ACKNOWLEDGEMENTS 



Society of lAliiiliurgli, ns wvll ns the (luoUtion in 

 See. 48. rj on page 182 of (iiis vohuno, arc made 

 by pormiiision of the Council of that Society. 



Hrpriut-s of portions of papers by William 

 I'roiuic and CJ. II. Bottomiey, originally pub- 

 lished in the 1870 1S71 and l'.»:{.") Proceeding.s. 

 respectively, of the Institution of Civil Engineers 

 in Cin^at Britain and included in Sec. 37.4 of 

 Volume I and Sec. 71.7 of \'olume II, arc repro- 

 duced by courtesy of the Institution. 



The adaptation in Fig. 32. D on page 450 of 

 Volume I, and the fiuotation on page 557 of 

 that volume, arc made by permission of E. and 

 F. N. Spoil, Limited, publishers of the book 

 "Marine Propellers," by Sydney W. Barnaby, 

 4th edition. I'JOO. 



The drawings of the magnetic lines of force in 

 Figs. LB and I.C of the Introduction to Volume I, 

 on page xxvi, are reproduced from the publication 

 "Mo<lem Engineering Practice," edition of 1902, 

 by permission of the American Technical Society 

 of Chicago. 



The quotation in Sec. 20. 1 1 , on page 299 of 

 Volume I, is from the Proceedings of the Cam- 

 bridge Philosophical Socictj'. 



The quotation from the Reports and Memo- 

 randa of the (British) Aeronautical Research 

 Committee, in Sec. 49.8 on page 195 of the 

 present volume, is reproduced by permission of 

 the Controller of Her Britannic Majesty's 

 Stationery Office. 



The c|uotation in Sec. 30.5, on page 127 <if 

 Volume I, is reprinted from "Elements of Yacht 

 Design," by Norman L. Skene. Copyright © 1927. 

 Renewal © 1955 by Quentin H. Skene. 



The publication rights to the book "Sail and 

 Power," by UlTa Fox, are held by Peter Davies, 

 Limited, of London. The quotation in Sec. 40.3, 

 on page 3 of this volume, is published with their 

 permis-sion. Rcjidei-s will be interested to know' 

 that this firm maintains a stock of the I'fTa Fox 

 books on jachting. 



The fouling-resLstance graphs of E. Y. Lewis, 

 adapted from the May 1948 i.ssuc of The Ixjg, 

 are embotlied in Figs. 45. K and 45. L of this 

 volume by permission of The LOG (now Marine 

 Engineering/ Ixig). 



(Quotations from the 1950 cnlition of "Theo- 

 retical Hydrodynamics" are by permission of The 

 Macmillan Company of New York, publishers of 

 the American edition, and of Macmillan and 

 Company, Limited, publishers of London, for the 

 British and other world markets. 



The quotations and adaptations from the 

 following books, copyrighted on the dates indi- 

 cated, are by permission of John Wiley and 

 Sons, Inc., of New Y'ork: 



Durand. W. F., "Resistance and Propulsion of 

 Ships," 1903 



Pcabody, C. IL, "Naval .Uchitecture," IU04 



Rou.se, IL, "Elementary Mechanics of Fluids," 

 194f. 



Vennaril,.!. K., "l-^icnicatary I'iuiei .Mechanics," 

 2Md edition, 1947 



Rouse, H., editor, "Engineering Hydraulics," 

 1950. 



The firm of Hutchinson and Company, Pub- 

 lishers, Limitefl, of 178-202 Great Portland Street, 

 London, W.l, England, in generously granting 

 permi.ssioii for the use of material from books 

 I)ul)li.shed by them, advises that the book on 

 iiiotorboats by Juan Baader of Buenos Aires (in 

 Spanish) is to be i.ssued by them in an English 

 edition in 1957. It is to be an improved and 

 enlarged version of "Cruceros y Lanchas Veloces," 

 published in 1951; the Enghsh title will be 

 "Cruisers and Speetlboats." 



Mr. Thomas D. Bowes, consulting naval archi- 

 tect and engineer of Philadelphia, made it possible 

 to embody the photograph of the fircboat in 

 action, reproduced as Fig. 7G.II on page 775 of 

 the text. 



