«5 
collected  by  means  of  a  cannula  tied  in  the  bladder,  the  portion  first 
secreted  containing  haemoglobin  would  be  diluted  with  the  normal 
urine  still  remaining  in  the  pelves  of  the  kidneys  and  ureters,  and 
also  with  the  very  small  amount  yet  remaining  in  the  bladder.  In 
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kb 
I'lG.  lo.  Blackwater  Fever,  Case  3.  Percentage  of  dissolved 
haemoglobin  in  blood  plasma  and  urine.  For  further  details  of 
urine,  see  p.  185. 
the  experiments  recorded  in  Figs.  7  to  9,  the  urine  in  the  glass  cannula 
continued  amber-coloured  for  two  to  five  minutes  after  intravenous 
injection  of  dissolved  haemoglobin ;  it  then  became  dark  red  in 
colour,  a  sharp  line  of  demarcation  appearing  in  the  cannula  between 
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u 
hxHlAA 
I’lG.  II.  Blackwater  Fever,  Case  ya.  Percentage  of  dissolved 
haemoglobin  in  blood  plasma  and  urine.  For  further  details  of 
urine,  see  p.  199. 
the  two  kinds  of  urine.  The  red  tint  of  the  urine  then  underwent  a 
slight  increase  in  depth  as  the  urine  continued  to  be  secreted.  To 
what  extent  this  was  due  to  the  first  portions  being  diluted  with  urine 
still  remaining  in  the  urinary  passages  is  not  clear,  though  from  the 
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hb  - 
I'lG.  12.  Blackwater  kever.  Case  8'.  Percentage  of  dissolved 
haemoglobin  in  blood  plasma  and  urine.  For  further  details  of 
urine,  see  p.  204. 
