"The publication of this cheap, yet accurate, Compendium of Trigonometry and Logarithms, we deem a public benefit, and can safely recommend it to the attention of parents and teachers. We have the pleasure of knowing, that Mr Elliot's Treatise on Mensuration is already adopted in some of our best mathematical schools,-we doubt not but his Trigonometry and Logarithms will soon follow."-North British Mail.

"We believe the work will prove extensively useful in schools where Trigonometry forms a branch of study, and unhesitatingly give it our hearty recommendation."-Aberdeen Journal.

SUTHERLAND AND KNOX, EDINBURGH.
SIMPKIN, MARSHALL AND CO., LONDON.