A^ptember,hi™' }    American  Pharmaceutical  Association.  479 
Gravimetric.  Volumetric. 
Brazil  wood   0*96  0-87 
Cochineal   0*92  0887 
Haematoxylon   0*97  0*893 
Average   0*95  0*883 
The  differences  here  amounted  to  :  gravimetric,  0/079  per  cent.;  volumetric,  0*069  Per  cent. 
These  variations  appeared  too  great,  so  it  was  decided  to  do  the  work  in  a  reverse  manner, 
that  is,  Professor  L/loyd  apply  less  agitation  and  Mr.  Kebler  more.  Professor  Iyloyd,  by  reduc- 
ing his  shaking  to  three-quarters  of  an  hour,  and  Mr.  Kebler  by  agitating  two  hours  con- 
tinuously, with  the  same  coca  leaf,  obtained  somewhat  different  results  : 
I,loyd.  Kebler. 
Gravimetric.      Volumetric.  Gravimetric.  Volumetric. 
Brazilwood   1*034  °"95°  1-02  Q'91 
Cochineal   1*004  0*939  0*99  0*89 
Haematoxylon  ....        o  976  °'934  I,03  0*94 
Average   1*005  °'94i  i'oi  0*91 
On  comparing  these  results  with  those  obtained  above,  we  come  to  the  conclusion  that  time 
of  agitation  does  seem  to  increase  the  percentage  of  yield,  to  some  extent,  and  this  fact 
should  be  borne  in  mind  when  parallel  assays  are  made.  While  the  above  data  are  not  in 
complete  accord,  yet  they  approximate  one  another  as  closely  as  can  be  expected  for  this 
character  of  work,  and  are  considered  quite  satisfactory  by  the  workers. 
IvYman  F.  Kebler,  Chairman. 
The  report  was  received  and  ordered  to  take  the  usual  course. 
The  reading  of  the  report  of  the  Committee  on  Research  was  deferred  till  the 
evening  session,  as  was  also  the  report  of  the  Committee  on  the  Revision  of  the 
United  States  Pharmacopoeia. 
The  next  business  was  the  nomination  of  the  officers  for  the  Section  during 
the  coming  year.  Messrs.  Kremers  and  Alpers  were  put  in  nomination  for 
Chairman,  and  Mr.  Kaufmann  for  Secretary. 
The  reading  of  certain  papers  presented  by  members  in  attendance  were  car- 
ried over  to  the  evening  session,  so  as  to  allow  discussion  on  the  subjects  by  a 
larger  audience.    The  following  papers  were  then  read  by  title  : 
STANDARDS  FOR  LINSEED  AND  WHITE  AND  BLACK  MUSTARD 
SEEDS. 
By  J.  U.  Lloyd, 
COMPARATIVE  STRUCTURE  OF  HYOSCYAMUS,  BELLADONNA  AND 
STRAMONIUM  LEAVES. 
By  J.  O.  Schlotterbeck:. 
EXAMINATION  OF  POWDERED  VEGETABLE  DRUGS. 
By  Henry  Kraemer. 
SULPHUR  PRECIPITATUM. 
By  T.  D.  Reed. 
IS  GLUCOSE  OR  GRAPE  SUGAR  OF  ANY  VALUE  AS  A  PRESERVA- 
TIVE IN  SYRUP  OF  HYDRIODIC  ACID  AND  SYRUP  OF 
FERROUS  IODIDE? 
By  David  Walker. 
GELSEMIC  ACID. 
By  Virgil  Coblentz. 
This  paper  is  printed  in  full  on  page  439. 
