30  Chemical  Manufacturing  in  Philadelphia    {Aman^°^  ^\r7m' 
Farr  and  Kunzi  were  next  in  Philadelphia  to  follow  the  lead  of 
Harrison  in  making  sulphuric  acid  which  it  is  stated  they  did  in 
1 812,  and  shortly  thereafter  Wetherill  &  Bros,  also  began  the  manu- 
facture of  sulphuric  acid  on  the  east  bank  of  the  Schuylkill  River. 
Chas.  Lennig,  the  founder  of  the  present  firm  of  Chas.  Lennig  & 
Co.,  Inc.,  also  began  the  manufacture  of  sulphuric  acid  in  1829, 
Rosengarten  &  Sons  shortly  thereafter,  and  Carter  &  Scattergood  in 
1834  also  were  early  manufacturers  of  sulphuric  acid. 
Nitric  acid  under  the  name  of  aqua  fortis  is  mentioned  in  Scharf 
&  Westcott's  History  of  Philadelphia  as  made  by  Christopher  Mar- 
shall, Jr.,  a  Philadelphia  druggist,  at  the  close  of  the  eighteenth  cen- 
tury. A  communication  from  Mr.  Thos.  Skelton  Harrison  says  his 
grandfather,  John  Harrison,  began  to  make  both  nitric  and  muriatic 
acids  in  1804.  Carter  &  Scattergood  had  it  on  their  list  of  manu- 
factures in  1834.  Muriatic  acid  is  also  mentioned  as  made  by  this 
latter  firm  in  the  year  1834,  as  were  tartaric  acid  and  citric  acid. 
Manufacture  of  Paint  Colors. 
We  have  here  another  record  of  which  Philadelphia  may  be 
proud.  We  have  already  referred  to  the  energetic  work  of  Samuel 
Wetherill  in  starting  American  lines  of  manufacture  just  prior  to  the 
opening  of  the  Revolutionary  War.  About  1789  he  began  the  manu- 
facture of  white  lead  in  Philadelphia  and  persisted  in  it,  despite  great 
efforts  made  on  the  part  of  the  importers  to  hinder  him  by  under- 
selling and  misrepresenting  him.  The  first  white  lead  factory  of 
Samuel  Wetherill  &  Sons  was  built  in  1804  at  the  corner  of  Broad 
and  Chestnut  streets,  but  it  was  burned  down  a  few  years  later,  and 
in  1808  they  erected  a  new  factory  at  Twelfth  and  Cherry  Streets. 
His  son,  Samuel  Wetherill,  Jr.,  was  the  active  man  of  the  concern,  and 
assisted  his  father  in  all  business  matters.  The  enforced  experience  which 
was  pressed  upon  them  during  the  Revolution,  concentrated  their  attention 
upon  the  manufacture  and  sale  of  chemicals,  and  they  went  into  the  drug 
business.  In  1785  Samuel  Wetherill  &  Son  were  located  in  Front  Street 
above  Arch.  Here,  for  many  years,  "  Wetherill' s  drug  store "  was  an  old 
landmark,  and  the  place  at  which  sons  and  grandsons  were  brought  up  to 
the  business.  The  Wetherills  were  the  pioneers  in  the  manufacture  of  white 
lead.  They  established  it  before  the  year  1790.  They  erected  extensive  white 
lead  works  near  Twelfth  and  Cherry  Streets,  which  were  burnt  down  in  1813, 
but  afterwards  rebuilt.  » 
The  fire  which  destroyed  the  white  lead  works  proved  to  be  incendiary 
and  started  by  a  young  English  officer  the  day  before  he  sailed  for  England. 
