Am.  Jour.  Pharm. 
July,  1919. 
Book  Reviews. 
487 
tendency  being  toward  the  use  of  "  simples,"  and  therefore  problems 
in  incompatibility  less  frequently  force  themselves  upon  the  com- 
pounder. There  is  always  great  danger  of  over-emphasis  on  this 
subject,  since  the  physician  resents  constant  change  in  his  prescrip- 
tion, but  the  master  prescriptionist  is  frequently  able  to  gain  the 
confidence  of  his  physician  friends  by  judicious  and  skillful  use  of 
his  scientific  training  and  cleverness  in  compounding  mixtures  in  a 
compatible  and  elegant  form. 
This  volume  should  find  its  place  in  the  library  of  every  active 
prescriptionist  and  will  be  of  great  value  in  clearing  disputed  points 
in  prescription  work. 
E.  F.  C. 
A  Critical  Revision  of  the  Genus  Eucalyptus.  By  J.  H. 
Maiden,  I.S.O.,  F.R.S.,  F.L.S.,  Government  Botanist,  New 
South  Wales,  and  Director  of  the  Botanic  Gardens,  Sydney. 
Vol.  IV,  Part  7. 
The  part  7,  Vol.  IV,  being  part  XXXYII  of  the  complete  work, 
now  at  hand  carries  on  this  classic  monographic  treatment  of  the 
interesting  Eucalypti,  in  the  same  manner  and  style  as  the  preceding 
parts  which  from  time  to  time  have  been  reviewed  in  these  pages. 
The  species  treated  therein  are  E.  clavigera  A.  Cunn  with  the  vari- 
ous affinities  and  connecting  varietal  types  :  E.  aspera  F.  v.  M. ;  E. 
grandifolia  R.  Br.  ;  E.  papuana  F.  v.  M.  The  excellent  illustrations 
are  of  the  same  high  order  that  appeared  in  all  of  the  parts  as 
published. 
G.  M.  B. 
