54 
Reviews,  etc. 
Am.  Jour.  Phami. 
Jan.,  1884. 
and  most  important  facts  accepted  in  the  present  state  of  chemical  knowl- 
edge. Aside  from  what  has  been  modified,  rewritten  or  added,  a  rearrange- 
ment of  the  material  has  been  deemed  advisable,  so  that  the  book  differs 
in  some  respects  from  its  predecessors.  These  having  been  reviewed 
in  former  volumes  of  the  4<  Journal,"  it  is  not  deemed  necessary  to  enter 
into  its  special  features,  which  as  stated  before  remain  unaltered  ;  nor  can 
we  attempt  to  point  out  the  new  matter  added,  which  is  in  keeping  with 
the  original  design  of  the  work  so  well  preserved  by  Mr.  Watts  in  previous 
editions.  We  must  content  ourselves  with  stating  the  main  features  of  the 
rearrangement  of  the  subject-matter,  which  is  nearly  identical  with  that  of 
Roscoe  and  Schorlemmer. 
To  the  introductory  part  have  been  added  brief  sketches  of  the  most 
important  elementary  bodies  for  the  purpose  of  introducing  here  also  the 
general  laws  of  chemical  combination,  comprising  nomenclature  and  nota- 
tion, the  laws  of  multiples  and  of  equivalents,  and  equations. 
The  lion- metallic  elements  are  now  considered  in  the  following  order  : 
Beginning  with  hydrogen  and  with  the  four  halogens,  oxygen  is  next 
treated  of,  with  the  general  conditions  of  combustion  and  the  oxygen  com- 
pounds of  the  preceding  elements.  Then  follow  sulphur,  selenium,  tellu- 
rium, nitrogen, 'phosphorus,  arsenic,  boron,  silicon  and  carbon.  The  general 
laws  of  chemical  combination  are  now  considered  more  in  detail,  as  they 
formerly  were  at  the  end  of  the  non-metallic  elements. 
After  a  general  characteristic  of  the  metals  and  their  compounds,  these 
elements  are  then  grouped  together  in  the  following  manner:  Alkali  group 
consisting  of  potassium,  sodium,  lithium,  caesium,  rubidium,  and  ammo- 
nium ;  group  of  the  alkaline  earths,  calcium,  strontium  and  barium  ;  mag- 
nesium group,  containing  also  beryllium,  zinc  and  cadmium;  lead  group 
with  thallium  ;  copper  group  with  silver  and  mercury  ;  yttrium  group  with 
cerium  and  eight  other  rare  metals ;  aluminium  group  with  indium  and 
gallium;  iron  group  with  manganese,  cobalt  and  nickel;  chromium  group 
with  molybdenum,  tungsten  and  uranium  ;  tin  group  with  titanium,  zirco- 
nium and  thorium;  antimony  group  with  vanadium,  bismuth,  tantalum 
and  niobium;  and  platinum  group  comprising  gold  and  the  metals  known 
as  platinum-metals. 
The  appendix  contains  the  tables  of  former  editions.  The  text  is  illus- 
trated with  150  well  executed  wood-cuts  and  spectral  analysis  is  explained 
by  means  of  a  colored  plate. 
A  Treatise  on  Pharmacy,  designed  as  a  Text-book  for  the  Student  and  as  a 
Guide  for  the  Physician  and  Pharmacist,  containing  the  Officinal  and 
many  Unomcinal  Formulas  and  numerous  Examples  of  Extemporaneous 
Prescriptions.  By  Edward  Parrish,  late  Professor  in  the  Philadelphia 
College  of  Pharmacy,  etc.  Fifth  edition,  enlarged  and  thoroughly  revised. 
Bv  Thos.  S.  Wiegand,  Graduate  of  the  Philadelphia  College  of  Pharmacy. 
With  256  illustrations.  Philadelphia:  Henry  C.  Lea's  Son  &  Co.,  1884. 
8vo,  pp.  1090. 
This  well-known  work  presents  itself  now  based  upon  the  recently  revised 
new  Pharmacopoeia.  Though  the  general  character  of  the  former  editions 
has  been  preserved,  several  important  modifications  of  the  internal  arrange- 
ment have  been  made,  and  we  believe  they  will  mostly  be  found  to  increase 
the  practical  usefulness  of  the  book. 
