Case  7. 
JiLACKWATKR  Fe\ER. 
M;ile,  thirty-lwo  years  of  age.  Clerk.  Ifurasian. 
Has  been  in  Nyasaland  for  six  years.  One  month  alter  coming 
into  the  country  had  an  attack  of  malaria  lasting  ten  days.  Nine 
months  later  had  blackwater  fever.  Suffered  from  malaise  for  about 
a  fortnight,  gradually  getting  wor.se.  Then  observed  that  his  urine 
was  of  a  reddish-black  colour,  resembling  stout.  Vomited  severely, 
and  had  general  aching  pains.  Comple.xion  became  sallow,  was  very 
weak.  At  end  of  three  days  urine  became  normal.  Patient  was  well 
again  at  end  of  ten  days.  Two  and  a  half  years  ago  had  dysentery. 
Six  months  ago  had  malaria,  his  temperature  at  the  time  reaching 
105°  F. 
1st  day  of  illnes.s.  Felt  ill,  and  went  to  bed  in  the  afternoon. 
2nd  day.  Did  not  feel  very  well  m  the  morning,  Imt  did  not  leave 
off  work.  At  four  o’clock  in  the  afternoon  had  an  attack  of  ague  and 
went  to  bed  again,  shivering  and  sweating  very  much.  Took  ten 
grains  of  ciuinine  in  five-grain  doses. 
X 
