Special Contributors

Food Adulteration

S. Josephine Baker, M.D.

Medical Inspector, New York City Department of Health.

Pure Water Supply

William Paul Gerhard, C.E.

Consulting Engineer for Sanitary Works; Member of American Public Health Association; Member, American Society Mechanical Engineers; Corresponding Member of American Institute of Architects, etc.; Author of "House Drainage," etc.

Care of Food

Janet McKenzie Hill

Editor, Boston Cooking School Magazine.

Nerves and Outdoor Life

S. Weir Mitchell, M.D., LL.D.

LL.D. (Harvard, Edinburgh, Princeton); Former President, Philadelphia College of Physicians; Member, National Academy of Sciences, Association of American Physicians, etc.; Author of essays: "Injuries to Nerves," "Doctor and Patient," "Fat and Blood," etc.; of scientific works: "Researches Upon the Venom of the Rattlesnake," etc.; of novels: "Hugh Wynne," "Characteristics," "Constance Trescott," "The Adventures of François," etc.

Sanitation

George M. Price, M.D.

Former Medical Sanitary Inspector, Department of Health, New York City; Inspector, New York Sanitary Aid Society of the 10th Ward, 1885; Manager, Model Tenement-houses of the New York Tenement-house Building Co., 1888; Inspector, New York State Tenement-house Commission, 1895; Author of "Tenement-house Inspection," "Handbook on Sanitation," etc.

Indoor Exercise

Dudley Allen Sargent, M.D.

Director of Hemenway Gymnasium, Harvard University; Former President, American Physical Culture Society; Director, Normal School of Physical Training, Cambridge, Mass.; President, American Association for Promotion of Physical Education; Author of "Universal Test for Strength," "Health, Strength and Power," etc.

Long Life

Sir Henry Thompson, Bart., F.R.C.S., M.B. (Lond.)

Surgeon Extraordinary to His Majesty the King of the Belgians; Consulting Surgeon to University College Hospital, London; Emeritus Professor of Clinical Surgery to University College, London, etc.

Camp Comfort

Stewart Edward White

Author of "The Forest," "The Mountains," "The Silent Places," "The Blazed Trail," etc.