624 
Reviews,  etc. 
J  Am.  Jour.  Pharm. 
"j       Dec,  1879. 
heat  of  the  same  bodies.  This  leads  to  the  quantivalence  of  the  elements,  deduced 
either  from  the  nature  of  their  simple  compounds  capable  of  existing  in  the  gaseous- 
state,  or  from  the  behavior  of  their  compouuds  with  other  elements.  These  con- 
siderations form  the  basis  for  the  second  pait,  which  treats  of  "chemical  constitu- 
tion," and  elaborates  more  especially  the  theories,  which  are  at  present  received  as- 
correct.  The  object  of  giving  a  concise  but  comprehensive  outline  of  the  views 
entertained,  together  with  the  requisite  proofs,  is  not  overlooked  ;  but  in  its  eluci- 
dation a  more  detailed  account  of  various  compounds  and  classes  of  compounds- 
has  very  properly  been  deemed  advisable. 
The  third  part,  "  chemical  reactions, V  is  equally  comprehensive  in  treating  of  the 
decomposition  or  gaseous,  liquid  and  solid  compounds,  followed  by  the  thermo- 
chemical  confirmation  of  the  correctness  of  the  processes  generally  adopttd  for  the 
separation  of  the  metals  in  groups  by  sulphuretted  hydrogen. 
We  regard  the  work  as  a  very  excellent  one  for  the  use  of  students  of  chemistry  j 
it  gives  the  theories  at  present  recognized  in  this  science,  and  it  furnishes  the  proofs 
for  the  correctness  of  these  views  according  to  the  most  elaborate  investigations 
based  upon  our  knowledge  of  natural  laws. 
Ueber  die  Beziehungen  zwoischen  chemischen  Eestandtheilen  und  Botanischen  Eigen- 
thumlichkeiten  der  Pjianzen.    Von  G.  DragendorfF.     8vo,  pp.  48. 
On  the  relations  between  the  chemical  constituents  and  botanical  characteristics  of 
plants. 
The  subject  of  this  essay  is  similar  to  that  treated  by  Professor  Herlandt,  of 
whose  essay  we  published  a  condensed  account  in  our  last  volume,  pages  520  to  536. 
But  while  the  latter  treated  this  matter  chiefly  from  a  pharmacological  standpoint, 
Prof.  DragendorfF  examines  it  from  a  general  botanical,  more  especially  from  a 
phyto-chemical  view.  The  author's  essay  is  based  upon  a  lecture  delivered  on  this 
subject  at  Dorpat  in  December,  1876,  and  comprises  a  general  review  of  what  is 
known  of  the  most  important  constituents  of  the  various  natural  orders  and  tribes 
of  plants  5  it  is  on  that  account  not  adapted  for  making  an  abstract  j  but  we  take 
pleasure  in  directing  the  attention  of  our  readers  who  are  interested  in  the  subject 
to  this  paper,  which  was  published  in  full  in  the  Russian  "  Pharmaceutical  Journal  " 
(St.  Petersburg)  for  1879. 
Tobacco  Poisoning  and  its  Effects  upon  the  Eye-sight.     By.  C.W.Calhoun,  M.  D. 
Atlanta,  Ga.    pp.  8. 
A  reprint  from  the  Transactions  of  the  Medical  Association  of  Georgia. 
The  Physicians  Visiting  List  for  1880.    Philadelphia:    Lindsay  &  Blakiston. 
This  annual  has  reached  the  twenty-ninth  year  of  its  publication,  which  proves 
its  usefulness  to  those  for  whom  it  is  intended.  In  addition  to  the  general  informa- 
tion embraced  in  the  preliminary  pages,  the  present  issue  contains  a  valuable  and 
very  practical  contribution  on  the  decimal  system  from  the  pen  of  Prof.  Oscar 
Oldberg. 
