Reviews. 
( Am.  Jour.  Pharm. 
\      March,  189G. 
a  volume  which  is  a  credit  to  both  author  and  publishers.  Two  new  illustra- 
tions have  been  added  to  this  edition,  otherwise  its  pages  bear  a  close  resem- 
blance to  those  of  its  predecessor.  Neither  edition  was  issued  for  personal 
gain,  and  the  author  pledges  himself  to  place  any  profit  to  the  credit  of  the 
Lloyd  Library,  which  will  eventually  be  devoted  to  public  educational  purposes. 
We  predict  that  the  author  will  find  the  second  edition  exhausted  almost  as 
readily  as  the  first. 
SELECT  Extra-Tropical  Plants.  By  Baron  Ferd.  von  Mueller.  Ninth 
edition.    Robert  S.  Brain,  Government  Printer,  Melbourne,  Australia,  1895. 
The  object  of  this  work  is  to  bring  together  some  condensed  data  in  popular 
language  on  all  the  principal  economic  plants  hitherto  known  to  prosper  be- 
yond the  equinoctial  zone.  Information  of  this  kind  is  widely  scattered,  and 
often  only  accessible  through  voluminous  and  costly  works  in  various 
languages. 
In  654  octavo  pages,  the  author  has  condensed  an  immense  amount  of  useful 
information.  His  lucid  literary  style  has  made  the  book  very  readable,  and 
his  judicious  selection  of  all  extra-tropical  plants  which  have  any  present  or 
prospective  value,  makes  it  almost  an  encyclopaedia  of  economic  botany.  No 
geographical  section  is  especially  favored,  one  can  find  the  useful  plants  at  his 
door  in  this  country  as  fully  described  as  those  growing  in  Australia  or  India. 
Practical  Studies  in  Fermentation,  being  contributions  to  the  life  his- 
tory of  micro-organisms.  By  Emil  Chr.  Hansen,  Professor  and  Director  of  the 
Carlsberg  Physiological  Laboratory,  Copenhagen,  translated  by  Alex.  K.  Miller. 
London:  E.  &  F.  N.  Spon ;  New  York  :  Spon  &  Chamberlain,  1896. 
The  investigations  brought  together  in  this  book  treat  in  the  main  of  the 
great  questions  of  the  circulation  in  nature  of  the  alcoholic  fungi,  their  rela- 
tionship to  the  diseases  of  beer,  the  pure  cultivation  of  yeast  and  the  employ- 
ment of  systematically  selected  species  and  races.  In  the  first  chapter  the 
author  gives  some  historical  data  concerning  the  introduction  of  pure  yeast 
cultures  into  the  brewing  industry,  which  he  accomplished  over  twelve  years 
ago.  The  results  at  first  were  of  doubtful  utility;  but  gradually,  as  more  infor- 
mation was  gained,  it  was  found  that  objectionable  bacteria  were  not  alone  the 
cause  of  some  of  the  commonest  and  most  serious  diseases  of  beer,  but  that 
turbidity  and  objectionable  changes  in  flavor  were  frequently  caused  by  certain 
species  of  yeast.  It  was  found,  therefore,  "that  the  pitching  yeast  should  consist 
only  of  a  single  species,  namely,  that  best  suited  to  the  brewery  in  question." 
The  author  then  gives  a  brief  account  of  his  own  method  of  pure  cultivation, 
and  points  out  how  his  theories  and  practice  differ  from  other  well-known  inves- 
tigators, notably  Pasteur.  Altogether,  it  is  a  book  full  of  interest,  not  only  to 
those  connected  with  the  brewing  industry,  but  to  everyone  interested  in  fer- 
mentation and  the  natural  history  of  micro-organisms. 
Formulaire  des  Medicaments  Nouveaux  pour  1896.  Par  H.  Bocquil- 
lon-Limousin.  Avec  une  introduction  par  Henri  Huchard.  7e  edition.  Paris: 
J.-B.  Bailliere  et  Fils. 
Everyone  interested  in  the  newer  remedies  will  examine  this  book  with 
profit.  The  most  notable  novelties  for  this  year  are  :  Airol,  Apolysine,  Argon- 
ine,  Benzacetine,  Cannabindone,  Caseinate  de  fer,  Citrophene,  Cotarnine, 
Cristallose,  Cuprohemol,  Dihydroresorcine,  Eudoxiue,  Ferripyrine,  Gallicine, 
