Am"ju°i"'i9oh3arm'}       Investigations  of  the  Tannins.  341 
of  the  various  State  Associations  and  whoever  else  that  have  an 
interest  in  pharmacy  and  wish  to  express  it. 
The  Maryland  Pharmaceutical  Association  is  already  on  record  as 
favoring  the  monument  and  I  feel  that  the  other  associations  will  be 
glad  to  act  in  harmony,  and  by  this  united  and  national  action, 
comparatively  small  contributions  will  not  only  suffice,  but  each 
subscriber  will  feel  his  personal  interest. 
This  would  be  a  substantial  and  lasting  recognition  of  the  Father 
of  American  Pharmacy,  which  could  not  have  been  expected  from 
the  recommendations  of  the  Procter  Memorial  Committee,  and  its 
fulfilment  will  redound  to  the  glory  of  the  American  pharmacists — 
who  will  erect  this  memorial — apart  from  any  particular  association 
or  associations. 
Baltimore,  June  12,  1903. 
SOME  OF  THE  UNPUBLISHED  RESULTS  OF  THE  IN- 
VESTIGATIONS OF  THE  TANNINS  BY  THE  LATE 
PROFESSOR  HENRY  TRIMBLE. 
By  W.  B.  Ridknour. 
The  work  herewith  recorded  was  carried  on  during  the  years 
1894-95  under  the  direction  ot  Professor  Trimble. 
The  hide-powder  method  of  estimating  the  tannin  was  used 
exclusively. 
pinace^e. 
Tsuga  Canadensis. — The  materials  for  this  work  were  collected 
at  Wissahickon,  Pa. 
Part. 
Date  of 
Collection. 
Moisture. 
Ash  on 
Dry  Basis. 
Tannin  on 
Dry  Basis. 
Remat  ks. 
Whole  bark  . 
May  28,  "94. 
4578 
i'-5  * 
774 
Tree  about  30  ft.  high. 
4272 
r46 
5*46 
July  18,  '94. 
12-30 
2-15 
14-00 
Inner  " 
Aug.  16. 
48-51 
322 
13*30 
Whole  " 
8  63 
1-83 
19"93 
Sept.  16. 
8-87 
2-86 
n-66 
Very  hard  to  peel. 
Oct.  16. 
10-52 
3-11 
"75 
Dec.  22. 
31-92 
2-17 
1042 
Inner  " 
Feb.  23,  '95. 
32  55 
265 
9'56 
Sap  beginning  to  flow. 
Whole  " 
March  30. 
383t 
i'93 
10-25 
Highland,  Pa. 
