A™ii°dT  wYm'  ]  Influence  °f  Pharmacists  on  Chemistry.  203 
in  the  United  States.  This  method  has  been  generally  adopted 
and  used  by  all  makers  of  lead. 
"The  name  of  the  first  white  lead  firm  was  Samuel  Wetherill  & 
Son,  Samuel  Wetherill,  Jr.,  evidently  being  the  active  member. 
After  his  father's  death  in  18 16,  Samuel  Wetherill,  Jr.'s,  sons 
joined  the  business  and  the  firm  became  Samuel  Wetherill  &  Sons. 
After  the  death  of  Samuel  Wetherill,  Jr.,  in  1829,  it  became 
Wetherill  Brothers.  The  store  of  the  firm  was  at  65  North  Front 
Street;  the  warehouse  and  mill  of  the  old  establishment  were  on 
Coomb's  Alley,  back  of  Second  Street. 
"When  the  residence  part  of  the  city  spread  to  Twelfth  and 
Cherry  Streets,  Samuel  Wetherill,  having  bought  ten  acres  of  land 
on  the  bank  of  the  Schuylkill  River,  below  Chestnut  Street,  moved 
there  in  1847;  his  sons  (Wetherill  and  Brother)  built  the  white 
lead  and  chemical  works  and  continue  to  this  day." 
John  Harrison  also  began  the  manufacture  of  white  lead  in 
1806.  The  firm  of  Mordecai  &  Samuel  N.  Lewis,  which  after- 
wards became  John  T.  Lewis  &  Brothers,  also  began  the  manu- 
facture of  white  lead  in  1812,  making  three  Philadelphia  firms 
manufacturing  paint  colors  at  that  time.  These  three  earliest 
manufacturers  of  white  lead  and  paint  colors  or  their  lineal  succes- 
sors have  continued  in  business  to  the  present  time,  for  considerably 
over  a  century,  and  have  done  much  to  give  Philadelphia  its  long- 
continued  prominence  as  a  chemical  manufacturing  center. 
One  of  the  lines  of  manufacture  that  contributed  to  make 
Philadelphia  a  great  chemical  center  early  in  the  last  century  was 
that  of  the  yellow  and  red  prussiates  of  potash.  I  have  been  fur- 
nished a  private  memorandum  concerning  the  activities  of  the  firm 
who  began  this  industry  and  were  active  in  it  for  many  years. 
"Under  the  firm  name  of  Carter  &  Scattergood,  a  profitable 
chemical  manufacturing  business  was  conducted  from  1834  to  191 1 ; 
and  was  absorbed  in  the  latter  year  by  The  Henry  Bower  Chemical 
Mfg.  Co. 
"7ohn  Carter  and  Joseph  Scattergood  bought  out  the  old- 
established  business  of  (]ohn  &  Daniel  Elliott'  founded  in  1754  by 
their  grandfather,  John  Elliott. 
"Jos.  Scattergood  graduated  P.  C.  P.,  1829. 
"The  Elliotts'  place  of  business  and  factory  was  originally  on 
Front  Street,  between  Chestnut  and  Walnut  Streets,  but  in  18 12, 
the  manufacturing  work  was  transferred  to  a  new  factory  which 
