Page:"N" Rays (Garcin).djvu/125

---

GEOMETRY AND EUCLID.

⁂ For other Works, see Longmans & Co.'s Catalogue of Educational and School Books.

ALLMAN.—GREEK GEOMETRY FROM THALES TO EUCLID.⁠By G. J. Allman.⁠8vo., 10s. 6d.

BARRELL.—ELEMENTARY GEOMETRY.⁠By Frank R. Barrell, M.A., B.Sc., Professor of Mathematics, University College, Bristol.

Section I.⁠Part I., being the subject-matter of Euclid, Book I.⁠Crown 8vo., 1s.

Section I.⁠Part II., containing the subject-matter of Euclid, Book III. 1-34, and Book IV. 4-9.⁠Crown 8vo., 1s.

Section I. complete.⁠Crown 8vo., 2s.

Section II., containing the remainder of Euclid, Books III. and IV., together with the subject-matter of Books II. and VI.⁠With explanation of Ratio and Proportion, Trigonometric Ratios and Measurement of Circles.⁠Crown 8vo., 1s. 6d.

Sections I. and II. in one volume.⁠Crown 8vo., 3s. 6d.

Section III., containing the subject-matter of Euclid, Book XI., together with a full treatment of volume and surface of the cylinder, cone, sphere, etc.⁠Crown 8vo., 1s. 6d.

Sections I., II. and III. complete in one volume.⁠Crown 8vo., 4s. 6d.

CASEY.—Works by John Casey, LL.D., F.R.S.

THE ELEMENTS OF EUCLID, BOOKS I.-VI. and Propositions, I.-XXI. of Book XI., and an Appendix of the Cylinder, Sphere, Cone, etc.⁠With Copious Annotations and numerous Exercises.⁠Fcp. 8vo., 4s. 6d.⁠Key to Exercises.⁠Fcp. 8vo., 6s.

A SEQUEL TO THE ELEMENTS OF EUCLID.⁠Part I.⁠Books I.-VI.⁠With numerous Examples.⁠Fcp. 8vo., 3s. 6d.

A TREATISE ON THE ANALYTICAL GEOMETRY OF THE POINT, LINE, CIRCLE AND CONIC SECTIONS.⁠Containing an Account of its most recent Extension.⁠Crown 8vo., 12s.

HAMILTON.—ELEMENTS OF QUATERNIONS.⁠By the late Sir William Rowan Hamilton, LL.D., M.R.I.A.⁠Edited by Charles Jasper Joly, M.A., Fellow of Trinity College, Dublin.⁠2 vols. 4to. 21s. net each.

LONGMANS' LIST OF APPARATUS FOR USE IN GEOMETRY, ETC.

1.⁠LONGMANS' ENGLISH AND METRIC RULER.⁠Marked on one edge in Inches, Eighths, Tenths and Five-fifths.⁠Marked on the other edge in Centimetres.⁠Price 1d. net.

2.⁠LOW'S IMPROVED SET SQUARES.⁠Designs A & B.⁠45° to 60°.

A 1 45° 4″ B 1 45° 4″ each 1/- net. A 2 45° 6″ or B 2 45° 6″ each„ 1/3 net.„ A 3 45° 6½″ B 3 45° 8½″ each„ 2/- net.„

A 1 60° 4″ B 1 60° 4" each 1/- net. A 2 60° 6″ or B 2 60° 6″ each„ 1/3 net.„ A 3 60° 8½″ B 3 60° 8½″ each„ 2/- net.„

3.⁠LOW'S IMPROVED PROTRACTORS (Celluloid).⁠Protractor No. 2. 3″ radius, marked in degrees, 6d. net.⁠Protractor No. 3. 4″ radius, marked in ½-degrees, 9d. net.

4.⁠LOW'S ADJUSTABLE PROTRACTOR SET SQUARE.⁠2s. 6d. net.

5.⁠LONGMANS' BLACKBOARD ENGLISH AND METRIC RULE.⁠One Metre; marked in decimetres, centimetres, inches, half-inches and quarter-inches.⁠2s. 6d.