of  a  very  soft  consistence ;  sometimes  they  appeared  to  be  quite 
unconnected  with  one  another.  The  granules  occasionally  on 
standing  became  partly  obliterated  as  the  result  of  decomposition  of 
the  urine.  When  this  occurred,  as  also  when  the  granules  were 
I  I  I 
lOOfi.  iOOfA 
Fig.  23.  (tranular  and  hyaline  cast.s  in  urine  of  rabbit  (Fixp.  15,  Table 
35)  eighty-five  minutes  after  intravenous  injection  of  dissolved 
haemoglobin.  Magnification  180  diameters. 
scanty,  it  became  possible  to  observe  the  character  of  the  matrix  of 
the  casts.  This  was  of  a  hyaline  material,  not  unfrequently  showing 
creases  or  bends  (Figs.  21,  23).  Sometimes  the  ca.sts  exhibited  here 
and  there  small  masses  suggestive  of  nuclei.  In  the  unstained 
condition  it  was  difficult  to  decide  whether  these  were  really  nuclei  or 
°  '00  iOO  ^ 
I'lG.  24.  (iranular  and  epithelial  ca.sts  in  urine  of  rabbit  (Fxp.  6, 
I  able  351  twelve  and  a  half  hour.s  after  intravenous  injection  of 
dissolved  haemoglobin.  Magnification  180  diameters. 
