508  Acidimetric  Estimation  of  Alkaloids.  {A^iober,PiSm* 
taining  considerable  non-alkaloidal  matter,  and  hopes  that  the  day- 
is  not  far  distant  when  all  gravimetric  results  will  at  least  be  supple- 
mented by  volumetric  methods  if  not  displaced  by  them. 
LITERATURE  ON  THE  ACIDIMETRIC  ESTIMATION  OF  ALKALOIDS. 
1  1846,  M.  G.  Schossing,  Comp.  rend.,  23,  1142;  1847,  Ann.  de  Chim.  et  de 
Phys.  (3),  19,  230;  Am.  J.  Pharm.,  19,  68  ;  Chem.  Gaz.,  5,  41. 
2  1862,  Wittstein,  Vierteljahresschr.  f.  prakt.  Pharm.,  11,  35". 
3  1864,  F.  M.  Brandl,  Vierteljahresschr.  f.  prakt.  Pharm.,  13,  322. 
4 1865,  Liecke,  Mittheilungen  des  hannov.  Gew.-Ver.,  page  160;  Ding.  poly. 
J.,  178,  235  ;  Polyt.  Notizbl.,  No  20  ;  Zeit.  anal.  Chem.  4,  492. 
5 1873,  Kosutany,  Anal.  Bestim.  einiger  Besta:dth.  d.  Tabakspflanze.  Diss. 
Altenburg,  Hungary. 
6 1874,  O.  Dragendorff,  Chem.  Werthbestim.,  pages  42  and  55.  See  also  Plant 
Analysis,  1884,  Eng.  Ed.,  pages  63  and  188. 
7  1879,  Iv-  van  Itallie,  Nederland.  Tydschr.  v.  Pharm.,  January;  Analyst, 
14,  118. 
8 1882  and  1884,  A.  W.  Gerrard,  Year-Book  of  Pharm.,  pages  400  and  447 
respectively. 
1885,  E.  Leger,  J.  de  Pharm.  et  de  Chimie  (5),  11,  425. 
9 1886,  O.  Schweissinger,  Pharm.  Centralhalle,  27,  492. 
1887,  H.  J.  Pfeiffer,  Chem.  Ztg.,  11,  783  and  818  ;  J.  Soc.  Chem.  Ind.,  6,  561. 
10 1887,  E.  Dieterich,  Pharm.  J.  Trans.,  17,  888  ;  Pharm.  Centralhalle,  38,  21  ; 
Am.  J.  Pharm.,  59,  179. 
11 1887,  P.  C.  Plugge,  Arch.  d.  Pharm.  (3),  25,  45  and  49;  Ber.,  20,  148; 
J.  de  Pharm.  et  de  Chim.  (5),  15,  571  ;  J.  Chem.  Soc,  52  621. 
1890,  O.  Schweissinger  and  G.  Sarnow,  Pharm.  Centralhalle,  31,  771;  Am.  J. 
Pharm.,  63,  96. 
1891,  O.  Schweissinger,  Pharm.  Centralhalle,  32,  583. 
1891,  A.  H.  Allen,  Pharm.  J.  Trans.  (3),  22,  752  and  772  ;  Analyst,  17,  186 
and  215. 
1891,  H.  Beckurts,  Apotheker  Ztg.,  6,  537  i  Am.  J.  Pharm.,  64,  25. 
1892,  A.  H.  Allen,  Chem.  News,  66,  259. 
1892,  L.  Barthe,  Comp.  rend.,  115,  512;  Chem.  News,  6  6,  223;  Am.  J. 
Pharm.,  64,  638. 
1892,  L.  Barthe,  Comp.  rend.,  115,  1085. 
12 1892,  C.  C.  Keller,  Schweiz.  Wochenschr.  f.  Chem.  u.  Pharm  ,  30,501  and 
509  ;  Am.  J.  Pharm.,  65,  78. 
1892,  L.  Harsten,  Comp.  rend.,  115,  629. 
1892,  E.  Leger,  Comp.  rend.,  115,  732. 
12 1893,  C.  C.  Keller,  Zeit.  Oesterreich.  Apotheker,  47,  563  and  586  ;  Am.  J. 
Pharm.,  66,  42. 
12 1893,  C.  C.  Keller,  Schweiz.  Wochenschr.  f.  Chem.  u.  Pharm.,  31,  473- 
1893,  D.  Vitali,  L'Orosi  di  Chimica,  Pharm.,  etc.,  16,  181  ;  J.  Chem.  Soc, 
64,  606. 
1893,  C.  Caspari  and  A.  R.  L.  Dohme,  Am.  J.  Pharm.,  65,  473  ;  Proceed.  Am. 
Pharm.  Assoc.,  41,  118. 
1893,  K.  Schwickerath,  Bull.  Pharm.,  7,  534. 
