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THE POPULAR SCIENCE MONTHLY 



Professor Angelo Celli 



Professor Dr. Angelo Celli, director of the institute of hygiene, Uni- 

 versity of Eome, Italy. He was, up to the time of his very recent 

 death, one of the foremost living workers in hygiene. His investiga- 

 tions and those of his colleagues and students were almost simultaneous 

 with those of Eonald Ross in India, and largely through his personal 

 instrumentality malaria has been enormously reduced in Italy. The 

 Eoman Campagna has once more been made habitable and the health 

 of the peasants has very greatly improved. 



