PASTEUR'S WORK 3 



later by HafFkine in India, lloux and a group of 

 colleagues investigated Cholera in Egypt, and in the 

 present successful movement in the field of animal 

 Parasitology and Epidemiology we can clearly see 

 the direct continuation and amplification of the like 

 comprehensive method of treatment, the same de- 

 termination to extend the field of medical research 

 and to give the benefits of these researches to less 

 favoured peoples, — just as much to the coloured man 

 as to the white, whether in temperate or tropical zones, 

 and thereby to extend the benefits of civilisation and 

 commercial prosperity. 



Just as Louis Pasteur and his disciples, Lord Lister 

 and Koch, gave a new insight into the cause and means 

 of prevention of the infectious diseases, and freed the 

 world in consequence of many of its most devastating 

 scourges, so tropical medicine, in carrying us still further 

 afield, has shown us how to combat other and vastly 

 more devastating classes of disease, such as INIalaria, 

 Yellow Fever, Plague, jNIalta Fever, Sleeping Sickness, 

 and Tropical Auctmia. In these diseases it is now only 

 a question of efficient administration and organisation in 

 order to bring about their total abolition. The result 

 is a triumph of the advancement of medical knowledge, 

 and it is not too much to say that the twentieth 

 century will be known in the annals of medicine by 

 the immense progress which medical science has made 

 into the causes and prevention of tropical diseases, 

 discoveries which show clearly the role of insect life 

 in the transmission of disease, and, in consequence, the 

 most effective way of stopping disease. 



