:i*i!' 
126 
they  were  brown  in  colour,  in  the  unstained  condition,  and  did  not 
apiicar  to  increase  in  size  as  the  pelvis  of  the  kidney  was  approached. 
They  stained  readily,  but  were  more  easily  decolourised  than  the 
larger  granules  seen  in  the  kidneys  in  Cases  /a  and  ii.  The  casts 
varied  in  denseness,  and  the  hyaline  material  which  formed  their 
ISO 
h 
300 
Fig.  50.  Section  of  cortex  of  kidney  fourteen  liours  after  experimental 
haemoglobinuria.  Rabbit  g,  Table  35.  The  section  shows  portions  of 
three  Malpighian  bodies  and  a  number  of  tubules,  chiefly  convoluted 
tubules,  all  of  which  are  normal  in  aspect,  the  epithelium  being 
unaltered.  Three  of  the  smaller  tubules  show  casts  of  hyaline 
material,  hut  no  darkly-staining  granules  are  to  be  seen  in  any  of  the 
tubules.  None  of  the  tubules  are  dilated  I'ixed  in  Flemming’s  solution. 
Stained  with  iron  alum  haematnxylin.  x  i,s.5- 
basis  contained  sometimes  few,  sometimes  numerous  granules.  Most 
of  the  casts  were  surrounded  by  hyaline  material  (Figs.  48  and  49) 
The  lumen  of  some  of  the  cortical  tubules  was  filled  with  hyaline 
material  which  resembled  haemoglobin,  inasmuch  as  it  readily 
up  acid  dyes  (Figs.  45  and  46).  No  change  was  seen  in  the  blood 
vessels.  The  renal  epithelium  was  perfectly  normal  in  aspect. 
The  condition  of  the  kidneys  during  experimental  haemo¬ 
globinuria  is  represented  diagrammatically  in  Figs.  61 B  and  Ci7B. 
s» 
iVH 
