Am.  four.  Pharm.  > 
July,  1877.  ; 
Formulas. 
3Sl 
water,  and  filtered.  The  filtrate  is  treated  with  a  slight  excess  of  am- 
monia, and  then  with  a  large  quantity  of  chloroform.  The  chloroform 
solution  is  agitated  with  water,  to  which  hydrochloric  acid  is  added, 
drop  by  drop,  in  sufficient  quantity  to  neutralize  the  alkaloid,  the  hydro- 
chlorate  of  which  is  obtained  in  long  needles  on  evaporating  the  aque- 
ous solution,  while  foreign  principles  remain  dissolved  in  the  chloro- 
form. By  dissolving  the  crystals  in  water,  treating  the  solution  with 
ammonia  and  chloroform,  and  evaporating  the  latter  solution,  pilocar- 
pina  is  obtained  as  a  soft  viscous  mass,  which  is  little  soluble  in  water, 
but  freely  soluble  in  alcohol,  ether  and  chloroform. 
Effervescing  Carbonate  of  Lithium. — Take  of  citric  acid  40  grams, 
bicarbonate  of  sodium  50  grams,  and  carbonate  of  lithium  10  grams. 
Powder  and  mix  well,  then  introduce  into  a  wide  flat-bottomed  dish, 
and  heat  to  about  ioo°C.  (2I2°F.),  stirring  constantly  until  the  pow- 
der becomes  granular.  Separate  the  granules  of  uniform  size  by  means 
of  appropriate  sieves,  and  preserve  them  in  well-stopped  bottles. 
Extract  of  Malt. — Take  of  malt,  the  germ  of  which  has  attained 
two-thirds  the  length  of  the  grain,  dry  at  50°C.  (i22°F.),  grind  and 
treat  it  with  two  parts  of  water  at  the  ordinary  temperature,  stirring  the 
mixture  occasionally.  After  5  or  6  hours  express,  strain,  filter  and 
evaporate  in  a  shallow  dish  at  a  temperature  not  exceeding  450  C. 
("3°F-) 
Syrup  of  Narceina. — Dissolve  1  gram  of  narceina  in  100  grams  of 
water,  containing  '6  gram  hydrochloric  acid  ;  add  to  the  solution  250 
grams  of  water,  and  then  dissolve  650  grams  of  white  sugar.  Each 
tablespoonful  of  20  grams  contains  *02  gram  (J  grain)  of  narceina. 
Pancreatin. — Pancreas  is  freed  from  foreign  matters,  bruised  and 
mixed  with  water  containing  some  chloroform  to  prevent  decomposi- 
tion. After  some  time  the  mass  is  expressed  and  the  liquid  filtered  and 
evaporated  rapidly  in  shallow  dishes  by  means  of  a  current  of  air,  at  a 
temperature  not  exceeding  45°C.  (113F.)  *io  gram  of  pancreatin 
digested  with  5  grams  of  fibrin  and  25  grams  of  water,  at  a  tempera- 
ture of  50°C.  (i22°F.)  for  12  hours,  yields  a  solution  which,  when 
filtered,  is  scarcely  rendered  turbid  by  the  addition  of  nitric  acid.  *io 
gram  of  pancreatin,  adced  to  100  grams  of  paste  containing  5  grams 
starch,  yield  a  liquid  which  filters  easily  and  decolorizes  4  times  its  vol- 
ume of  Fehling's  solution. 
