Am.  Jour.  Pharm. ") 
July,  1913.  j 
Book  Review. 
335 
method  it  is  collected.  Whether  any  particular  tree  will  yield  gum 
or  not  can  only  be  ascertained  by  tapping,  as  only  the  larger  trees 
and  not  even  all  of  them  yield  gum. 
None  of  the  gum  obtained  near  Chiengmai  is  exported,  but 
nearly  all  of  it  is  used  locally,  mixed  with  pig's  fat,  as  an  applica- 
tion for  the  hair.  Most  of  the  gum  which  reaches  Chiengmai  is 
brought  there  by  the  Kamus  during  the  cold  season  from  the  Luang 
Prabang  region  to  the  East  of  the  Me  Kong.  A  native  merchant 
buys  it  and  ships  it  to  Bangkok.  This  merchant  estimates  his  yearly 
purchases  at  5  sens  (approximately  10  cwt.),  but  for  the  last  two 
years  the  quantity  has  been  less,  because,  he  says,  it  no  longer  pays 
the  Kamus  to  collect  it  and  bring  it  down.  Although  the  merchant 
had  heard  that  the  tree  grew  on  Doi  Sootep  he  had  never  bought 
gum  from  any  district  but  Luang  Prabang. 
Gum  benzoin  is  also  brought  to  Korat  in  Lower  Siam  but  no 
information  as  to  its  source  is  available. — Kew  Bulletin.  Reprinted 
in  Bangkok  Times  Weekly  Mail. 
Charles  S.  Braddock,  Jr. 
BOOK  REVIEW. 
Proceedings  of  the  American  Pharmaceutical  Association, 
including  the  report  on  the  progress  of  pharmacy  to  January  1, 
1 9 1 2.  Also  the  constitution,  by-laws  and  roll  of  members.  Scio, 
Ohio :  Published  by  the  American  Pharmaceutical  Association,  1912. 
This  long  expected  volume  has  finally  reached  the  members  of 
the  American  Pharmaceutical  Association  and  despite  the  fact  that 
the  title  is  somewhat  of  a  misnomer  because  the  book  contains  no 
record  of  the  proceedings  at  the  annual  meeting  of  the  American 
Pharmaceutical  Association,  the  volume  will  nevertheless  be  gen- 
erally welcome  because  of  the  524  pages  devoted  to  the  report  on 
the  progress  of  pharmacy  from  July  1,  19 10,  to  December  31,  191 1. 
This  report  is  prefaced  by  an  introductory  in  which  the  venerable 
reporter  on  the  progress  of  pharmacy  records  the  origin  and  sub- 
sequent development  of  these  reports  and  expresses  the  hope  that 
the  proposed  publication  of  selected  abstracts  in  the  Journal  of  the 
Association  will  disarm  much  of  the  criticism  formerly  made  re- 
garding delay  in  publication  of  the  annual  volume.  In  addition  to 
the  proposed  publication  of  selected  abstracts  in  the  journal  of  the 
