Am >nuri8^6.arm' }       Gleanings  from  Foreign  Journals.  29 
per  cent,  of  anhydrous  citrate.  Mr.  Umney  advocates  the  adoption  of 
the  crystallized  salt,  which  is  thoroughly  definite  and  reliable  and  whose 
appearance  would  guarantee  its  uniformity.  The  definition  of  "delin- 
quescent,"  applied  by  the  two  pharmacopoeias,  is  inaccurate. — Pharm, 
Jour,  and  Trans.,  1875,  Sept.  11. 
Bromide  of  Lithium  is  prepared  by  Yvon  by  mixing  37  grams  of  car- 
bonate of  lithium,  200  grams  of  distilled  water  and  80  grams  of  bro- 
mine, and  passing  a  current  of  sulphuretted  hydrogen  through  the 
mixture  until  the  color  of  bromine  has  disappeared.  A  slight  heat  is 
then  applied  to  drive  off  excess  of  sulphuretted  hydrogen  and  to  agglu- 
tinate the  sulphur.  After  filtration,  the  liquor  is  concentrated  and 
finally  crystallized  by  desiccating  it  under  a  glass  over  sulphuric  acid. 
It  may  also  be  obtained  by  double  decomposition.  Sulphate  of  lithium 
is  first  formed  by  treating  37  grams  of  carbonate  of  lithium  with  49 
grams  of  monohydrated  sulphuric  acid,  diluted  with  its  own  volume  of 
water.  On  the  other  hand,  119  grams  of  potassium  bromide  are  dis- 
solved in  the  smallest  possible  quantity  of  water.  When  the  two 
solutions  are  mixed,  an  abundant  precipitate  of  potassium  sulphate  is 
produced  and  increased  by  the  addition  of  a  little  alcohol.  The  whole 
is  evaporated  to  dryness,  finishing  the  operation  on  a  water-bath,  and 
the  residue  is  treated  with  alcohol  which  removes  only  bromide  of 
lithium  and  deposits  it  again  on  evaporation.  The  bromide  may  then 
be  crystallized  from  water  or  kept  in  solution  of  known  strength. — 
Ibid.,  Sept.  18. 
Combinations  of  glacial  acetic  acid  with  oils. — As  a  continuation  of  his 
paper  on  the  solubility  of  alkaloids  in  oil  ("Am.  Jour.  Pharm.,"  1875, 
p.  540),  Mr.  J.  B.  Barnes  communicates  the  following  results  of  his 
experiments. 
The  minimum  combining  proportions  of  the  following  five  commer- 
cial samples  of  oil  are,  for  one  volume  of  glacial  acetic  acid,  almond 
oil  7  vol.,  olive  oil,  8  vol.,  codliver  oil,  7  vol.,  linseed  oil  7  vol.,  and 
oil  of  rhodium  4  vol. 
The  maximum  combining  proportions  of  the  next  five  are,  for  one 
volume  of  the  acid,  oil  of  turpentine,  \  vol.,  oil  of  lemon,  2  vol.,  oil 
lemon  grass,  2  vol.,  oil  of  lemon  grass,  2  vol.,  oil  of  copaiba,  ^  vol., 
oil  of  juniper,  1  vol. 
The  following  41  oils  will  mix  with  glacial  acetic  acid  in  all  propor- 
tions :  castor,  cloves,  croton,  caraway,  rosemary,   sandal,  cajeput, 
