95 
and  irregularly  (Figs.  22,  24),  sometimes  very  densely  packed 
together  (Figs.  23,  24),  the  casts  then  becoming  of  a  dark  brown  or 
reddish  brown,  almost  black,  colour.  The  size  of  the  granules  varied 
from  0'5  4,  or  les.s,  to  as  much  as  4  /u  to  4’5  /x,  not  infrequently  both 
I'lG.  21.  Hyaline  casts  in  urine  of  rabbit  (I'.xp.  2,  Table  ,?5)  four  hours 
after  intravenous  injection  of  dissolved  haemoglobin.  Magnification 
tSo  diameters. 
fine  and  coarse  granules  being  present  together  (Figs.  22  and  24). 
Free  granules  were  also  met  with,  sometimes,  if  not  generally, 
obviously  due  to  the  breaking  up  of  the  casts.  The  free  granules 
appeared  in  the  form  of  masses,  held  together  b}/  colourless  material 
I - 1 - 1 
Of.,  -CO  ^  -3  00  l-L 
hiG.  22.  (Iraniilar  and  epithelial  casts  in  urine  or  rabbit  (Kxp.  3,  Table 
3^  twenty  hours  after  intravenous  injection  of  dissolved  haemoglobin. 
Magnification  iSo  diameters. 
