AmMSch,i9hof.rm'}    Reviews  and  Bibliographical  Notices.  139 
Thermo-chemical  changes  are  discussed  in  a  separate  chapter  and 
endothermic  and  exothermic  reactions  illustrated,  the  methods  of 
calorimetric  measurement  of  chemical  changes  being  also  described. 
An  account  of  luminous  radiations  includes  the  subjects  of  photo- 
metry and  spectroscopy,  as  well  as  a  description  of  the  newer  forms 
of  radiation,  such  as  the  Roentgen  rays,  the  N  rays  and  the  phe- 
nomena of  radio-active  matter,  in  connection  with  which  Crookes' 
interesting  speculations  on  the  changeable  nature  of  matter  are 
noted.  The  newest  results  of  Ramsay  and  Rutherford  are  not 
mentioned,  however. 
No  book  on  modern  physical  chemistry  would  be  complete  with- 
out an  account  ot  Gibbs'  famous  phase  rule  and  the  various  systems 
of  equilibrium  in  chemical  reaction,  and  this  we  find  well  explained 
in  Chapter  XV.  A  discussion  on  electrolytic  phenomena  which 
develops  the  idea  of  the  ion,  and  a  final  chapter  on  the  application 
of  the  theory  of  the  ions  and  the  scientific  principles  underlying 
analytical  chemistry,  complete  the  book. 
No  one  wishing  to  master  the  principles  of  chemistry  and  its 
wide-reaching  possibilities  can  any  longer  ignore  the  great  develop- 
ment of  physical  chemistry  which  has  taken  place  in  the  last  decade 
or  two,  and  for  one  able  to  follow  in  the  French  language  the  book 
seems  to  furnish  an  excellent  and  not  too  mathematical  survey  of 
the  field.  S.  P.  Sadtler. 
In  Memoriam  Charles  Rice.  Printed  for  private  circulation  by 
J.  B.  Lippincott  Co.,  Philadelphia,  1904. 
This  is  a  neat  octavo  volume  of  sixty  pages,  with  seven  inserts 
containing  appropriate  and  well  executed  illustrations.  Bound  in 
full  black  leather,  with  gold  lettering,  this  little  volume  represents 
probably  the  acme  of  the  printer's  and  bookbinder's  art.  In  style 
and  appearance  it  is  thoroughly  in  harmony  with  the  man  whose 
name  it  is  designed  to  perpetuate  and  to  honor. 
The  first  nineteen  pages  are  devoted  to  a  general  outline  sketch 
of  the  life  of  Charles  Rice,  while  the  remaining  pages  contain  a  list 
of  the  "Degrees,  Titles  and  Memberships  of  Dr.  Charles  Rice;" 
"  A  Bibliography  of  the  writings  of  Dr.  Charles  Rice ;"  "  Personal 
impressions  and  recollections  of  Dr.  Charles  Rice  ;"  "  Resolutions 
of  the  Board  of  Trustees  of  the  United  States  Pharmacopceial  Con- 
vention ;"  "  Resolutions  of  the  College  of  Pharmacy  of  the  City  of 
