Am.  Jour.  Pharm.  \ 
September.  1907.  i 
Book  Reviews. 
439 
acetylene  was  directly  built  up  and  from  this  many  other  hydrocarbons 
and  their  derivatives.  The  whole  subject  of  thermo-chemistry  and 
the  experimental  study  of  the  heat  of  reaction  was  developed  by 
him,  and  with  this  the  subject  of  gas  analysis  was  greatly  improved. 
Called  in  to  study  explosives  in  connection  with  the  defence  of 
Paris  in  1870,  he  made  most  elaborate  studies  on  the  subject  and 
became  one  of  the  greatest  authorities  upon  this  subject.  Berthelot 
devoted  much  time  to  biological,  physiological  and  agricultural 
chemistry.  Chemical  theory  was,  moreover,  greatly  developed  by 
the  studies  and  publications  of  Berthelot,  and  finally  the  history  of 
chemistry  and  its  forerunner  alchemy,  was  studied  by  him  and  pre- 
sented  in  his  writings  with  great  thoroughness.  He  did  much  for 
education  in  France,  having  been  Minister  of  Public  Education  in 
1886-87,  and  in  1895-96  ne  became  Minister  of  Foreign  Affairs 
and  the  head  of  his  country's  diplomatic  service. 
He  was  a  most  prolific  writer,  having  published  some  1,500  papers 
and  scientific  notices,  besides  some  forty-six  volumes  of  more 
permanent  value. 
S.  P.  Sadtler. 
BOOK  REVIEWS. 
Practical  Physiological  Chemistry.  A  book  designed  for  use 
in  courses  in  practical  physiological  chemistry  in  schools  of  medicine 
and  of  science.  By  Philip  B.  Hawk.  With  two  full-page  plates 
of  absorption  spectra  in  colors,  four  additional  full-page  color  plates 
and  one  hundred  and  twenty-six  figures,  of  which  twelve  are  in 
colors.    Philadelphia :  P.  Blakiston's  Son  &  Co.    $4  net. 
This  volume  on  physiological  chemistry  by  Dr.  Hawk  is  one  of 
the  most  interesting  and  valuable  that  it  has  been  our  pleasure  to 
review.  It  is  original,  up-to-date  and  contains  just  such  information 
as  the  practical  man  and  the  worker  in  the  laboratory  are  looking  for. 
About  100  pages  are  devoted  to  the  studies  of  carbohydrates;  pro- 
teids ;  fats  ;  bile ;  salivary,  gastric  and  pancreatic  digestion.  About 
an  equal  number  of  pages  are  devoted  to  the  study  and  examination 
of  urine.  The  remaining  portion  of  the  book,  about  200  pages,  is 
given  up  to  the  consideration  of  milk,  blood,  feces,  putrefaction  pro- 
ducts, etc.    Some  of  the  recent  work  of  Reichert  and  Brown  on 
