Mr. E. T. Brown, Whose work is well known to
readers of the Spectator has published a most valuable Book of the Light Car (Chapman and Hall, 7s. 6d.). The principle of the internal combustion engine, which every educated person ought to understand .(and how many do ?) is explained with 'admirable lucidity 'by- Mr.-Brown, as alsn_are .the ".mysteries" of long and short-stroke engines, gear-boxes, cooling systems and differential. An excellent. and - simple Trouble Chart is given, which, if followed, will end that -desperate and futile fussing which the novice so often falls into when engine trouble develops ; this chart will enable him to diagnose defects in a fruitful way. We have read many books on motoring, but none that is at once so easily intelligible, so expert, so practical and so readable.
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