••  This  new  edition  must  be  of  the  highest  value  to  colliery  surveyors,  proprietors  and  mana-
gers."— Colliery  Guardian.
Metalliferous  3Iinerals  and  Mining.
TREATISE  ON  METALLIFEROUS  MINERALS  AND
MINING.    By  D.  C.  Davies,  F.G.S.,  Mining  Engineer,  &c..  Author  of  "A

Treatise  on  Slate  and  Slate  Quarrying."     Illustrated  with  numerous  Wood

Engravings.     Fourth  Edition,  carefully  Revised.    Crown  8vo,  12s.  6rf.  cloth.
"Neither  the  practical  miner  nor  the  general  reader  interested  in  mines  can  have  a  better  book
for  h.is  companion  and  his  guide." — Mining  Journal.
"The  volume  is  one  which  no  student  of  mineralogy  should  be  viithout."— Colliery  Guardian,

"A  book  that  will  not  only  be  useful  to  the  geologist,  the  practical  miner,  and  the  metallurgist,
but  also  very  interesting  to  the  general  puhUc."— Iron.
"  As  a  history  of  the  present  state  of  mining  throughout  the  world  this  book  has  a  real  value,
and  it  supplies  an  actual  want,  for  no  such  information  has  hitherto  been  brought  together  within
such  limited  space." — Athenautn,

Earthy  Minerals  and  3Iining.
TREATISE  ON  EARTHY  AND  OTHER  MINERALS  AND
MINING.  By  D.  C.  Davies,  F.G.S.  Uniform  with,  and  forming  a  Com-
panion Volume  to,  the  same  Author's  "  Metalliferous  Minerals  and  Mining."
With  76  Wood  Engravings.    Second  Edition.    Crown  8vo,  12s.  6d.  cloth.
"It  is  essentially  a  practical  work,  intended  primarily  for  the  use  of  practical  men.  .  .  .  We
do  not  remember  to  have  met  with  any  English  work  on  mining  matters  that  contains  the  same
amount  of  infonnation  packed  in  equally  convenient  form." — Academy.
"  fhc  book  is  clearly  the  result  of  many  years'  careful  work  and  thought,  and  we  should  be
inclined  to  rank  it  as  among  the  very  best  of  the  handy  technical  and  trades  manuals  which  have
recently  appeared." — British  Quarterly  Revie-w.
