AB^SS;SSfm-}     Reviews  and  Bibliographical  Notices.  145 
Quercus,  Pistacia,  Rhus  and  Tamarix.  The  barks  are  treated  by  v. 
Hohnel  in  Chapter  XVI,  and  he  has  devoted  over  fifty  pages  to  the 
detailed  study  of  twenty-one  different  commercial  barks.  While  phar- 
macists will  be  particularly  interested  in  the  treatment  of  cinchona, 
cinnamon  and  quillaja,  others  will  be  as  much  so  in  the  information 
on  the  barks  of  various  oaks,  hemlocks  and  other  coniferous  trees. 
The  chapter  on  woods  by  Wilhelm  is  one  of  the  most  complete 
and  thorough  in  the  book,  and  this,  together  with  the  chapter  on 
barks,  furnishes  an  excellent  preparation  for  the  study  of  Chapter 
XVIII,  which  is  devoted  to  the  consideration  of  fibres  by  Wiesner. 
The  750  pages  devoted  to  the  woods,  barks  and  fibres  form  prob- 
ably the  most  instructive  monographs  on  these  subjects,  and  will  be 
referred  to  for  years  to  come  by  all  those  who  are  able  to  compre- 
hend the  exhaustive  scientific  researches  pertaining  to  these  sub- 
jects and  their  application  in  every  industrial  operation  in  which 
these  materials  or  their  products  may  enter. 
Chapters  XIX-XXIII  are  devoted  to  the  consideration  of  roots 
and  rhizomes  by  v.  Vogl;  leaves  and  herbs  by  Krasser;  flowers  and 
parts  of  flowers  by  Linsbauer,  and  seeds  and  fruits  by  Hanausek. 
All  of  these  are  of  particular  interest  to  the  pharmacist,  as  in  these 
chapters  are  exhaustively  considered,  among  other  commercial  prod- 
ucts, calamus,  ginger,  orris  root,  Spanish  saffron,  cloves,  insect 
flowers,  rose  petals,  jasmin  flowers,  nutmeg,  mace,  tonka,  flaxseed, 
ricinus,  vanilla,  hops,  illicium,  etc. 
This  new  edition  of  Wiesner's  "  Die  Rohstoffe  "  is  no  doubt  the 
most  important  technical  work  in  this  line  that  has  appeared  in  recent 
years.  It  is  a  new  book,  modernized  in  every  essential  and  written  by 
men  who  have  thoroughly  comprehended  the  importance  of  scientific 
researches  in  the  study  of  every  product  of  the  vegetable  kingdom 
that  is  utilized  in  the  arts.  Those  who  are  interested  in  woods,  barks 
and  fibres ;  or  gums,  resins,  starches,  fats,  waxes,  caoutchouc  prod- 
ucts and  the  like;  or  tannins,  opium,  aloes,  indigo,  yeasts,  etc.;  or 
products  to  be  used  for  foods,  medicine,  perfumery,  as  well  as  other 
economic  purposes,  will  find  the  book  invaluable.  No  reference 
library  of  a  pharmaceutical  school,  medical  college,  or  technological 
institution  will  be  complete  without  this  book,  and  when  we  con- 
sider the  low  price  at  which  it  is  offered,  viz :  fifteen  dollars,  we 
may  say  that  every  one  who  is  utilizing  products  of  the  vegetable 
kingdom  ought  to  possess  the  book  for  ready  reference  and  careful 
perusal  whenever  opportunity  affords. 
