43^ 
Progress  in  Pharmacy. 
fAm.  Jour.  fhariiL 
\  September,  1910. 
the  custom  is  to  gather  over  ground  portions  of  such  small  procum- 
bent plants  and  not  expend  the  labor  necessary  to  strip  leaves  only. 
These  two  samples  of  oil  exhibit  some  distinct  differences.  The 
sample  from  Kraemer's  distillation  is  almost  water  white  and  has 
remained  so  for  a  year.  It  has  a  much  lighter,  more  ethereal  odor 
while  that  from  my  own  experiment  has  gradually  darkened  and 
assumed  a  pale  amber  tint  and  has  a  much  heavier  odor :  both  color 
and  odor  more  closely  resembling  that  of  the  distilled  oil  commonly 
appearing  in  commerce. 
The  specific  gravity  and  optical  rotation  of  these  oils  is  as 
follows : 
Sp.  Gr.  Optical  Rotation. 
Kraemer's   1-17^5  — 0.260 
Beringer's   1.177  —1-335° 
While  there  is  scarcely  any  difference  in  the  specific  gravity  of 
the  samples  there  is  marked  difference  in  the  lsevo- rotatory  power. 
In  this  connection  the  U.  S.  Pharmacopoeia  states  that  oil  of  gaul- 
theria  is  kevo-gyrate  up  to  — 1°  in  a  100  mm.  tube,  at  250  C.  If 
the  oil  from  the  entire  plant  is  to  be  officially  recognized  then  the 
writer's  experiment  demonstrates  that  this'  limitation  must  be 
somewhat  extended. 
PROGRESS  IN  PHARMACY. 
By  M.  I.  Wilbert,  Washington,  D.  C. 
A  QUARTERLY  REVIEW  OF  SOME  OF  THE  MORE  INTERESTING  LITER- 
ATURE RELATING  TO  PHARMACY  AND   MATERIA  MEDIC  A. 
The  meetings  of  state  and  national  associations,  both  medical 
as  well  as  pharmaceutical,  that  have  been  held  during  the  past 
three  months  are  destined  to  have  a  very  far-reaching  influence 
on  the  future  development  of  pharmacy. 
The  proceedings  of  the  several  state  pharmaceutical  associations 
have  been  reported  at  length  in  the  several  trade  journals  and 
from  the  published  reports  it  would  appear  that  the  meetings  were 
unusually  well  attended  and  that  considerable  time  was  devoted 
to  the  discussion  of  scientific  papers  and  subjects. 
As  usual  the  proceedings  of  the  Missouri  Pharmaceutical  Asso- 
