The Aeronautical Journal: Volume 32 -

Elements of Aviation. Virginius Evans Clark. (Ronald Press Company, 1928. $3.00.)
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28 July 2016, p. 910
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Ground Transport for an Air Organisation
R. E. H. Allen
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28 July 2016, pp. 596-623
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Probably few realise that a self–contained organisation for maintaining an air fleet would need many more different types of ground vehicles than aircraft. This is true in the case of the Royal Air Force even if all vehicles of a purely military nature are excluded. It is highly probable that a civilian air organisation of similar magnitude would have fewer types of aircraft, but if it were to be self–contained and operate in different parts of the globe, it could not do with many less types of ground vehicles than the R.A.F. finds necessary.
Obviously this depends on the interpretation of the term “self–contained.” Most of the small aerial transport companies have their own ground transport organisations, but they are far from being self–contained in the sense in which the author wishes to use the term to–night. We would all like to see a vast civilian air organisation operating in and between all the different units which comprise the British Empire. Nothing would do more to knit us and the Dominions and Colonies into one impregnable whole.

Modern Aircraft. Major Victor W. Pagé. N.W. Henley Publishing Co., New York. $5.00 net.
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28 July 2016, p. 168
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Society of Model Aeronautical Engineers: The Wakefield Cup for International Competition
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28 July 2016, pp. 415-416
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Aerodynamics of a Spinning Sphere
John W. Maccoll
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28 July 2016, pp. 777-798
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The full equations of motion for the flow of a viscous fluid have proved too complicated for any general solution to be obtained. It is to be doubted if, in. the near future, the problem of fluid motion will be solved in a general manner, although solutions for a few special cases may be found. In view of this it is of some value to investigate experimentally certain cases which are likely to prove of mathematical interest at a later date; this paper deals with such a problem. By means of the results obtained experimentally the mathematical analysis may be guided along the right lines and a satisfactory analytical solutioa of the problem be obtained.
The instrument used in exploring the fluid motion has a special interest of its own as it may prove of use in further aerodynamical investigations where the flow is of three–dimensional character. The development of this instrument, and its performance when tested, are described in Part I.
The experiments for the measurement of the forces on the spinning sphere are described in Part II.

The Aeronautical Journal