5 PREFACE
both by Dr. Roy S. MacElwee, of Charleston, South
Carolina, U.S.A., published by the McGraw-Hill Book
Company Inc., of New York, and obtainable in this country
at the offices of the McGraw-Hill Publishing Co., Ltd.,
6 Bouverie Street, Fleet Street, E.C.; also to Wharf
Management, Stevedoring and Storage by MacElwee and
Taylor, published by D. Appleton and Company, New
York and London.
Finally, the author desires to express his grateful acknowledgments
 to several friends who have kindly supplied data
and made suggestions, and, in particular, for permission
to use the photographs and plans.
BROAD SANCTUARY CHAMBERS,
WESTMINSTER, S.W.1.
January, 1920.

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