Am.  Jour.  Pharm.) 
February,  1920.) 
Composition  Powder. 
95 
Sand:  "Rapid  Blectrometric  Deposition  and  Separation  of  Metals," 
Ihid.,  91 :  374,  1907. 
Denham:  "Blectrometric  Determination  of  Hydrolysis  of  Salts,"  Ibid., 
93:  41,  1908. 
Bailey:  "Simple  Hydrogen  Electrode."  Jour.  Minnesota  Ag.  Exp.  Sta., 
Paper  180;  through  Jour.  Am.  Chem.  Sac,  42:  45,  1920. 
Glark:    "Hydrogen  Electrode  Vessel,"  Jour.  Biol.  Chem.,  23:  2,  1915. 
Kelley  and  Conant:  "Determination  of  Chromium  and  Vanadium," 
Jour.  Ind.  Eng.  Chem.,  8:  719,  1916. 
Kelley  and  others :    "Apparatus," 9:  780,1917. 
Kelley  and  others :    "Determination  of  Manganese," 10:  19,  1918. 
Kelley  and  others :    "Determination  of  Vanadium," 11:  632,  1919. 
Cain  and  Maxwell:  "Determination  of  Carbon  in  Steel,"  Ibid.,  11:  852, 
1919. 
Clark:  "Bacteriological  Culture  Media,"  Jour.  Infectious  Dis.,  17:.  109, 
1915. 
Kelley:  "Blectrometric  Titration  Apparatus,"  Sup.  60-9,  19 19.  Arthur 
H.  Thomas  Company,  Philadelphia.    "Apparatus  and  Methods." 
Milroy:  "Difficulties  in  Blood  Work,"  Quarterly  Jour,  of  Exp.  Physiol., 
8:  141,  1914. 
McClendon:  "Physical  Chemistry  of  Vital  Phenomena."  Princeton  Uni- 
versity Press,  1 91 7. 
Findlay:  "Practical  Physical  Chemistry."  Longmans,  Green  and  Com- 
pany, London,  19 14. 
COMPOSITION  POWDER. 
By  Edward  J.  Hughe:s,  P.D., 
PHILADELPHIA,  PA, 
In  order  to  determine  just  what  Composition  Powder  is,  we  should 
go  over  some  of  the  compHcated  references  deahng  with  this  prepa- 
ration and  extending  back  to  its  origin  nearly  a  century  ago.  For  a 
long  time  Composition  Powder  was  a  popular  and  widely  used  remedy. 
At  present  this  title  is  recognized  by  the  National  Formulary  (4th. 
Rev.)  as  a  synonym  for  Pulvis  Myricae  Compositus  or  Compound 
Powder  of  Bayberry.  The  N.  F.  requires  that  it  shall  be  made  by 
mixing  together  twelve  parts  of  powdered  bayberry  root  bark,  six 
parts  of  powdered  ginger  and  one  part  each  of  powdered  capsicum 
and  powdered  cloves. 
A  search  through  the  literature  reveals  a  great  variety  of  form- 
ulas for  Composition  Powder,  with  little  or  no  comment  as  to  their 
