’-3 
l)eing  recognisable.  On  cutting  sections  of  the  first  kidney  (Expen 
inent  7,  Table  3s).  the  only  change  observable  was  the  occasional 
presence,  in  some  of  the  renal  tubules,  of  granular  material  having 
the  aspect  of  the  casts  already  described  in  the  urine  (Figs.  21-24). 
This  appeared  to  be  scattered  here  and  there  in  all  parts  of  the 
uriniferous  and  straight  tubules,  but  was  absent  from  the  Malpighian 
capsules.  The  granules  varied  in  size  from  2/1  to  less  than  ; 
r - - - - — 1 
Ojii  JO 
Kig.  4y.  Section  of  medulla  of  kidney  during  e.\periniental  haemoglobin- 
uria.  Rabbit  7,  Table  35.  In  longitudinal  section  a  collecting  tubule 
is  shown,  partly  occupied  by  a  cast  consisting  of  semi-opaque 
flocculent  material  containing  here  and  there  darkly  stained  granules 
o-5yU  to  i/j.  in  diameter.  The  granules  are  mostly  discrete;  in  some 
places  they  are  in  contact,  but  they  do  not  appear  to  have  undergone 
fusion.  The  renal  epithelium  is  healthy  in  aspect.  Hardened  in 
alcohol.  Stained  with  iron  alum  haematoxyliii.  x  1400. 
