Am.  Jour.  Pharm. 
January,  1917. 
Book  Reviews. 
43 
be  termed  the  Physics  of  Pharmacy.  Part  II  is  named  Practical 
Pharmacy  and  this  could  with  propriety  be  denominated  Galenical 
Pharmacy.  Part  III  is  a  concise  treatment  of  Pharmaceutical 
Chemistry. 
Chapter  I  is  a  succinct  account  of  the  intent,  history  and  plan 
of  the  United  States  Pharmacopoeia.  In  subsequent  chapters  of 
Part  I  the  subjects  of  weights  and  measures,  specific  gravity,  heat, 
subdivision  of  drugs,  solution,  etc.,  are  presented.  The  chemical 
and  physical  principles  underlying  the  process  of  solution  are  set 
forth  and  the  subject  of  "Colloidal  Solutions"  is  clearly  explained 
in  a  paragraph  devoted  to  this  interesting  phenomenon. 
One  notes  that  throughout  the  book  the  word  "  mil "  is  always 
followed  by  "(or  Cc.)."  The  publicity  already  given  to  the  adop- 
tion of  the  word  "  mil "  by  both  the  U.  S.  Pharmacopoeia  and  the 
National  Formulary  should  have  obviated  the  necessity  for  anything 
more  than  an  explanatory  statement  and  this  monotonous  tautology 
could  have  been  omitted. 
The  subject  of  Sterilization  is  considered  in  "  Chapter  VII. 
Solution  "  and  again  in  "  Chapter  IX.  Separation  of  Non-Volatile 
Matter."  Sterilization  and  pasteurization  are  of  sufficient  impor- 
tance to  merit  treatment  in  a  separate  chapter  as  distinct  processes 
and  more  especially  since  the  Pharmacopoeia  and  National  Formu- 
lary have  set  such  an  example  which  can  be  followed  by  works  on 
pharmacy. 
In  a  short  chapter  "  Crystallization  "  is  admirably  presented  to 
the  extent  of  the  needs  of  the  pharmacist. 
Under  the  classification  of  the  products  used  in  pharmacy,  we 
note  that  in  the  treatment  of  "  Fats,"  the  various  official  fixed  oils 
and  fats  are  enumerated  and  in  a  separate  paragraph  each  is  de- 
scribed, and  then  in  a  chapter  in  Part  III.  Pharmaceutical  Chem- 
istry, much  of  this  is  repeated. 
There  are  a  few  statements  in  the  book  to  which  one  may  take 
exception.  The  pharmacist  will  object  to  considering  the  official 
Compound  Solution  of  Cresol  as  an  emulsion  (p.  369).  Botany 
requires  exact  adherence  to  its  scientific  terms  and  definitions.  The 
statement  on  page  108,  "only  the  inner  bark  being  employed,  the 
outer  epidermis  should  be  removed,"  is  subject  to  the  criticism  that 
the  writer  evidently  uses  "  epidermis  "  when  he  intends  the  outer 
layers.  In  the  official  barks  the  outer  portion  removed  is  much 
more  than  the  epidermis  and  not  infrequently  includes  the  cork  and 
