.Am,  Jour.  Pharm. ) 
ec,  1882.  I 
Gossypium  Barhadense, 
595 
14  and  15.  Calcium  and  magnesium  nitrates  ;  no  precipitates. 
16.  Lead  nitrate;  crystalline  precipitate,  shown  in  E. 
Presence  of  other  Salts. — 2  cc.  of  the  bismuth  solution  added  to  10 
cc.  of  strong  solutions  of  the  following  salts  : 
17.  Calcium  chloride;  18.  Sodium  sulphate;  19.  Manganese  chlor- 
ide ;  20.  Citric  acid  ;  no  precipitates. 
20.  Sodium  thiosulphate ;  black  precipitate,  probably  due  to  reduc- 
ing action. 
21.  Potassium  acetate ;  copious  amorphous  precipitate. 
22.  Sodium  chlorate;  amorphous  precipitate. 
Various  llenstruums. — 2  cc.  of  the  bismuth  solution  added  to  the 
liquids,  of  which  10  cc.  were  used,  except  where  otherwise  stated. 
23.  Water  2  cc.  ;  no  precipitate.   See  also  experiments  1,  2,  3. 
24.  Water  100  cc. ;  after  24  hours  prismatic  crystals,  F. 
25.  Glycerin;  no  precipitate, — added  to  100  cc.  water;  no  change. 
26.  Glycerin  10  cc.  and  water  100  cc.  mixed ;  no  precipitate. 
27.  Syrup  ;  no  precipitate. 
The  appearance  of  commercial  bismuth  sub-nitrate  after  elutriation 
is  shown  under  G  and  H. 
Quantitative  Results, — 10  cc.  of  the  solution  were  precipitated,  first 
with  50  cc.  cold  water ;  secondly  with  50  cc.  boiling  water,  and  thirdly 
with  500  cc.  cold  water ;  the  precipitates  were  dried  in  an  air-bath, 
weighed,  then  ignited  and  again  weighed.  A  sample  of  bismuth  sub- 
nitrate  IV,  prepared  strictly  in  accordance  with  the  Pharmacopoeia  of 
1870,  was  examined  in  like  manner.    The  results  were  as  folhnvs: 
I.  II.  III.  IV. 
Weight  of  precipitate,    .         1*0  gra.  1*05  gm.       '396  gra.  1*0  gm. 
Weight  of  oxide,       .         .      '753  gm.  '855  gm.     -329  gm.       '805  gm. 
Percentage  of  oxide,      .        75-3  81-4  83  3  86-5 
The  formula  BiON03  indicates  81*2  per  cent.  Bi203,  and  the  formula 
BiON03H20=76*47  per  cent,  of  oxide,  obtainable  by  ignition. 
The  leaves  of  Gossypium  barbadense,  according  to  Anderson, 
are  used  in  Jamaica  as  a  galactagogue,  in  the  form  of  infusion,  6  or  8 
leaves  being  used  to  the  tcacupful.  The  taste  of  the  infusion  is  not 
unpleasant,  and  may  be  im])r()ved  by  the  addition  of  milk  and  sugar. 
According  to  the  effect  |)rodu(eil,  four  teacupfuls  or  more  are  taken  in 
24  hours.— ^rc/i.  d.  Phar,,  Oct.,  1882,  p.  762;  AUg.  Med.  C.  Ztg. 
