328 
Book  Reviews. 
Am.  Tour.  Pharm. 
May,  19 19. 
for  practice,  and  a  number  of  the  manufacturing  chemical  processes, 
the  operations  are  identical  with  those  in  the  U.  S.  P.  or  N.  F. 
By  many  it  is  believed  best  for  a  student  to  work  directly  from 
the  official  guides  as  in  that  way  much  greater  familiarity  is  ob- 
tained with  other  parts  of  the  text  as  the  "  rubrics,"  tests,  doses, 
etc.,  and  also  with  other  preparations  of  the  same  class,  and  when 
the  student  himself  is  required  to  reduce  the  formulas  to  a  workable 
laboratory  quantity,  he  secures  valuable  practice,  confidence  in  his 
ability  to  use  the  Pharmacopoeia,  and  an  emphasis  upon  the  formula. 
The  directions  given  in  the  manual  are  usually  verbatim  with,  or 
at  least  follow  the  style  of  the  U.  S.  P.  or  N.  F.  One  feels  that  an 
excellent  opportunity  to  introduce  explanations,  reactions  and  more 
detailed  instructions  or  desirable  cautions,  has  been  missed.  It  is 
a  surprise  to  find  no  less  than  four  fluid  extracts  among  the  few 
galenicals  given,  while  such  desirable  and  important  preparations  as 
solution  of  magnesium  nitrate,  ointment  of  rose  water,  hydriodic 
acid  and  its  syrup,  etc.,  are  not  included. 
On  the  whole,  no  doubt,  a  manual  of  this  character  serves  a 
useful  purpose  for  the  school  where  it  is  developed  and  may  be 
suggestive  elsewhere,  but  its  limited  scope,  lack  of  flexibility  and 
failure  to  provide  for  that  element  of  personal  selection,  expansion 
and  initiative,  which  is  an  important  quality  of  every  efficient  teacher, 
will  probably  restrict  it  use  mainly  to  its  authors  own  field  of 
activity. 
E.  F.  C. 
A  Critical  Revision  of  the  Genus  Eucalyptus.  By  J.  H. 
Maiden,  I.O.S.,  F.R.S.,  F.L.S.,  Government  Botanist  of  New 
South  Wales  and  Director  of  the  Botanic  Gardens,  Sydney. 
Vol.  IV,  Part  6.  Published  by  the  Government  of  the  State  of 
New  South  Wales. 
From  time  to  time,  the  parts  of  this  classic  monograph  have  been 
reviewed  in  the  pages  of  the  American  Journal  of  Pharmacy 
as  they  have  been  received.  The  part  now  at  hand  continues  in 
the  same  excellent  and  scientific  style  as  in  the-  preceding  parts  to 
present  with  fine  illustratons  seven  distinct  species  of  Eucalypti  along 
with  such  varieties  as  are  recognized. 
The  species  considered  are  Eucalyptus  occidcntalis  Endlicher 
and  variations  from  the  normal  description  worthy  of  considera- 
