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THE POPULAR SCIENCE MONTHLY
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/26/PSM_V87_D080_D_Marchoux.png/420px-PSM_V87_D080_D_Marchoux.png)
Professor D. Marchoux
Professor D. Marchoux, microbiological laboratory, Pasteur Institute, Paris (section of tropical bacteriology); head of the French Commission to Brazil, which carried on monumental studies concerning the yellow-fever mosquito in Rio Janeiro, making many important discoveries.