OUTSTANDING WORK AND WORKERS 101 



have had but one or two injections do not return, especi- 

 ally if they felt any unpleasant sensations after the first 

 ones. The Brazilians consequently set to work on a new 

 method of prevention which would appeal to the popu- 

 lace. They now are experimenting on a method by which 

 the patient takes capsules containing the preventive sub- 

 stance internally. Thus far, the results seem to warrant 

 the belief that this method will become widely used in 

 the future. 



Malaria, also, is ever present in the tropics and the 

 semitropics. We are accustomed to think only of the 

 Anopheles mosquito as carrying the disease, but it is in- 

 teresting to know that the men working under the auspices 

 of the Rockefeller Institute in Brazil and in the Argentine, 

 have found several other species which carry the disease. 

 They have thus added much to our supposed knowledge 

 of what we had considered a more or less closed chapter 

 in medicine. 



Other diseases requiring immediate study on account 

 of their prevalence are tropical splenomegaly, chronic 

 ulcerative processes of the skin, leprosy, and syphilis. 

 Hookworm is quite common as is also beriberi, dysentery, 

 and smallpox. 



Buenos Aires (Argentina) has a great Biological Insti- 

 tute which is a part of the National Health Department. 

 Here, as in the Oswaldo Cruz Institute, the preventive as 

 well as curative work of disease is undertaken. An idea 

 of the quantity of work performed, and the rapid growth 



