4 86 
THOMPSON YATES LABORATORIES REPORT 
cases which came into the fever hospital were few and far between, and only two 
further autopsies were obtainable. The difficulty of obtaining material, which had 
been our chief obstacle all through, owing to the absence of any system of control or 
notification and isolation, now became so great that it was not thought expedient to 
continue. 
Having ascertained that there was no use in proceeding to Havana, it was 
judged best to return home; but I must here express my thanks to Surgeon-General 
Sternberg and Major Reed for their kind offices. I have also to thank the Sanitary 
Officers in Jamaica and British Guiana for kindly and courteously replying to my 
enquiries. Mr. Theobald has kindly identified the mosquitoes collected. 
