242  Reviews  and  Bibliographical  Notices.      I AmMay?L9a5.arm 
are  using  tablet  machines  in  connection  with  prescription  work. 
The  chapter  on  emulsions  has  been  largely  rewritten  and  includes 
the  latest  theories  of  emulsification,  and  also  improved  methods  and 
formulae  for  commercial  emulsions. 
The  American  Year-Book  of  Medicine  for  1905.  A  Yearly 
Digest  of  Scientific  Progress  and  Authoritative  Opinion  in  all 
branches  of  Medicine  and  Surgery,  drawn  from  journals,  mono- 
graphs, and  text-books  of  the  leading  American  and  foreign  authors 
and  investigators.  Arranged,  with  critical  editorial  comments,  by 
eminent  American  specialists,  under  the  editorial  charge  of  George 
M.  Gould.  In  two  volumes.  Volume  I,  including  General  Medicine. 
Two  octavos  of  about  700  pages  each,  fully  illustrated.  Philadel- 
phia and  London:  W.  B.  Saunders  &  Co.,  1905.  Per  volume: 
Cloth,  $3  net;  half  morocco,  $3.75  net. 
In  the  present  volume  Dr.  Gould  has  the  co-operation  of  a  corps 
of  able  collaborators  who  have  summarized  the  researches  in 
the  different  departments  of  medicine  during  the  past  year.  Instead 
of  these  researches  being  disconnected  they  are  brought  into  rela- 
tion with  each  other  and  thus  furnish  excellent  reading.  The 
researches  are  brought  under  the  following  heads :  General  medi- 
cine ;  pediatrics ;  pathology  and  bacteriology ;  nervous  and  mental 
diseases  ;  cutaneous  diseases  and  syphilis  ;  materia  medica,  experi- 
mental therapeutics  and  pharmacology  ;  physiology  ;  legal  medicine  ; 
public  hygiene  and  preventive  medicine ;  and  physiologic  chemistry. 
Considering  the  excellence  of  the  work,  the  moderate  price  of  the 
book,  and  the  fact  that  much  of  the  matter  is  of  interest  to  biolo- 
gists, chemists,  analysts  and  lawyers,  as  well  as  members  of  the 
medical  profession,  it  ought  to  appeal  to  a  large  number. 
The  Elements  of  Chemistry.  By  M.  M.  Pattison  Muir.  Phila- 
delphia:  P.  Blakiston's  Son  &  Co.,  1904. 
The  object  of  this  work  is  to  prepare  the  reader  or  student  for 
research  work.  A  good  idea  of  the  character  of  the  work  may  be 
obtained  by  an  enumeration  of  the  subjects  treated:  (1)  Some  of 
the  marks  of  those  changes  the  elucidation  whereof  is  the  subject 
of  chemistry.  (2)  The  study  of  composition  ;  the  laws  of  chemical 
combination.  (3)  The  determination  of  the  combining  weights  of 
elements,  and  the  reacting  weights  of  compounds ;  chemical  sym- 
