Am.  Jour.  PharnO 
February,  1896.  J 
North  American  Conifer  ce. 
73 
CHEMICAL  COMPOSITION. 
For  the  purposes  of  this  investigation,  a  tree  of  Pinus  Austriaca, 
about  6  feet  in  height,  was  taken  from  a  nursery  near  Philadelphia, 
in  November.  As  is  well  known,  the  oleoresin  is  an  important  con- 
stituent of  this  tree,  but  no  investigation  of  that  substance  was 
made.    Mucilage  was  found  to  be  present  in  moderate  proportion. 
Fig.  /j,  starch  from  the  root  of  P.  Austriaca.  The  grains  are  smaller,  more 
distinctly  marked,  and  more  commonly  compound  than  in  P.  rigida. 
The  tannin,  moisture  and  ash  were  estimated  in  the  several  parts 
of  the  tree,  with  the  following  percentage  results : 
Moisture. 
Ash  in  abso- 
lutely dry 
state. 
Tannin  in 
air-dry  state. 
Tannin  in 
absolutely 
dry  state. 
670 
3 '05 
3*56 
3-86 
7-25 
2'iy 
I3:58 
14-64 
5  '96 
s  273 
11*12 
11-82 
