io8 Mosquitoes 



landing given a health certificate and kept under 

 medical supervision for twelve days. Then the vessel 

 is permitted to have free intercourse, and admits a 

 health inspector on board, who will accompany the 

 vessel to its last Brazilian port, and examine daily, 

 with care, all the passengers and the crew, and isolate 

 with netting any who show symptoms of fever. If 

 mosquitoes be present, their immediate destruction 

 is ordered at once. 1 



The New Orleans Epidemic of 1905. — The recent 

 epidemic in New Orleans might have been easily pre- 

 vented had the inhabitants listened a couple of years 

 ago to the warnings, and followed the advice, of Dr. 

 Kohnke. He was unfortunate enough to be ahead 

 of his time and to have to deal with a large number 

 of illiterate foreigners as well as with an unscientific 

 and somewhat careless better class. Dr. Kohnke 

 prophesied — and had the reward of a prophet. He 

 explained, he lectured, he tried to have the cisterns 

 screened, he did everything that he could ; some 

 laughed openly, some listened and did not understand, 

 others deliberately turned their backs. Most went on 

 carelessly, thinking that there were a great many more 

 vital questions than that of mosquitoes. Then they 

 woke up — after they had it. But, when they awak- 

 ened, they fought, and the result was as great a victory 

 as that won by any general or admiral of modern 

 times. 



It was a terrific contest, conducted under the most 

 adverse conditions. When it began there were hun- 



1 Otto and Neuman. 



