Am.  Jour.  Pnarm. 
June,  1894. 
Reviews. 
313 
are  shown  to  yield  a  green  color  with  salts  of  iron,  and  not  a  blue,  as  generally 
stated. 
The  tannin  from  the  Mangrove  bark  (Rhizophora  Mangle,  L)  is  proved  to  be 
a  catechol  tannin  closely  allied  to  those  of  rhatany,  canaigre  and  mimosa. 
The  seventh  section  is  devoted  to  Canaigre  tannin  obtained  from  the  tuberous 
roots  of  the  Rumex  hymenosepalus  Torr.  The  author's  investigations  indicate 
its  close  relationship  with  the  tannins  existing  in  mangrove  and  rhatany.  The 
extensive  distribution  of  this  plant  in  the  Southwestern  States  and  Territories 
and  the  ease  with  which  it  can  be  cultivated,  and  the  large  percentage  of  tan- 
nin contained  in  the  roots,  indicate  that  in  the  future  it  will  be  a  valuable 
source  of  supply  for  tanning  purposes. 
The  wood  of  the  American  Chestnut  is  stated  to  contain  7-85  per  cent,  of  tan- 
nin, and  the  bark  7*31  per  cent.,  and  the  reactions  and  elementary  analysis 
point  to  its  probable  identity  with  gallo-tannic  acid. 
The  index  of  the  literature  of  the  tannins  continued  from  the  first  volume  is 
also  exceedingly  valuable.  The  book  is  commended  to  those  interested  in  the 
chemistry  of  the  vegetable  products,  and  especially  to  those  who  are  practically 
engaged  in  the  manufacture  and  application  of  these  products  in  the  industrial 
arts,  such  as  dyeing  and  tanning.  G.  M.  B. 
Essentials  of  Practice  of  Pharmacy,  arranged  in  the  form  of  Questions  and 
Answers.  Second  edition.  By  Lucius  K.  Sayre,  Ph.G.  Philadelphia  :  W.  B. 
Saunders.    1894.    Pp.  200. 
The  new  Pharmacopoeia  has  made  necessary  a  revision  of  this  work.  The 
author  does  not  claim  originality  for  this  work,  but  an  arrangement  of  phar- 
maceutical facts  designed  to  give  the  student  and  quiz  master  some  variety 
from  the  usual  classification . 
Therapeutic  Terms  for  Pharmacists  and  Physicians.  By  H.  M.  Whelpley. 
M.D.    St.  Louis,  Mo.,  1894.    Published  by  the  author.  Pp.68. 
Dr.  Whelpley  found,  during  his  own  studies,  and  while  teaching  medical  and 
pharmaceutical  students  "  that  even  large  and  expensive  medical  dictionaries 
failed  to  furnish  definitions  for  all  of  the  therapeutic  terms  of  current  litera- 
ture." Therefore,  he  has  collected  in  a  handy  volume  much  valuable  informa- 
tion in  the  shape  of  concise  definitions  to  words  in  use  in  pharmaceutical  and 
medical  science. 
Die  Alkalien.  Darstellung  der  Fabrikation  der  gebrauchlichsten  Kali-  und 
Natron- Verbindungen,  von  Dr.  S.  Pick,  Fabriksdirector.  Zweite  verbesserte 
Auflage.    Wien  :  A.  Hartleben's  Verlag.    398  Seiten. 
The  Alkalies,  description  of  the  manufacture  of  the  most  commonly  used 
Potassium  and  Sodium  compounds.  By  Dr.  S.  Pick,  Factory  Director.  Second 
revised  edition.    Vienna  :  A.  Hartleben's  Publishing  House.    Pp.  398. 
The  Hartleben  Library,  a  series  of  technical  chemical  hand-books  of  portable 
size,  has  now  reached  Vol.  208,  and  covers  a  wide  range  of  the  applications  of 
chemistry  to  the  useful  arts.  The  volume  above  quoted  is  one  of  the  earlier 
of  those  which  appeared  a  number  of  years  ago,  and  has  now  been  re-written 
and  brought  up  to  date.  An  examination  of  its  pages  shows  that  this  has  been 
done  with  reasonable  fullness.  Castner's  improvements  in  the  manufacture  of 
metallic  sodium  have  been  included,  and  the  account  of  the  ammonio-soda 
