From the time of the invasion of the tropics by the white race of the north the question of what happens to it when permanently established in the tropics has been studied and debated. It is still a controversial subject.
How can one study the race and its succeeding generations over a long period of time in regard to the effects of climate per se without being able to isolate the race from all social, economic and disease factors? Considerable evidence has accumulated from animal experimentation and from physiological investigations but the problem of colonization has not been completely solved.
Price (1) in his book White Settlers of the Tropics divides the white races into those of North European ancestry and those of South European ancestry. He is also careful to separate the sojourner from the permanent settler whose objective is colonization. One of his conclusions is as follows: “To the racial purist the future that lies before the white settler in most parts of the tropics is far from promising.”.
Director, Gorgas Memorial Laboratory, Panama, R. de P.