This book is not a reflection of the fancies of the public on the subject of their food, or of the methods of the individual who believes in an infallible system for the dieting of his patients. Until our knowledge of physiology is more perfect than at present the scientific basis of dietetics must be an unstable one. Nevertheless patients must be dieted, and the physician must be guided by the teaching of history, by experimental physiology, and by clinical experience in the proper regulation of their diet. All that has been attempted in this book is to set down the principles and practice of men who have had special experience of the subjects on which they write.

Each contributor is responsible for the whole of his own section or sections. It may have followed that a certain clashing of views is to be found, but this may be taken as reflecting the divergence of opinion which exists in the profession on the subject of diet. Contributors were asked to give their own views and experiences, rather than to make a collection of all the views of different authorities. Although the book is thereby rendered more dogmatic in tone, it may prove of more value to the practitioner, and serve as a guide in his work rather than be a mere cyclopaedia of facts and opinions. At the same time the views of the leading authorities have been included and critically considered. My best thanks are due to all the contributors for the manner in which they have carried out the plan of the book, and for the time and labour they have so ungrudgingly given, often at great personal inconvenience. The readiness with which they responded to my request for assistance has rendered my own task an easy and pleasant one.

The publishers have aided me in every way and have produced a book which is eminently readable. Not even the most ardent student of these pages will be likely to injure his eyesight by their perusal. In the correction of the proofs I have received much assistance from my brother, Dr. C. D. Sutherland.

29b, Wimpole Street,

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List Of Authors

NOEL Dean Bardswell, M.D., M.R.C.P., F.R.S.Ed., Medical Superintendent of the King Edward VII Sanatorium.

Francis D. Boyd, C.M.G., M.D., F.R.C.P.Ed., Assistant Physician, Royal Infirmary, Edinburgh; Physician to the Deaconess Hospital, Edinburgh.

J. Rose Bradford, F.R.S., M.D., D.Sc, F.R.C.P., Professor of Medicine, University College Hospital Medical School; Physician to University College Hospital.

Sir Lauder Brunton, Bt., LL.D., F.R.S., M.D., F.R.C.P., Consulting Physician to St. Bartholomew's Hospital.

Harry Campbell, M.D., F.R.C.P., Physician to the West End Hospital for Nervous Disease; President of the Society for the Study of Inebriety.

Edmund Cautley, M.D., F.R.C.P., Physician to the Metropolitan Hospital, and the Belgrave Hospital for Children.

John Ellis Chapman, M.R.C.S., L.R.C.P., Medical Superintendent, Coppins Green Sanatorium.

John M. Cowan, M.D., D.Sc, Professor of Medicine, Anderson's College Medical School; Physician, Royal Infirmary, Glasgow.

Charles Wilberforce Daniels, M.B., M.R.C.S., Director of the London School of Tropical Medicine; Lecturer on Tropical Diseases at the London Hospital.

T. Colcott Fox, M.B., F.R.C.P., Physician for Diseases of the Skin, Westminster Hospital; Dermatologist to the Metropolitan Asylums Board Schools.

Wilfred J. Hadley, M.D., F.R.C.P., Physician and Lecturer on Medicine, the London Hospital; Physician to the City of London Hospital for Diseases of the Chest.

Herbert P. Hawkins, M.D., F.R.C.P., Physician and Lecturer on Medicine, St. Thomas's Hospital.

Claude B. Ker, M.D., F.R.C.P.Ed., Medical Superintendent, City Hospital, Edinburgh; Lecturer on Infectious Diseases in the University of Edinburgh.

Arthur P. Luff, M.D., F.R.C.P., Physician to St. Mary's Hospital.

Sib Patrick Manson, K.C.M.G., F.R.S., M.D., F.R.C.P., Physician to the Seamen's Hospital Society; Medical Adviser to the Colonial Office.

Edmund Iven Spriggs, M.D., F.R.C.P., Senior Assistant Physician and Lecturer on Pharmacology, St. George's Hospital; Physician to the Victoria Hospital for Children.

G. A. Sutherland, M.D., F.R.C.P., Senior Physician to the Hampstead and North-West London Hospital; Physician to the Paddington Green Children's Hospital.

James Taylor, M.D., F.R.C.P., Physician to the National Hospital for Paralysis and Epilepsy; Physician to the Royal London Ophthalmic Hospital.

W. Hale White, M.D., F.R.C.P., Senior Physician and Lecturer on Medicine, Guy's Hospital.