To  the  deitrriptioD  of  the  frontal  lobe  the  nathor  devotes  a  book  of
about  ODC  hundred  and  thirty  pages  and  cites  a  hundred  and  aeveuteen
ftotbortttea  In  the  oourse  of 'hi*  nrgument.  'l*he  nryle  In  exceptionally
ladd  and  vlicorouii  nnd  the  dfnt^-riptiond  c-unciite.  F'rom  thU  It  appears
that  a  careful  and  conscientious  mithor  cam  dnd  a  good  deal  that  la
worth  uyloi;  concerninK  the  extern»l  iippt-Hrance  of  «Ten  one  lobe  of  the
bmtn.  'rhe  obMrvatioDH  were  riaade  on  freitb  brains  from  which  the  pfa
had  been  removed,  and  over  400  hemisphere*  were  utilized.  In  de^crib-
lag  the  «ulei  ami  gyri  of  thin  region  the  author  ha^  paid  particular atten-
tkin  U>  the  variations  which  CKxar,  and  has  attempted  to  show  the  rela-
dotu  between  the  extremt:  vitrintion^  which  are  observL-d  In  normal
Indlvldualit.  The  value  of  this  method  becomes  at  once  apparent  when
we  recall  that  the  brain?  of  all  >orl.))  of  defectives,  of  Individuals  possvs-
dof  remarkable  or  peculiar  mental  attainments,  and  of  criminals  are.  Id
iDereuInx  Dumber*,  the  subjects  of  description,  in  which  It  U  conttoo-
ooalj  sought  to  associate  the  sculpturlafc  of  the  surface  with  the
peowlArltles  known  to  have  ousted  durluK  life.  Under  these  clroom-
■tuum  and  with  the  possibilities  of  the  normal  variations  but  Iraper^
fectly  recoeulzed,  it  Is  but  little  remarluible  that  a  good  many  appear^
ui«ea  of  the  briln  surface  which  have  been  desl^ated,  "  peculiar,**
*' anomalous,"  *^atavUtlc,"  "crlmlual,"  '*  therlomorphtc,"  etc.,  are
really  fonnd  to  be  variations  that  appear  In  the  normal  brain  and  to
which,  therefore,  no  peculiar  slgnidcsuce  can  proi>erlj'  t>o  attached.
The  material  of  the  book  U  arraof^ed  under  the  general  heads  of  Lim-
iting Fissures,  Frlucipal  Sulci,  Secondary  Sulci,  Gyrl,  and  Comparative
Anatomy.
