Am*junUe?i893arm"}  Gleanings  from  the  German  Journals.^  287 
Salokoll,  the  trade  name  for  phenocoll  salicylate,  has  some  thera- 
peutic advantages  over  the  hydrochlorate  (Am.  Journ.  Pharm.,  1891, 
289).  It  is  claimed  to  be  a  trustworthy  antipyretic,  anti-neuralgic, 
-and  antirheumatic,  in  doses  of  one  to  two  grams. — Pharm.  Ztg., 
1893,  160. 
Tolypyrine  or  /-tolyldimethylpyrazolon  forms  colorless  crystals, 
•melting  at  136-1370,  soluble  in  14  parts  of  water,  very  soluble  in 
alcohol.  It  has  a  very  bitter  taste.  Towards  ferric  chloride  and 
nitrous  acid  it  reacts  like  antipyrine.  As  an  antipyretic,  four  grams 
are  as  effective  as  5-6  grams  antipyrine. — Pharm.  Ztg.,  1893,  183. 
Tests  distinguishing  tolypyrine  and  antipyrine ',  and  which  will  also 
indicate  mixtures  of  the  two,  are  given  by  Dr.  R.  Stock:  (1)  Toly- 
pyrine in  two  per  cent,  solution  will  give  a  precipitate  with  an  excess 
of  sodium  hydrate ;  antipyrine  solutions  must  contain  at  least  five 
j>er  cent,  in  order  to  precipitate  with  this  reagent ;  (2)  the  melting 
point  of  antipyrine  is  1130,  of  tolypyrine  136-1370  C;  mixtures 
containing  10,  25  and  50  per  cent,  tolypyrine  show  the  same  melting 
point  of  940  C;  with  75  percent,  tolypyrine  the  greater  portion  melts 
at  940,  but  complete  liquefaction  requires  1200;  with  90  per  cent, 
tolypyrine  the  mixture  gradually  melts  between  ioo°  and  1300. — 
Pharm.  Ztg.,  1893,  I92- 
Sodium  Carbonate,  in  form  of  small  crystals,  is  prepared  according 
to  a  German  patent,  by  adding  to  100  parts  of  the  effloresced  carbonate 
70  parts  of  water  80-900  C;  by  mixing  the  doughy  mass  the  car- 
bonate unites  with  the  water,  swelling  into  a  mass  of  fine  crystalline 
needles,  which  after  cooling  can  be  at  once  put  into  suitable  pack- 
ages. A  foaming  preparation  for  washing  is  obtained  if  in  the 
water  used  to  mix  with  the  soda,  there  be  dissolved  a  desirable 
quantity  of  soap. — (Ztschr.  f.  angew.  Chemie),  Pharm.  Centralhalle, 
1893,  171. 
Fatty  oils  in  mineral  oils  may  be  detected  if  present  to  the  extent 
of  one  per  cent,  by  heating  1 5  grams  of  the  sample  with  100  cc.  of  a  10 
per  cent,  alcoholic  solution  of  potassium  hydrate  for  one  to  two 
hours  ;  after  cooling,  an  equal  volume  of  water  is  added  and  the 
mixture  filtered  through  a  water- wetted  filter,  the  filtrate  neutralized 
with  hydrochloric  acid  and  calcium  chloride  added  when  an  insoluble 
calcium  soap  will  separate  out  if  a  vegetable  or  animal  fat  was  present 
.in  the  sample.    For  quantitative  work  the  method  is  also  suitable, 
