142 PASTEUR AND AFTER PASTEUR 



erected near Ostia, on water-logged land satur- 

 ated with the fever. In this hut Dr. Low, 

 Dr. Sambon, and others, lived, without taking a 

 grain of quinine : they merely kept off the mos- 

 quito with wire screens and mosquito-curtains. 

 Not one of them had any touch of the fever, 

 though it was all round them. 



2. Mosquitoes, after biting a malaria-patient in 

 Rome, were forwarded, by the British Embassy, 

 to the London School of Tropical Medicine : and 

 Dr. Manson and Mr. Warren let themselves be 

 freely bitten. In due time, they had malarial 

 fever ; and the plasmodium was found in their 

 blood. 



The experiment at Ostia coincides, in time and 

 in plan, with the work done at Camp Lazear on 

 yellow fever. Finlay had proved, so far back as 

 1881, that yellow fever may be conveyed, by the 

 mosquito, from man to man. In 1900, the 

 Government of the United States sent a Commis- 

 sion to study yellow fever in Havana. The Com- 

 missioners (Walter Reed, Carroll, Lazear, and 

 Agramonte) made use of an Army Camp, strictly 

 isolated. They erected a hut of two compartments, 

 separated by a fine-meshed wire screen. In the 

 one compartment were mosquitoes, infected from 

 a case of yellow fever : their infectiveness had been 

 proved by a voluntary act of self-experiment. In 

 the other compartment men slept, in contact with 

 clothing, sheets, linen soiled with blood or vomit 



