ii4  Ash  Content  of '  Some  Unofficial  Drugs.  jAmjraJr°cuhr- 1$*™' 
Bryonia  :  Ash,  per  cent. 
A.  Clean  commercial  sample                                            6.49  6.17 
B.  Commercial  sample  powdered  Bryonia                        12.51  12.63 
(This  sample,  upon  microscopic  examination,  showed 
numerous  stone  cells  and  other  tissue  not  found  in 
true  Bryonia.) 
Castanea : 
Clean  commercial  sample                                                  3.927  3-958 
Coptis :                                                                           (  , 
X<                    ■  1          1                                             f  5-07  5.o6 
Clean  commercial  sample  . ,  ■{ 
\  4-28  4-91 
Convallaria  flowers : 
Clean  commercial  sample,  with  few  flower  stalks....    9.68  9.39 
(Ash  of  a  bluish-green  color.) 
Damiana : 
Clean  commercial  sample                                                 7.40  7.21 
Dioscorea : 
Clean  commercial  sample                                                 3.00  3.078 
Iris  versicolor : 
A.  Commercial  sample  powdered  in  our  laboratory....    3.03  3.4 
B.  Sample  consisting  of  the  roots  alone,  from  plants 
grown  in  the  Medicinal  Plant  Garden                          6.00  5.80 
C.  Sample  consisting  of  the  rhizomes  alone  from  plants 
grown  in  Medicinal  Plant  Garden                               4.77  4.28 
Juglans : 
Clean  commercial  sample  of  root  bark                             7.702  7.396 
Menyanthes : 
Commercial  sample                                                          9.56  9.46 
Myrica : 
Clean  commercial  sample                                                 3.04  2.86 
Euphorbia : 
Select  commercial  sample  .  . . ."                                        5.76  5.73 
Turkey  Corn  Root : 
Commercial  sample  of  average  cleanliness                         4.37  4.528 
Chionanthus : 
Select  commercial  sample   J  ^-57 
{  3-8o  3.50 
Fraxinus,  White  Ash  Bark: 
Select  commercial  sample    3.82        .  3.59 
Centaury  Herb,  European : 
Clean  commercial  sample                                                   4.42  4.51 
Cocillana : 
Commercial  sample  of  the  powder                                     7.46  7.32 
,     Para  Coto : 
Select  sample  from  Bolivia                                               1.121  1.106 
Pulsatilla: 
Clean   commercial   sample   5.99  5.59 
