"Mr. Dowling's tables are well put together as a ready-reckoner for the conversion of one system into the other." —Athenæum.

METROLOGY, MODERN. A Manual of the Metrical Units and Systems of the present Century. With an Appendix containing a proposed English System. By Lowis d'A. Jackson, A.M.Inst.C.E., Author of "Aid to Survey Practice," etc. Large crown 8vo, cloth 12/6

"We recommend the work to all interested in the practical reform of our weights and measures." —Nature.

MOTOR CAR, THE. A Practical Manual for the use of Students and Motor Car Owners, with notes on the Internal Combustion Engine and its fuel. By Robert W. A. Brewer, A.M.Inst.C.E., M.I.M.E., M.I.A.E. 250 pages. With numerous illustrations. Demy 8vo, cloth Net 5/0

MOTOR CAR CATECHISM. Containing about 320 Questions and Answers Explaining the Construction and Working of a Modern Motor Car. For the Use of Owners, Drivers, and Students. By John Henry Knight. Second Edition, revised and enlarged, with an additional chapter on Motor Cycles. Crown 8vo, with Illustrations Net 1/6

The Petrol Engine—Transmission and the Chassis—Tyres—Duties of a Car Driver—Motor Cycles—Laws and Regulations.

MOTOR CARS FOR COMMON ROADS. By A. J. Wallis-Tayler, A.M.Inst.C.E. 212 pp., with 76 Illustrations. Crown 8vo. 4/6

MOTOR VEHICLES FOR BUSINESS PURPOSES. A Practical Handbook for those interested in the Transport of Passengers and Goods. By A. J. Wallis-Tayler, A.M.Inst.C.E. With 134 Illustrations. Demy 8vo, cloth Net 9/0

Resistance to Traction on Common Roads — Power Required for Motor Vehicles — Light Passenger Vehicles — Heavy Passenger Vehicles — Light Goods Vans — Heavy Freight Vehicles — Self-Propelled Vehicles for Municipal Purposes — Miscellaneous Types of Motor Vehicles — Cost of Running and Maintenance.

OILS AND ALLIED SUBSTANCES. AN ANALYSIS. By A. C. Wright, M.A.Oxon., B.Sc.Lond., formerly Assistant Lecturer in Chemistry at the Yorkshire College, Leeds, and Lecturer in Chemistry at the Hull Technical School. Demy 8vo, cloth Net 9/0