444  The  Detection  of  Emo  din-Bearing  Drugs.  \Am^J-J^m- 
The  methods  for  assaying  the  drugs  reported  in  this  paper  are 
essentially  the  same  as  previously  given. 
For  further  particulars  the  reader  is  referred  to  the  first  paper 
appearing  in  the  October,  191 2,  number  of  this  Journal. 
The  results  of  the  assays  are  given  in  the  table  on  pp.  436-443. 
Abbreviations,  etc. :  Wi. — Whole  drug ;  P. — Powdered  drug ;  G. — 
Ground  drug.  Where  the  alcoholic  menstruum  used  in  determining 
the  anhydrous  alcohol  extract  was  of  a  percentage  other  than  95  oer 
cent,  absolute  alcohol,  the  percentage  is  indicated  by  the  figure  in 
brackets;  for  example,  20.3  (49),  32.6  (63)  indicating  49  and  63  per 
cent,  absolute  alcohol,  respectively. 
Agar- Agar — Four  samples  contained  ash  8.23,  4.8,  4.5  and  4.4 
per  cent,  respectively. 
Gambir — Fifteen  samples  :  Alcohol  Extract — Minimum  63.30  per 
cent.,  maximum  87.00  per  cent.,  average  78.6  per  cent.  Aqueous 
Extract — Minimum  61.7  per  cent.,  maximum  82.75  per  cent.,  average 
77.95  per  cent.  Ash — Minimum  3.40  per  cent.,  maximum  8.48  per 
cent.,  average  5.55  per  cent. 
Ipecac — Eight  samples:  Ash  minimum  3.40  per  cent.,  maximum 
4.63  per  cent.,  average  4.10  per  cent. 
Jalap — Seven  samples  :  Ash  minimum  0.62  per  cent.,  maximum 
1.77  per  cent.,  average  1.29  per  cent. 
Lyco  podium — One  sample  contained  8.61  per  cent,  ash,  which  was 
chiefly  calcium  carbonate. 
Salep — One  sample  ash  2.24  per  cent. 
Taraxacum — One  sample  submitted  consisted  of  approximately 
50  per  cent,  chicory. 
Analytical  Department, 
Schieffelin  &  Co.,  New  York. 
THE  DETECTION  OF  EMODIN-BEARING  DRUGS  IN  PRES- 
ENCE OF  PHENOLPHTHALEIN. 
By  L.  E.  Warren. 
Phenolphthalein,  either  alone  or  in  mixture  with  other  drugs,  is 
a  constituent  of  a  number  of  nostrums  which  are  sold  as  laxatives. 
The  separation  and  identification  of  phenolphthalein  in  medicines  is 
usually  accomplished  readily,  but  its  presence  may  interfere  with  the 
