The Theory and Practice of Model Aeroplaning Part 46

=Tables of Parabolic Curves= for the use of Railway Engineers and others. By G.T. ALLEN. Fcap. 16mo

4 0

=Barlow's Tables of Squares=, Cubes, Square Roots, Cube Roots and Reciprocals. Crown 8vo

6 0

=Tables of Squares.= By E.E. BUCHANAN. Ninth edition, 12mo

_net_ 4 6

=Land Area Tables.= By W. CODD. Square 16mo, on a sheet mounted on linen and bound in cloth

3 6

=Tables for Setting out Curves= from 101 to 5000 feet radius.

By H.A. CUTLER and F.J. EDGE. Royal 32mo

_net_ 2 6

=Transition Curves.= By W.G. FOX. 18mo, boards. (_New York_)

_net_ 2 0

=Tables of some of the Princ.i.p.al Speeds= occurring in Mechanical Engineering, expressed in Metres per second. By P.

KEERAYEFF. 18mo, sewed

0 6

=Calculating Scale.= A Subst.i.tute for the Slide Rule. By W.

KNOWLES. Crown 8vo, leather

_net_ 1 0

=Planimeter Areas.= Multipliers for various scales. By H.B.

MOLESWORTH. Folding sheet in cloth case.

_net_ 1 0

=Tables of Seamless Copper Tubes.= By I. O'TOOLE. 69 pp. oblong fcap. 8vo. (_1908_)

_net_ 3 6

=Rownson's Iron Merchants' Tables= and Memoranda, Weights and Measures. 86 pp. 32mo, leather

3 6

=Spons' Tables and Memoranda for Engineers.= By J.T. HURST, C.E. Twelfth edition, 278 pp. 64mo, roan, gilt edges. (_1907_)

_net_ 1 0

Ditto ditto in celluloid case

_net_ 1 6

=Optical Tables and Data=, for the use of Opticians. By Prof.

S.P. THOMPSON. Second edition, 130 pp. oblong 8vo. (_1907_)

_net_ 6 0

=Traverse Table=, showing Lat.i.tudes and Departure for each Quarter degree of the Quadrant, and for distances from 1 to 100, etc.; 18mo, boards.

_net_ 2 0

=Fifty-four Hours' Wages Calculator.= By H.N. WHITELAW. Second edition, 8vo.

_net_ 2 6

=Wheel Gearing.= Tables of Pitch Line Diameters, etc. By A.

WILDGOOSE and A.J. ORR. 175 pp. fcap. 32mo. (_1903_)

_net_ 2 0

MISCELLANEOUS.

=Time Chart.= The time of day at any place in the World at a glance. By Dr. F.J.B. CORDEIRO. On card.

_net_ 1 0

=The Atmosphere=: Its Characteristics and Dynamics. By F.J.B.

CORDEIRO. With 35 illus. 129 pp. medium 8vo. (_New York, 1910_)

_net_ 10 6

=Model Steam Engine Design.= By R.M. DE VIGNIER. 34 illus. 94 pp. crown 8vo, limp. (_New York, 1907_)

_net_ 1 6

=Popular Engineering.= By F. DYE. 704 illus. 477 pp. crown 4to.

(_1895_)

_net_ 5 0

=The Phonograph=, and how to construct it. By W. GILLETT. 6 folding plates, 87 pp. crown 8vo. (_1892_)

5 0