4m-ocTi8P92arm'}  Reviews.  549 
forensic  medicine,  is  obviously  familiar  with  the  wants  of  medical  students. 
The  book  is  divided  into  four  parts,  viz  :  introduction,  comprising  chemical 
physics  and  theoretical  chemistry  ;  non-metallic  elements  ;  metallic  elements, 
and  organic  chemistry  ;  and  an  appendix  has  been  added  as  Part  V,  containing 
instructions  in  the  calculation  of  chemical  problems,  and  an  outline  of  qualita- 
tive analysis.  As  may  be  judged  frorn  the  size  of  the  volume,  it  can  give  only 
the  mere  outlines  of  chemistry  ;  but  these,  as  a  rule,  are  well  presented.  The 
rare  elements  are  omitted,  they  being  of  no  medicinal  importance,  but  cadmium, 
we  think,  should  have  deserved  recognition,  since  a  few  compounds  have  been, 
and  to  some  extent  are  s*till,  employed  as  remedies.  In  a  few  cases  vague  or 
partly  incorrect  statements  have  been  observed  ;  thus,  p.  412,  it  is  said  that  all 
the  chloroform  of  commerce  is  prepared  by  the  decomposition  of  chloral ;  on 
p.  465,  the  purgative  principle  of  jalap  is  called  jalapin,  while  chemists  have 
named  it  convolvulin,  and  to  avoid  the  existing  confusion,  the  name  jalapurgin 
has  been  more  recently  recommended  for  it ;  on  p.  469,  chrysophanic  acid  is 
asserted  to  be  also  known  as  pure  chrysarobin  and  to  be  a  constituent  of 
araroba  and  rhubarb  root.  We  regard  the  book  as  well  adapted  for  aiding  the 
medical  student  in  the  acquisition  of  a  sound  knowledge  of  the  fundamental 
principles  of  chemistry,  and  consider  the  introductory  chapters  more  espe- 
cially as  presenting  the  theories  of  composition  and  combination  in  a  satis- 
factory manner  for  this  purpose. 
Education  of  Business  Men. — Published  by  American  Bankers'  Association. 
New  York.  1892. 
Two  pamphlets,  covering  together  55  closely  printed  pages  and  containing 
an  address  by  Prof.  E.  J.  James,  of  the  University  of  Pennsylvania,  together 
with  various  reports,  letters,  etc.,  refer  to  the  founding  of  schools  of  finance 
and  economy. 
The  Twentieth  Annual  Report  of  the  Zoological  Society  of  Philadelphia. 
1892.    Pp.  21. 
An  appendix  to  the  report  contains  lists  of  animals  bred  in  the  zoological 
garden  during  the  past  year,  and  of  acquisitions  by  purchase,  exchange  and 
presentation.  The  total  number  of  animals  composing  the  collection,  Feb- 
ruary 29  last,  was  1,001,  valued  at  147,567.  The  Society  was  incorporated 
March  21,  1859. 
The  Wills  Eye  Hospital.  Report  for  the  year  ended  December  31,  18910 
8vo.    Pp.  25. 
The  total  number  of  patients  treated  at  the  clinics  during  1891  was  12,280, 
and  the  number  of  operations  performed  2,763.  The  Hospital  was  founded 
April  2,  1832. 
The  Principles  of  Theoretical  Chemistry,  with  special  reference  to  the  con- 
stitution of  chemical  compounds.  By  Ira  Remsen,  Professor  of  Chemistry  in 
the  Johns  Hopkins  University.  Fourth  edition,  thoroughly  revised.  Phila- 
delphia :  Lea  Brothers  &  Co.    i2tno.    Pp.  322.    Price,  cloth,  $2.00. 
We  are  much  pleased  to  note  the  appearance  of  a  new  edition  of  this  work 
which,  upon  its  first  appearance,  supplied  a  want  that  had  been  seriously  felt, 
and  which,  we  believe,  has  exerted  a  very  gratifying  influence  in  promoting  the 
study  of  chemical  philosophy.    The  intrinsic  value  of  the  work  has  also  been 
