EXPEDITIONS TO THE TROPICS 9 



all over the world were attracted both to Liverpool 

 and to London for the purpose of study and research. 



In the Appendix will be seen the number of expedi- 

 tions dispatched under the auspices of the Colonial 

 Office, the Royal Society, and the London and Liver- 

 pool Schools respectively. Of course these investiga- 

 tions into tropical diseases could not be carried out 

 without very considerable risk. Indeed several of the 

 investigators have sacrificed their lives in this endeavour 

 to advance the cause of medicine and humanity. The 

 Liverpool School of Tropical Medicine has lost two 

 brilliant investigators, Dr. Walter JMyers, who died of 

 yellow fever whilst investigating that disease at Para, 

 and Dr. Everett Dutton, who died of relapsing fever in 

 Central Africa whilst investigating sleeping sickness. 

 The London School lost the son of Sir Patrick INIanson 

 — a young medical man of great promise who died 

 through accident whilst on an expedition. He had 

 previously submitted himself to be inoculated by in- 

 fected malaria mosquitos and had contracted the disease, 

 thus proving in his own person conclusively what Ross 

 had previously proved in birds, that the infected 

 Anopheles was the carrier of the parasite of malaria. 



JNIr. Chamberlain did not rest satisfied with seeins" 

 the foundation of these schools, for in a letter to Lord 

 Lister he states : "I am not satisfied to rest at this 

 point, and wish to invite the co-operation of the Royal 

 Society in taking further steps." 



He went on to suggest that a thorough investiga- 

 tion should be undertaken by scientific experts 

 pn the spot, into " the origin, the transmission, anci 



