Sometimes,  we  see,  on  the  cut  surface,  a  generally  diffused  brownish
tint,  derived  from  thickly  sprinkled  minute  dots  :  sometimes,  a  whole

'  This  may  he  the  case  with  -what  Miiller  named  Carcinoma  fasciculatum  seu
hyaliiram.  But,  judging  from  his  description  and  Schuh's,  I  cannot  tell  trhcther  it  is
a  disease  which  I  have  not  yet  seen,  or  whether  (as  I  am  more  inclined  to  helieve)  the
name  has  not  heen  applied  to  some  specimens  of  the  soft,  flickering,  mammary  or
parotid  glandular  tumours,  or  to  the  mammary  proliferous  cysts  that  are  prone  to
recur  (see  pp.  432,  563).
746


STRUCTURE  OF  MELANOID   CANCER.
mass  is  uniformly  black  :  sometimes,  one  or  more  deep  black  spots  ap.
pear  m  the  midst  of  a  pnre  white  brain-like  mass  :  sometimes  (as  in
the  specimen  here  fignred)  in  half  a  tumour  there  are  various  shades
of  brown  and  black,  in  the  other  half  the  same  texture  nncoloured :
sometimes  a  whole  mass  is,  as  it  were,  delicately  painted  or  mapped
as  with  Chinese  ink.  There  are  thus  to  be  found,  in  melanoid  cancers
aU  plans  and  all  degrees  of  blackening  ;  and
these  diversities  may  be  seen  even  in  different
parts  of  the  same  tumour,  or  in  difiFerent  tu-
mours in  the  same  person.'  Nay,  even  in  can-
cers that  look  colourless  to  the  naked  eye,  I
have  found,  with  the  microscope,  single  cells
or  nuclei  having  the  true  melanotic  characters.
And  both  the  general  and  the  microscopic
aspect  of  the  disease  may  be  yet  further  diversi-
fied by  the  coincidence  of  degeneration  or
haemorrhages,  producing,  in  the  unblackened
parts  of  the  tumours,  various  shades  of  yeUowi
or  of  blood-colour.
