Yet, notwithstanding the fact that the two volumes must of necessity be complementary, an endeavour has been made throughout the work to render it complete in itself, although needless repetition has been avoided. It is anticipated, however, that before students take up the study of design they will have become well acquainted with the constructions commonly employed. The Author has included a few of the illustrations which appeared in the first volume. The subject-matter of this volume has been written from the notes used by the Author in his lecture to students on Motor Car Design, and is intended for the use of engineers, designers, draughtsmen, students and others whose work entails a knowledge of design. The treatment of the subject is from first principles, for two reasons: firstly, because it enables a student to grasp the essentials and the mode of application with less difficulty, and secondly, because empirical formula, always dangerous, are especially so in automobile design, where the conditions under which they are used may vary so greatly from those under which they have originated. Many worked examples have been given, which should be read carefully by the reader. The Author must again express his indebtedness to his friend and colleague Mr. T. Wadhams, Wh. Ex., who has kindly checked many of the calculations and read through the proofs, and to the Institution of Civil Engineers, and the various firms who have loaned him blocks for a number of the illustrations. His best thanks are also due to the Councils of the Institution of Civil Engineers and the American Society of Automobile Engineers; to the Engineering Standards Committee; to the Editor of the Practical Engineer-s Pocket Book, and to Messrs. Longmans, Green & Co. and Prof. A. Morley, B.Sc., for permission to use matter from their publications and referred to in the text, and to Mr. H. E. Wimperis, M.A., M.Inst.C.E., A.M.I.E.E., for information supplied. It is hardly to be expected that the Author has been entirely successful in avoiding mistakes in the calculations, and he would therefore be glad to have any corrections brought to his notice. PUBLISHERS- NOTE Since this book was put in type the Author has joined the army and his military duties have prevented his devoting time to the correction of proofs for press. This work has been undertaken by an eminent engineer who is equally anxious with the publishers that, should any errors have been inadvertently overlooked, the Author should not receive the blame.

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