40  Abstracts  from  the  French  Journals.  {Ami£Z'm*Tm' 
but  a  few  minutes  and  is,  according  to  the  author,  M.  Vizern, 
absolutely  exact.  The  perfectly  neutral  solution  of  the  salt  to  be 
estimated,  to  which  a  few  drops  of  an  alcoholic  solution  of  phenol- 
phthaleine  are  added,  is  heated  to  near  the  boiling  point  and  then  an 
alkaline  carbonate  solution  (53  gm.  sodium  carbonate  per  liter)  is 
added  drop  by  drop,  from  a  graduated  burette,  until  a  permanent 
rose-red  tint  is  produced.    Note  the  quantity  used  and  calculate. 
1  cc.  normal  alkaline  solution  =  0*02       gm.  calcium. 
1  cc.  "  =  o  '04375  gm.  strontium. 
1  cc.  "  "  =  0-0683    gm-  barium. 
The  process,  however,  cannot  be  applied  if  the  liquid  contains  any 
other  substance  precipitable  by  the  alkaline  carbonate.  Following 
are  some  of  the  results  obtained  by  the  author : 
Estimation  by  Volumetric 
Weight.  Estimation. 
Barium,                                                       1  '244  gm.  1  -253  gm. 
Strontium,                                        .  .  .     0*697  gm.  07087  gm. 
Calcium,                                                    0*638  gm.  0*642  gm. 
— Jour,  de  Pharm.  et  de  Chim.,  November,  1893,  p.  442. 
Creosotal  is  the  carbonate  of  creosote,  containing  90  per  cent,  of 
pure  creosote,  rich  in  guaiacol ;  it  is  a  thick  liquid  and  has  a  neutral 
reaction ;  is  insoluble  in  water,  but  soluble  in  four  or  five  parts  of 
cod-liver  oil  or  olive  oil.  The  daily  dose  for  a  child  is  1-6  gm., 
and  4-15  gm.  for  an  adult.  It  can  be  made  into  an  emulsion  by  beat- 
ing j^2-2  teaspoonfuls  with  the  yolk  of  an  egg  and  diluting  with 
sweetened  and  aromatized  water. — Jour,  de  Pharm.  d'Anvers., 
November,  1893,  p.  415. 
Vasogen  or  oxygenated  vaseline,  which  is  a  mineral  oil  treated  with 
an  excess  of  hydrogen  dioxide,  forms  an  emulsion  with  water  upon 
treatment  with  alkalis.  It  is  a  good  excipient  for  iodoform,  creosote, 
ichthyol,  menthol,  pyrogallol,  chrysarobin,  etc.,  but  as  it  loses  the 
property  of  forming  an  emulsion  by  the  action  of  heat,  these  must 
be  incorporated  during  the  process  of  preparation. — Ibid.,  p.  416. 
Nasrol,  the  sulphocaffeinate  of  sodium  is  recommended  as  an 
energetic  diuretic ;  it  has  a  bitter  taste,  is  very  soluble  in  boiling 
water,  but  only  slightly  soluble  in  cold. water. — Ibid.,  p.  416. 
Lanaine,  which  is  extracted  from  wool,  is  a  clear,  yellow  hetero- 
geneous fat,  fusible  near  360  C,  neutral  and  permanent  in  air;  it  is 
easily  soluble   in   ether,  benzene,  chloroform  and  acetone ;  but 
