the five. Scullions could be found for the latter — not for the 1 Q1 

 former. 



Of the thirty-odd items that made up the tropical disease 

 section, Wherry covered seven. Reference will not be made 

 to those on Asiatic cholera, [45] Malta fever, [46] filarial 

 disease [43] and those due to one-celled organisms, [41, 42] 

 authoritative and critical as they were. He wrote the opening 

 chapter for the entire set on The role of the medical man in the 

 future control of the tropics [40]. This was the beginning 

 sentence : 



Encircling the earth, between 30° N and 30° S of the equator 

 are tropical and subtropical regions — the most beautiful, the 

 most fertile, the most richly endowed portions of the globe. 

 Time and again they have been invaded by northern races in 

 search of wealth. Stricken by strange pestilences of mysterious 

 origin, the invaders disappeared. Gradually the rumor spread 

 and the belief became ingrained that there lay "the white 

 man's grave." 



To get at once to the heart of the problem, he asked: 



Will modern science operating through the medical man be 

 able to neutralize the forces which act deleteriously upon the 

 white man in the tropics? . . . The problems facing white 

 settlement have been greatly modified by recent advances in 

 our knowledge of tropical diseases, but these researches tend 

 rather to promote . . . the efficiency and supply of black 

 labor than to guarantee successful and permanent settlement 

 by whites. 



Allowing that hygiene could protect the white man against 

 the diseases peculiar to the tropics, what about light, heat, 

 and moisture? To which Wherry answered: "He must acquire 

 more pigment, go unclothed, readjust his thermoregulatory 

 mechanism — nervous and cutaneous." It was not an end easy 

 of accomplishment, yet a situation that had to be met, for, 

 said Wherry: 



The fact remains that the tropics are largely in his possession, 

 and that he will have to face the problem of developing their 

 enormous natural wealth as a source of supply for an over- 

 crowded world — not by the old and reprehensible system of 



