_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._
_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._
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._
_Author of "The Forest," "The Mountains," "The Silent Places," "The Blazed Trail," etc._
In the year 1900, Major Walter Reed, a surgeon in the United States Army, demonstrated, by experiments conducted in Cuba, that a mosquito of a single species, Stegomyia fasciata, which has sucked the blood of a yellow-fever patient may transmit the disease by biting another person, but not until about twelve days have elapsed. He also proved, as described in Volume I, Part II, that the malady is not contagious. "With the exception of the discovery of anæsthesia," said Professor Welch, of Johns Hopkins University, "Dr. Reed's researches are the most valuable contributions to science ever made in this country." General Leonard Wood declared the discovery to be the "greatest medical work of modern times," which, in the words of President Roosevelt, "renders mankind his debtor." Major Reed died November 23, 1902.]
_Health Commissioner of New York City; Former President Medical Board, New York Foundling Hospital, etc.; Author of Medical and Climatological Works_
_Consulting Engineer for Sanitary Works; Author of "House Drainage," "Sanitary Engineering," "Household Wastes," etc._
_Medical Inspector, New York City Department of Health_
_Former Medical Sanitary Inspector, Department of Health, New York City; Author of "Tenement-House Inspection," "Handbook on Sanitation," etc._