percentages,  yet  one  feature  stands  out  quite  clearly,  namely,  tliat 
the  percentage  of  dissolved  haemoglobin  in  the  blood  plasma  appears 
to  be  much  lower  than  in  experimentally  induced  haemoglobinaemia, 
none  of  the  specimens  of  plasma  obtained  giving  a  higher  |jercentage 
than  0’95.  On  the  other  hand  the  percentages  of  haemoglobin  in  the 
•/.of 
Kb- 
,7-r  Wu/ne 
o 
fio.  ly.  lilackwater  fever,  Case  i6.  Percentage  of  dissolved 
haemoglobin  in  blood  plasma  and  urine.  For  further  details  of 
urine,  see  [).  257. 
urine,  lliough  not  quite  so  high  as  those  observed  under  similar 
conditions  in  ralibits,  are  much  more  nearly  comparable  with  the 
latter,  the  highest  3't  per  cent.  (Ob.servation  36,  'I'able  34).  That 
the  degree  of  haemoglobinaemia  observed  in  blaekwatcr  fever  in  the 
last  thirteen  exiicriments  in  Table  34  is  not  incompatible  with  the 
considerably  higher  percentages  of  haemoglobin  met  with  in  the  urine 
-hof 
u 
I'lG.  20.  Jilackwater  hever,  (Ja.se  17.  Percentage  of  dis.solved  haemo¬ 
globin  in  blood  plasma  and  urine.  For  funher  details  of  urine, 
.see  p.  241. 
in  these  case.s,  is  shown  by  the  experimental  work  in  rabbits,  in 
jiarticular  by  Ijxperiments  7  to  (j,  Fable  /,(>,  so  that  there  is  nothing 
in  these  thirteen  results  (Observations  G  to  3(4,  Table  34)  to  negative 
the  su|Dposition  that  the  haemoglobinuria.  in  these  cases  is  dependent 
upon  accompanying  haemoglobinaemia.  To  render  a  comparison 
with  the  experimental  results  easier  the  scries  of  diagrams.  Figs.  lO 
