408 
CHEMICAL  RESEARCHES  ON  AMYLENE. 
in  making  ordinary  carbonic  acid  water,  and  is  then  finished,  and 
may  either  be  sold  on  draught,  or  bottled  by  the  apparatus  used 
in  bottling  mineral  waters  under  pressure. 
Since  the  formula  of  Soubeiran  was  published,  several  analyses 
of  Vichy  water  have  been  made  which  have  proved  its  composi- 
tion to  be  more  complex  than  the  analyses  of  Longchamps  states 
it  to  be.  The  best  of  these  is  that  of  M.  Bouquet,  read  to  the 
French  Academy  in  August  1854.  He  gives  the  composition 
of  the  water  of  the  Grande-Grille  spring  as  follows.  The  quan- 
tities of  each  ingredient  by  weight  in  a  litre  of  1000  grammes  is 
as  follows,  viz  : — 
Free  carbonic  acid,  0*908 
Bicarbonate  of  soda,  4*883 
Bicarbonate  of  potassa,  0'352 
Bicarbonate  of  magnesia,  0*303 
Bicarbonate  of  strontian,  0*003 
Bicarbonate  of  lime,  0*434 
Bicarbonate  ofprotox.  of  iron,  0*004 
Bicarbonate  of  protoxide  of 
manganese,  traces. 
It  is  thus  seen  that  natural  Vichy  water  contains  arsenic, 
phosphoric,  boracic,  and  silicic  acids,  besides  potassa,  strontia  and 
manganese.  More  recently  M.  Nickles  (Jour,  de  Pharm.  Juillet 
1857,)  has  announced  the  presence  of  fluorine,  whilst  other 
chemists  have  believed  bromine  and  iodine  were  present.  If 
desired,  the  more  important  of  these  additional  ingredients  might 
be  added,  and  thus  approach  the  artificial  water  more  nearly  to 
that  of  the  spring  ;  but  the  disproportion  between  the  other  in- 
gredients in  the  two  formulae  renders  such  additions  of  doubtful 
propriety  without  entirely  reconstructing  that  for  the  artificial 
water. 
Sulphate  of  soda, 
0*291 
Phosphate  of  soda, 
0*130 
Arseniate  of  soda, 
0*002 
Borate  of  soda, 
traces. 
Chloride  of  sodium, 
0*534 
Silica, 
0*070 
Bituminous  matter, 
traces. 
« 
Total 
7*914 
CHEMICAL   RESEARCHES  ON  AMYLENE. 
By  M.  Durot. 
A  memoir  communicated  to  "  V  Academie  Imperiale  de  Ifedecine,"  of  Paris. 
Translated  and  abridged  from  V  Union  Medicale,  of  April  7  and  9,  1857,  by  M. 
Morton  Dowler,  M.  D.,  New  Orleans. 
Properties  of  Potato- Oil. 
Potato-oil,  which  also  bears  the  synonymes  of  amylie  alcohol, 
the  bi-hydrate  of  amylene,  and  the  hydrate  of  the  oxyde  of 
amylene,  (fusel  oel,  of  the  Germans,)  in  the  form  in  which  we 
