396 
Announcements. 
Am.  Jour.  Pharm. 
June,  I9I9- 
tions  from  the  original  source  (the  human  body).  Owing  to  the 
extremely  important  influence  which  the  broth  has  on  the  character- 
istics of  the  B.  typhosus  employed  as  the  test  organism  in  the 
Rideal-Walker  test,  particularly  as  regards  the  peptone,  attention  is 
drawn  to  the  fact  that  this  is  prepared  according  to  the  following 
modification  of  the  formula  of  Dr.  S.  Rideal  (Fourteenth  Inter- 
national Congress  for  Hygiene  and  Demography,  Berlin,  1907)  : 
Lemco,  20  Grams.  Peptone  (Allen  &  Hanbury's  "Eupepton")  20  Grams. 
Sodium  chloride,  10  Grams.  Water  to  1  liter.  Boil  the  mixture  for  thirty 
minutes,  neutralize  with  normal  caustic  soda  (phenolphthalein  indicator),  add 
15  cubic  Centimeters  of  normal  hydrochloric  acid;  make  up  to  1  liter  with 
distilled  water,  filter,  and  finally  sterilize. 
The  culture  employed  must  conform  with  the  requirements  laid 
down  by  the  authors  of  the  test  (v.  Lancet,  September  25,  191 5, 
p.  717) — viz.,  "Life  in  two  and  a  half  minutes  and  five  minutes 
and  no  life  thereafter,"  with  "  phenol  dilutions  not  higher  than 
1 :  no  or  lower  than  1 : 90." 
ANNOUNCEMENTS. 
THE  UNITED  STATES  PHARMACOPGEIAL  CONVEN- 
TION OF  1920. 
Article  VIII,  Chapter  I  of  the  By-Laws  of  the  United  States 
Pharmacopceial  Convention  provides  that  the  president : 
"shall  issue,  on  or  about  the  first  of  May  of  the  year  immediately 
preceding  that  of  the  decennial  meeting,  a  notice  inviting  the  several 
bodies,  entitled  under  the  Constitution  to  representation  therein,  to 
send  delegates  to  the  next  meeting.  He  shall  repeat  the  notification 
eight  months  later,  and  shall  request  the  medical  and  pharma- 
ceutical journals  of  the  United  States  to  publish  the  call  for  said 
meeting." 
Article  II  of  the  Constitution  provides : 
"  The  members  of  the  United  States  Pharmacopoeial  Convention, 
in  addition  to  the  Incorporators  and  their  associates,  shall  be  dele- 
gates elected  by  the  following  organizations  in  the  manner  they  shall 
respectively  provide :  Incorporated  medical  colleges,  and  medical 
