"The Stegomyia mosquito was found to be beyond question the means of transmitting the {143} yellow fever germ. This mosquito, in order to become infected, must bite a person sick with the yellow fever during the first five days of the disease. It then requires approximately ten days for the germs so to develop that the mosquito can transmit the disease, and all non-immunes who are bitten by a mosquito of the class mentioned, infected as described, invariably develop a pronounced case of yellow fever in from three-and-one-half to five days from the time they are bitten. It was further demonstrated that infection from cases so produced could be again transmitted by the above described type of mosquito to another person who would, in turn, become infected with the fever. It was also proved that yellow fever could be transmitted by means of introduction into the circulation of blood serum even after filtering through porcelain filters, which latter experiment indicates that the organism is exceedingly small, so small, in fact, that it is probably beyond the power of any microscope at present in use. It was positively demonstrated that yellow fever could not be transmitted by clothing, letters, etc., and that, consequently all the old {144} methods of fumigation and disinfection were only useful so far as they served to destroy mosquitoes, their young and their eggs." [Footnote: General Wood's Report on the military government of Cuba.] That is the story of a work that has made Cuba a healthy land, that has freed the southern part of the United States forever from the dread disease, that has made the building of the Panama Canal a possibility and the Canal Zone healthier in death rate per thousand than New York City, that has finally rid the earth of yellow fever as vaccine rid it of smallpox and typhoid, and as the discoveries during the Great War have made it possible to check tetanus and typhus and bubonic plague. It was done--the work was done--by the doctors named and their assistants and the many men who took up the burden in other places and carried on. All honor to them! But the man who approved the idea, who took the risk and the responsibility and backed up those who worked-- the man who kept in touch with it day by day and {145} saw that it was carried through--was Leonard Wood. Simultaneously with these basic administrative activities many other lines of constructive state building were inaugurated, under the same administrative plan--the plan of the appointment of a specialist or a commission of specialists to draw up plans and report to the Governor-General who then decided and started the actual work of reorganization.