ON  THE  MANUFACTURE  OF  QUININE  IN  THE  UNITED  STATES.  30$ 
It  will  be  here  seen  that  this  salt  has  the  same  chemical  con- 
stitution as  the  alums,  namely,  Fe2  03,  3  S03  -f-  CU  0  S03,  -{-24 
HO,  but  differs  entirely  in  its  crystalline  structure — in  fact,  so 
much  so,  as  not  to  admit  of  its  form  being  derivable  from,  or 
convertible  into,  that  of  the  true  alums. 
Persulphate  of  Iron  and  Sulphate  of  Zinc — This  salt  was 
prepared  in  exactly  the  same  manner  as  the  one  previously 
described.  It  crystallizes  in  white  transparent  prisms,  and  cor- 
responds to  the  double  copper  salt  in  all  its  characteristics  ;  and 
although  it  was  not  submitted  to  an  exact  quantitative  analysis, 
its  examination  left  no  doubt  but  that  it  has  a  similar  constitu- 
tion to  that  of  the  persulphate  of  iron  and  sulphate  of  copper. 
Persulphate  of  Iron  and  Sulphate  of  Magnesia  This  salt, 
prepared  as  the  other  salts,  crystallized  in  warty  masses,  consist- 
ing of  prisms,  and  corresponds  to  them  in  its  chemical  and  phy- 
sical properties. 
It  is  evident  that  the  number  of  these  salts  may  be  multiplied 
to  an  almost  endless  extent,  and  it  is  equally  evident,  if  we  may 
presume  to  generalize  upon  the  facts  before  us,  that  the  multi- 
plication of  these  salts  would  serve  to  further  prove  the  impro- 
priety and  inconvenience  of  applying  the  term  alums  to  such 
salts,  for  the  pseudo-alums  would  then  greatly  outnumber  the 
true  alums.  It  seems  from  the  experiments  of  Will  and  Ortigosa 
that  the  number  of  the  true  alums  may  be  increased,  if  it  be 
desirable  to  do  so,  by  replacing  the  ammonia  or  potash  of  the 
double  sulphates  of  alumina,  manganese,  chrome,  and  iron,  with 
organic  bases,  by  which  means  compounds  may  probably  be  made 
likely  to  be  interesting  and  valuable  both  to  the  physician  and 
the  pharmaceutist. — London  Pharm.  Jour.,  June,  1854. 
MANUFACTURE    AND   CONSUMPTION    OF  QUININE  IN  THE 
UNITED  STATES. 
To  the  Editor  of  the  Pharmaceutical  Journal. 
Sir, — An  article  in  your  last  number  on  the  Manufacture  and 
and  Consumption  of  Quinine  in  the  United  States,  claims  notice, 
from  the  circumstance  of  its  appearing  in  a  journal  of  so  much 
authority  as  yours.  In  its  original  form  of  a  letter  to  a  news- 
paper, it  would  have  been  noticed  only  as  an  advertisement,  but 
