546      DEPORTMENT  OF  ALKALOIDS  WITH  REAGENTS,  ETC. 
action  of  nitric  acid  becomes  more  violent,  especially  more  oxid- 
izing, more  destructive,  forming  nitrogenized  bodies  more  easily ; 
indeed,  great  precautions  are  necessary  in  obtaining  nitrogenized 
derivatives  from  the  higher  hydrocarbides. 
Here,  then,  is  a  cause  of  loss,  and  of  the  formation  of  second- 
ary products.  In  a  mixture  of  benzol  with  other  oils  there  is  a 
risk  of  destroying  a  part  of  these  oils  or  of  leaving  part  of  the 
benzol  unattacked. 
Moreover,  is  toluol  a  perfect  homologue  of  benzol  ?  The  action 
of  chlorine  on  these  two  bodies  is  not  the  same ;  with  benzol  it 
produces  chlorides  without  eliminating  hydrogen ;  with  toluol  it 
produces  chlorinated  toluols,  the  chlorine  substituting  itself  for 
one  or  more  atoms  of  hydrogen. — Chemical  News,  August,  1866. 
To  be  continued. 
DEPORTMENT  OF  THE'  MOST  IMPORTANT  MEDICINAL 
ALKALOIDS  WITH  REAGENTS,  AND  A  SYSTEMATIC 
METHOD  OF  EFFECTING  THE  DETECTION  OF  THESE 
SUBSTANCES. 
(From  Prof.  C.  R.  Frezenius'  Manual  of  Qualitative  Analysis.) 
Note. — In  commencing  the  reprinting  of  the  article  on  the  deportment 
of  alkaloids,  at  page  447  of  our  September  number,  published  by  Prof.  A. 
Wadgymar,  of  St.  Louis,  in  the  Medical  Reporter  of  St.  Louis,  (April 
and  May,  '66),  we,  as  well  as  others,  believe  it  to  be,  as  it  purports  to  be, 
an  original  article,  properly  to  be  credited  to  Prof.  Wadgymar;  but  we 
find  that  it  is  almost  wholly  a  plagiarism  from  Dr.  C.  R.  Frezenius'  Manual 
of  Chemical  Analysis.  Compared  with  the  recent  American  edition  of 
Frezenius',  we  find  a  few  paragraphs  and  foot-notes  omitted,  due  probably 
to  the  use  of  the  7th  instead  of  the  11th,  or  latest  German  edition.  Prof. 
Wadgymar  also  omits  the  chapter  on  the  volatile  alkaloids,  which  may 
not  have  been  contained  in  the  earlier  edition  of  Frezenius.  Under  these 
circumstances  we  feel  best  satisfied  to  credit  the  continuation  of  the 
article  to  Prof.  C.  R.  Frezenius,  and  take  it  from  the  last  American 
Edition  of  Prof.  Johnson,  of  Yale. — Ed.  Amer.  Journ.  Pharm. 
Third  Group. — Non-volatile  alkaloids  which  are  precipitated 
by  potassa  from  the  solutions  of  their  salts,  and  do  not  redis- 
solve  to  a  perceptible  extent  in  an  excess  of  the  precipitant ; 
but  are  not  precipitated  from  (even  somewhat  concentrated) 
acid  solutions  by  the  bicarbonates  of  the  fixed  alkalies  ;  Strych- 
nia, Brucia,  Veratria. 
