A?anuair  V^t?™' )    Chemical  Manufacturing  in  Philadelphia.  3  5 
exported  small  quantities  to  Hamburg  paying  a  profit;  Belgium,  France,  Ger- 
many and  Austria  were  immense  producers  of  Crude  Glycerine,  but  like  its 
sister  product  here  in  previous  years,  it  only  found  its  way  to  the  sea.  As 
before  stated,  the  use  and  sale  of  the  Refined  continued  to  improve,  the  crude 
growing  more  scarce  each  season,  until  a  point  has  been  reached  when  every 
available  pound  is  worked  into  a  valuable  product.  It  would  not  be  out  of 
the  way  to  place  the  total  value  of  all  the  Glycerine  sold  in  the  United  States 
at  this  time  at  half  a  million  of  dollars.  This  sum  could  never  have  been 
reached  had  it  not  been  for  the  discovery  of  a  mode  for  refining,  to  which, 
so  far  as  this  country  is  concerned,  I  lay  claim ;  by  a  careful  management  of 
my  business  for  some  years  I  kept  the  process  a  secret,  but  in  time  some 
portions  of  it  came  to  the  knowledge  of  other  persons,  who  have  been  enabled 
to  produce  very  fair  articles.  There  are  besides  myself,  here,  two  refiners 
in  Cincinnati,  one  in  Chicago,  and  one  in  New  York. 
There  were  of  course  other  drug  and  chemical  firms  who  were 
well  and  favorably  known  in  the  early  half  as  well  as  the  later  half 
of  the  nineteenth  century. 
We  have  already  mentioned  the  name  of  Christopher  Marshall, 
Jr.,  who  was  active  in  Revolutionary  days.  Himself  the  son  of  a 
druggist,  he  was  succeeded  by  his  son,  Charles  Marshall,  and  his 
grandson,  Charles  Marshall,  Jr.,  who  in  1814  established  himself  in 
the  wholesale  business  at  310  Market  Street. 
With  this  Charles  Marshall,  Jr.,  entered  as  an  apprentice  Geo. 
W.  Carpenter,  who  later  became  one  of  the  most  prominent  as  well 
as  successful  of  wholesale  druggists  in  Philadelphia.  The  old  store 
of  Carpenter  &  Henszey  at  Eighth  and  Market  Streets  I  remember 
quite  well  as  it  stood  about  forty  years  ago. 
A  very  well  known  drug  firm  of  the  latter  half  of  the  nineteenth 
century  was  that  of  Bullock  &  Crenshaw.  They  were  the  succes- 
sors to  Smith  &  Hodgson  who  established  themselves  as  druggists 
at  the  corner  of  Sixth  and  Arch  Streets  in  1819  where  they  con- 
tinued until  1849  when  they  disposed  of  their  drug  business  to  two 
of  their  employees  who  then  formed  the  firm  of  Bullock  &  Crenshaw. 
This  firm  carried  on  not  only  a  wholesale  drug  business  but  handled 
fine  chemicals  and  chemical  apparatus,  supplying  many  colleges  and 
schools  throughout  the  country.  In  September,  1868,  they  moved 
to  528  Arch  Street,  where  in  larger  quarters  they  carried  on  a  flour- 
ishing business  until  the  death  of  Mr.  Chas.  Bullock,  the  surviving 
partner. 
The  firm  French,  Richards  &  Co.  was  for  many  years  one  of 
the  best  known  of  Philadelphia  drug  firms  at  its  centrally  located 
