Lubrication of Aircraft Engines: Another View on the Qualities of Mineral Oils with Suggestions for a Further Series of Tests

NO one interested in the question of lubrication can fail to appreciate the contribution of Messrs. Thornycroft and Barton to this subject. With the validity of most of the experiment and with the conclusions drawn from it, we can all agree, but a wider and more impartial view of the whole subject makes one hesitate to accept, at any rate in their entirety, the conclusions drawn from one or two points.