74 HOUSEHOLD INSECTS 



repeatedly demonstrated that this fever can be given to 

 cattle by putting ticks on them. Exactly similar facts 

 have been demonstrated in regard to human malaria and 

 mosquitoes. And these experiments constitute our last 

 and final proof of the relation between malaria and 

 mosquitoes. 



The region known as the Campagna near the city of 

 Rome, Italy, is a low, marshy, wet area, which is one of 

 the most malarious regions in Italy, if not in the world. 

 It is not at all a thickly settled region, because people 

 will not and cannot live there on account of chills and 

 fevers, especially in the autumn during the wet season. 

 Here, if anywhere, was a good place in which to test the 

 whole question of the relation of mosquitoes to malaria 

 in a practical and convincing manner. Here was the 

 water, the marsh, the bad air, the mosquitoes, and the 

 malaria. If people could live in the midst of the Cam- 

 pagna, breathe the bad air, get wet, and undergo all the 

 conditions of life there with one exception, namely, keep 

 free from mosquitoes and their bites, and yet escape 

 malaria, it would certainly convince the most skeptical. 

 Exactly this has been done. 



Two English physicians, Sambon and Low, in the sum- 

 mer of 1900 determined to satisfy themselves and the 

 world in a practical way of the part that the mosquito 

 plays in malaria. During the summer, they caused to be 

 built in the worst part of the Campagna a small, one- 

 story, five-room house, the windows and doors of which 

 were tightly screened with wire netting so that no mosqui- 

 toes could possibly enter. Here both physicians lived and 

 worked, for they had their instruments with them, during 

 the late summer and autumn while the rainv and most 



