72 l>LANt DISEASE 



One farmer told me he injected hypoder- 

 mically half a pint of virulent blood into an 

 animal without the least effect, and I was 

 pointed out two brothers one of whom had 

 had malarial fever twelve times, and the other 

 brother not once, although both brothers were 

 living in Rhodesia under identically the same 

 conditions. 



Mr. Hugh Clifford, in MA. P. of December 

 22, 1900, says 



" The miasma which rose from the inky 

 waters by night racked my fellows with fever, 

 and more than once I have had to cook rice 

 for the whole crew while the boat remained 

 anchored to the bank, because no one of them 

 was well enough to undertake that or any 

 other duty. Yet I passed unscathed, and then 

 and afterwards during the whole of my service 

 in the Malay Peninsula, I never came in for 

 the ' touch of fever ' with which almost every 

 white man in the East is destined to make 

 acquaintance." 



For years I have been advocating the analy- 

 sis of immune and non-immune blood in 



