War on the Mosquito
Dr. Gorgas carried on the work of the investigation and development of the mosquito theory after the death of Dr. Reed, and became a recognized world-wide authority on the science of tropical diseases and sanitation, when he was chosen as the officer to whom the sanitization of the Zone should be entrusted. He was given ample funds by the American Government and furnished with a force of men numbering more than 2000, his theory being that by the destruction of the breeding places of mosquitoes he could finally eliminate the mosquitoes themselves.
In carrying out his plan the vegetation on either side of the canal for half a mile was cut down and burned, the dead trees destroyed, the low marshy places drained where possible; and where it was impossible to successfully drain the ground and water pools they were covered with a petroleum mixture. In fact, petroleum was found to be so effective that it came to be the favorite means of destroying the mosquitoes, and one approaching Colon today, if the wind is in the right quarter, may catch the odor of that ingredient one hundred miles at sea.
It was found after investigation by Dr. Gorgas that the mosquito, called the stegomyia, was peculiarly partial to the yellow fever victim, and that after biting a yellow fever patient and becoming inoculated with the poison, the stegomyia became very active in its distribution to other subjects. A mosquito called the anopheles, by some peculiar freak of nature, had a like attraction for the victims of malarial diseases.
And so, between the two kinds of mosquitoes there seemed to be a rivalry as to which could do the most damage. But fortunately neither one of these pestiferous insects could fly over a quarter of a mile, and so the theory of Dr. Gorgas was that by destroying their breeding places and eliminating them from the Canal Zone, he might preserve the health of the workers.
Colon was overhauled by repaving the streets after first saturating the ground with petroleum, bringing in fresh water and constructing sewers. In fact, all the measures that were necessary to establish healthful conditions were used.
The same course of treatment was given the City of Panama, much to the disgust of many of the Panamanian residents, who had been using water from wells and cisterns that had been dug two centuries before, when Panama was founded.
A splendid system of hospitals was built up by rehabilitation of the hospital system left by the French company and the addition of others. Thousands of cabins were built for the common laborers, the so-called “silver men,” and better cottages for white men who might take their families with them to the Zone while engaged in labor there. Dormitories for single white men were built at every construction point. Restaurants were established at which a meal of four courses was furnished the superior class of white employees at 35 cents. Provision was made for the issuance of cooked rations at a price of 10 cents per ration to the “silver men,” who are nearly all negroes, it being the policy of the commission to protect the life and health of every employee of the Zone, so that the health of the individual would become a guarantee of the safety of the whole body of working men.