240 
Reviews. 
j  Am.  Jour.  Pharm. 
(.        May,  1902. 
brought  up  to  date  by  the  addition  of  an  appendix,  embodying  the 
information  on  the  indicators  introduced  since  the  appearance  of 
the  first  edition.  In  this  list  are  mentioned:  alizarin  green  B, 
ammoniacal  copper  solution,  corallin — malachite  green,  diazopara- 
nitraniline — propylmetacresol,  iron  isopyrotritarate,  iron  salicylate, 
patent  blue  L,  perezol,  potassium  ferrocyanide  with  ammonium 
molybdate,  and  sodium  alizarinsulphonate. 
The  work  is  systematically  arranged,  reliable,  and  a  practical 
guide  for  the  laboratory  worker,  as  well  as  a  ready  means  of  reference 
to  all  desiring  any  information  on  the  source,  preparation  and  appli- 
cation of  indicators  and  test-papers,  as  well  as  their  tests  for  sensi- 
tiveness. 
A  Laboratory  Guide  to  the  Study  of  Qualitative  Analysis. 
By  E.  H.  S.  Bailey  and  Hamilton  P.  Cady.  Fourth  edition.  i2mo, 
235  pp.,  cloth,  $1.25  net.  Philadelphia:  P.  Blakiston's  Son  &  Co., 
1901. 
While  there  are  many  manuals  on  qualitative  analysis,  still  any 
work  in  which  are  considered  the  more  modern  theories  underlying 
analytical  chemistry,  and  which  attempts  to  present  some  new  facts 
and  investigations,  is  very  much  desired.  In  the  present  work  the 
authors  apply  the  dissociation  theory  of  Arrhenius  and  the  law 
of  mass  action  as  enunciated  by  Gulberg  and  Waage  in  correlat- 
ing and  interpreting  chemical  phenomena,  and  give  a  new  method 
for  the  separation  of  arsenic,  antimony  and  tin  and  also  for  the  sepa- 
ration and  identification  of  the  acids. 
The  properties  of  the  metals  and  precipitates  with  the  special 
tests,  blowpipe  reactions  are  given  and  numerous  notes  of  special 
precautions  are  interspersed  in  the  text.  The  methods  of  separa- 
tion of  the  ions  and  various  groups,  as  also  the  special  methods  for 
examining  unknown  substances,  are  also  valuable. 
The  book  is  distinctly  a  modern  one  and  is  inspired  by  the  several 
foundation  works  of  Ostwald  in  inorganic  and  analytical  chemistry. 
It  is  an  ^  interesting  and  valuable  work  on  qualitative  analytical 
chemistry. 
Die  Rohstoffe  des  Pflanzexreiches.  Versuch  einer  technischen 
Rohstofflehre  des  Pflanzenreiches.  Von  Dr.  Julius  Wiesner.  2te  ganz- 
lich  umgearbeitete  und  erweiterte  Auflage.  7.  Lieferung  (Bd.  II, 
Bogen  11-20);  8.  Lieferung  (Bd.  II,  Bogen  21-30).  Mit  Textfigur 
45-75.    Leipzig:  Verlag  von  Wilhelm  Engelmann,  1901-1902. 
