Am.  Jour.  Pharm. ) 
Feb.,  1883.  [ 
Practical  Notes. 
99 
PRACTICAL  NOTES  FROM  VARIOUS  SOURCES. 
By  the  Editor. 
Preparation  of  Bougies. — Labler  manipulates  as  follows  :  White 
gelatin  2  parts  is  dissolved  in  water  8  parts,  and  glycerin  1  j^art,  and 
the  solution  heated  in  a  water-bath,  until  a  drop  of  it  placed  upon  a 
glass  or  marble  slab  has  the  proper  consistence  after  cooling  ;  the 
necessary  quantity  of  tannin  (?),  iodoform,  etc.,  dissolved  in,  or  tritur- 
ated with  a  little  water,  is  then  added,  the  whole  stirred  and  heated 
until  the  water  has  been  evaporated,  when  the  mass  is  sucked  up  in 
glass  tubes  of  the  requisite  diameter.  The  glass  tube  is  closed  with  the 
finger,  and  then  laid  upon  a  cool  slab.  The  glass  tube  having  been 
previously  cut  with  a  file  near  the  middle,  and  united  again  by  pasting 
a  strip  of  paper  around  the  joint,  the  paper  is  soaked  off,  the  two 
halves  of  the  tube  are  sufficiently  pulled  apart,  so  as  to  withdraw  a 
small  portion  of  the  bougie,  and  by  means  of  the  spritz  a  little  water 
is  dropped  between  the  glass  and  the  mass,  when  the  latter  may  be 
easily  withdrawn  from  one-half  of  the  tube,  and  after  a  similar  manipu- 
lation, also  from  the  other  half.  In  this  manner  bougies  0*5  meter 
long  may  be  easily  obtained,  and  afterwards  cut  to  suit. — Rundschau, 
1882,  p.  676  ;  from  Casopis  cesk.  lek. 
The  oiling  of  the  interior  of  the  glass  tube,  previous  to  filling  it 
with  the  hot  gelatin  solution,  as  suggested  by  F.  Friedrichs  in  1880, 
appears  to  facilitate  the  subsequent  withdrawing  of  the  bougie  by  push- 
ing it  out  of  the  tube  by  means  of  a  suitable  rod.  (Editor  Am.  Jour. 
Pharm.) 
Solubility  of  Morphia  Salts  in  Water. — D.  B.  Dott  has  determined 
the  solubility  by  the  method  of  digestion  at  the  temperature  of  60°F., 
and  from  a  mean  of  several  experiments  arrived  at  the  following 
results : 
One  part  of 
Morphine  hydrochloride,  MHC1-3H20  is  soluble  in  23-9  parts  of  water, 
Morphine  sulphate,  M2H2S04-5H20  "  23-01 
Morphine  acetate,  M  C2H402'3H20  "       "  2-44 
Morphine  tartrate,  M2C,H606-3H20  "       "  9-7 
Morphine  meconate,  M2C\H40/5H20  "       "     33*9      "  " 
In  the  formulas  given,  M  signifies  Ci^H^gNOg. 
Phar.  Jour,  and  Trans.,  Nov.  18,  1882,  p.  401-403. 
Emplastrum  Ichthyocollce  impermeabile. — Eugene  Dietrich  has  exam- 
ined a  Russian  water-proof  courtplaster,  and  gives  the  following  direc^ 
