AlAi?S,?906mi'}    Pennsylvania  Pharmaceutical  Association.  379 
hydroxide  in  one  pint  of  warm  water,  then  dissolve  the  thymol, 
which  should  be  very  finely  powdered  in  this  solution,  then  dissolve 
the  potassium  iodide  in  one  pint  of  water,  and  dissolve  the  iodine  in 
this  solution  which  may  be  called  Number  2.  Combine  these  two 
solutions  by  mixing  with  constant  stirring,  and  allow  the  mixture 
to  stand  for  a  time.  Add  one  pound  of  chlorinated  lime  to  two 
gallons  of  water,  and  pass  chlorine  gas  into  the  solution  for  a  few 
minutes.  Place  this  solution  in  a  five-gallon  earthen  vessel,  and  add 
the  combined  solutions  previously  referred  to,  mixing  well  by  con- 
stant stirring.  In  a  few  minutes  a  copious  reddish  brown  precipi- 
tate will  form,  which  should  be  allowed  to  completely  settle,  then 
wash  with  large  quantities  of  water  acidulated  with  hydrochloric 
acid,  using  six  ounces  of  acid  to  the  gallon  of  water.  This  frees  the 
precipitate  from  excess  of  lime  and  alkalies.  Follow  this  treatment 
by  washing  thoroughly  with  pure  water  until  the  water  fails  to  red- 
den blue  litmus  paper.  Dry  the  precipitate  at  a  temperature  of  not 
more  than  98  degrees  F.  The  yield  should  be  from  four  to  five 
ounces  at  a  cost  of  from  twenty  to  thirty  cents  an  ounce.  If  the 
process  is  carefully  carried  out,  the  product  will  answer  all  the  offi- 
cial requirements. 
Laboratory  Notes. 
By  Willard  Graham. 
Some  interesting  analytical  data  obtained  in  the  examination  of  a 
large  number  of  samples  were  presented  which  embraced  the  fol- 
lowing substances:  Acetone,  acid  benzoic,  acid  phosphoric, antimony 
and  potassium  tartrate,  asafcetida,  belladonna  leaves  and  root, 
cochineal,  cresol,  ether,  guaiacol,  oil  of  camphor,  oil  of  citronella,  oil 
of  cloves,  oil  of  coriander,  oil  of  lavender  flower,  oil  of  lemon,  oil 
of  sandal-wood,  mace,  gum  opium,  potassium  iodide,  resorcin  and 
castile  soap. 
Notes  on  the  Alkaloidal  Assay  Processes  of  the  New 
Pharmacopceia. 
By  Frank  X.  Moerk. 
The  author  gives  an  elaborate  tabular  arrangement  of  some  of 
the  details  of  the  assay  processes  which  upon  careful  examination 
discloses  several  important  points.    First :  Comparison  of  the  alka- 
loidal strength  of  drugs  and  their  preparations  shows  that  the  usually 
relied  upon  statement  that  1  c.c.  of  a  fluid  extract  is  the  equivalent 
