Am.  Jour.  Pharm.  j 
November,  1905.  / 
Chemical  Materia  Medica. 
543 
Zinc  sulphate,  "  white  vitrol ;"  known  to  Basilius  Valentinus. 
Ferric  chloride,  lead  acetate  and  the  spirit  of  nitrous  ether  were 
all  known  to  Basilius  Valentinus. 
DURING  THE  XVI.  AND  XVII.  CENTURY  WERE  ADDED. 
Sulphuric  ether ;  discovered  by  Valerius  Cordus,  about  1 540,  and 
by  him  described  as  "  Oleum  vitrioli  dulce,"  this  preparation  appears 
to  have  been  forgotten  until  rediscovered  by  Frobenius,  a  London 
apothecary,  about  1730. 
Mercurous  chloride ;  known  in  Europe  in  the  XVI.  century. 
Oil  of  anise,  oil  of  cloves  ;  known  to  Valerius  Cordus. 
Benzoic  acid;  known  about  1608. 
Antimony  and  potassium  tartrate ;  produced  by  Adriano  van 
Mynsicht,  1 631. 
Zinc  chloride;  mentioned  by  Glauber,  1648,  as  "  Oleum  lapidis 
caliminaris." 
Sodium  sulphate;  known  to  Glauber,  1658. 
Potassium  permanganate;  Glauber,  in  1659,  noted  the  peculiar 
color  that  was  produced  on  fusing  potassium  nitrate  with  manganese 
dioxide.  The  composition  of  potassium  permanganate  was  first 
described  by  Mitscherlich  in  1 830.  The  name  "  Chamselon  miner- 
ale  "  was  given  to  it  by  Scheele. 
Ammonium  acetate ;  was  introduced  by  R.  Minderer  during  the 
XVII.  century. 
Phosphorus  ;  discovered  by  Brand,  in  urine,  about  1669.  More 
carefully  studied  by  Gahn,  1769,  and  by  Scheele,  1771,  who  demon- 
strated its  presence  in  bones. 
Sodium  borate ;  probably  known  at  an  earlier  period,  was  reintro- 
duced during  the  XVII.  century  by  the  Venetians. 
Potassium,  and  Sodium  tartrate;  introduced  about  1672,  by  an 
apothecary,  P.  Seignette,  of  Rochelle,  France. 
Magnesium  sulphate ;  discovered  1694,  by  Nehemiah  Grew,  in 
the  water  of  a  mineral  spring  at  Epsom,  England. 
DURING  THE  XVIII.  CENTURY  THERE  WERE  INTRODUCED. 
Magnesium  carbonate ;  introduced  as  a  secret  remedy,  "  Magne- 
sia alba,"  about  the  beginning  of  the  XVIII.  century.  The  method 
of  preparing  was  described  by  Valentini,  1707,  and  Slevogt,  1709. 
