Page:Popular Science Monthly Volume 87.djvu/173

Rh



Dr. Oswaldo Concalves Cruz, director of the Institute Oswaldo Cruz, Rio Janeiro, Brazil. The work of the Oswaldo Cruz Institute in regard to the carriage of disease by insects has been of the highest type. The men are trained in all bacteriological and morphological methods, and their work has placed the institute among the first in the world. Dr. Cruz is responsible for the early and complete elimination of yellow fever from Rio Janeiro and for its reduction throughout Brazil.