Am.  Jour.  Pharm. 
June,  1904. 
Elizabeth  Marshall. 
275 
The  number  of  apprentices  gradually  increased  until  as  many  as 
twelve  were  employed  at  one  time.  Among  these  early  appren- 
tices were  some  of  the  most  prominent  pharmacists  of  Philadelphia, 
and  it  may  well  be  said  that  all  of  them,  in  later  years,  were  grateful 
indeed  for  the  practical  training  they  received  from  this  skilled  and 
highly  efficient  woman  pharmacist. 
In  the  matter  of  practical  contributions  this  store  was  also  one  of 
the  first  to  appreciate  the  necessity  of  and  to  provide  distinctly 
American  preparations.    Many  of  the  preparations  now  extensively 
From  a  Painting  in  Possession  of  Charles  Marshall,  Germantown. 
used  originated  in  this  store,  and  were  first  made  popular  as  the 
favorite  prescriptions  of  one  or  the  other  of  the  Philadelphia  prac- 
titioners of  that  time.  Among  the  more  widely  known  of  these 
preparations,  we  may  mention  brown  mixture,  the  mistura  glycyr- 
rhizse  composita  of  the  United  States  Pharmacopoeia.  This  prepa- 
ration is  said  to  have  originated  in  this  store  about  1814,  as  the 
favorite  prescription  of  Dr.  Benjamin  Smith  Barton,  a  well-known 
American  botanist  and  teacher  of  materia  medica,  and  the  sue- 
