326 
Book  Reviews. 
Am.  Tour.  Pharm. 
May,  1919. 
Dr.  John  Redman  Coxe,  a  noted  medical  practitioner,  succeeded 
Dr.  James  Woodhouse  as  professor  of  chemistry  in  the  University 
of  Pennsylvania. 
The  disputative  Thomas  Cooper,  a  naturalized  citizen  of  Eng- 
lish birth  and  education.,  dabbling  alike  in  politics,  law  and  chem- 
istry he  served  for  a  time  as  a  district  judge  and  as  professor  of 
chemistry  in  Dickinson  College  and  later  as  the  holder  of  the  chair 
of  chemistry  and  mineralogy  in  the  University  of  Pennsylvania 
which  he  resigned  and  took  up  a  professorship  in  a  southern  college. 
Gerard  Troost,  a  scholar  said  to  have  possessed  a  lovable  per- 
sonality; doctor  of  medicine  and  master  of  pharmacy  by  reason  of 
education  in  European  universities.  He  was  noted  for  his  pro- 
found knowledge  and  for  his  genius  as  an  organizer  and  teacher. 
As  one  of  the  founders  of  the  Academy  of  Xatural  Sciences  of 
Philadelphia,  he  served  as  its  first  president  and  guiding  spirit  for  a 
number  of  years.  He  was  the  first  professor  of  chemistry  in  the 
Philadelphia  College  of  Pharmacy.  He  specialized  in  the  stud}-  of 
mineralogy  and  geology.  In  1828,  he  left  Philadelphia,  to  assume 
the  professorship  of  chemistry  in  the  University  of  Nashville  and 
thereafter  assiduously  devoted  himself  to  the  study  of  his  favorite 
branches.  His  published  work  in  geology  is  considered  authorita- 
tive and  his  life  work  is  highly  rated. 
Professor  William  H.  Keating,  of  the  University  of  Pennsyl- 
vania, was  another  mineralogic  chemist  of  high  scentific  attainment 
and  interested  greatly  in  the  larger  public  affairs  of  his  time. 
Joseph  Cloud  smelter  at  the  U.  S.  Mint  whose  work  was  largely 
concerned  with  the  noble  metals  and  the  problems  associated  with 
the  fusing  points  of  metals  and  alloys. 
The  last  name  considered  with  the  older  chemists  of  Philadelphia 
is  that  of  Professor  Robert  Hare.  His  contributions  to  chemical 
and  physical  sciences  were  not  excelled  by  any  of  his  predecessors 
mentioned  and  have  scarcely  been  outclassed  by  any  one  whose  name 
has  yet  been  associated  with  the  development  of  these  branches  of 
science.  To  him  are  we  indebted  for  the  compound  blowpipe,  the 
oxy-hydrogen  flame,  the  first  electric  furnace,  artificial  graphite, 
calcium  carbide,  the  mercury  cathode  and  the  rock  blasting  device. 
Many  of  these  discoveries  and  inventions  are  even  now  in  daily 
application  in  some  of  our  most  important  industries. 
The  pen  pictures  of  the  author  show  that  these  men  were  not 
only  influential  in  the  development  of  chemistry  but  that  they  were 
