49^  American  Pharmaceutical  Association.     { Yloctober,fi9^m" 
old  shall  be  cut  down.  About  10,000,000  pounds  of  camphor  are 
produced  annually  by  the  two  countries.  About  70  per  cent,  of  the 
camphor  produced  is  used  in  the  manufacture  of  celluloid.  The  B 
grade  of  camphor  contains  camphor  oil  and  water,  while  the  BB 
grade  is  of  fine  quality. 
Kefir  and  Its  Manufacture. 
By  I.  V.  S.  Stanislaus. 
The  author  stated  that  the  origin  of  kefir  grains  is  not  definitely 
known.  It  was  formerly  the  custom  not  to  sell  them,  because  there 
was  a  belief  that  the  remaining  grains  would  lose  their  fermentative 
properties.  He  said  that  kefir  is  not  like  koumiss  prepared  from 
mare's  milk  by  the  Tartars. 
Examination  of  Some  Samples  of  Hexamethylene-Tetramine. 
By  Daniel  Base. 
The  brands  examined  were  Aminoform,  Formin,  Cystogen,  Uro- 
tropin  and  Hexamethylene-tetramine.  With  one  exception,  all  were 
found  pure  and,  therefore,  equally  suited  for  medication. 
Opium  Assay  with  Use  of  Lead  Subacetate. 
By  C.  E.  Parker. 
A  modification  of  the  pharmacopceial  method  of  assay  was  given 
whereby  the  morphine  may  be  more  nearly  completely  precipitated 
and  in  a  suitable  condition  for  titration. 
A  Mechanical  Agitator  for  Drug  Assaying. 
By  C.  E.  Parker. 
A  simple,  compact  agitator  for  drug  assays,  with  a  modification 
for  producing  the  intermittent  agitation  required  in  the  official  pep. 
sin  assay,  was  described. 
[  To  be  continued.] 
