Of the works of others, I have borrowed ideas from the following:—

“Improvements in the Efficiency of Roadless Vehicles.” A paper read before the members of The Institution of Automobile Engineers, by Colonel P. H. Johnson, C.B.E., D.S.O., December, 1921.

“Multi-Wheel and Track Motor.” A paper read before the members of the above Institution by Major T. G. Tulloch, March, 1923.

“The Progress of Mechanical Engineering in the Military Service.” A lecture delivered before the members of The Institution of Mechanical Engineers, by Major G. le Q. Martel, D.S.O., M.C., January, 1924.

“Transport in Tropical Africa.” A paper read before the members of The Royal Society of Arts, by Mr. R. H. Brackenbury, February, 1925.

“The Roadless Transport Problem.” A paper read before the members of The British Association, by Colonel P. H. Johnson, C.B.E., D.S.O., August, 1925.

J.F.C.F.

Staff College, Camberley.

November, 1925.

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