VARIETIES. 
279 
book,"  yet  I  cannot  leave  cassie  without  recommending  it  more  especially 
to  the  notice  of  perfumers  and  druggists,  as  an  article  so  well  adapted  for 
the  purpose  of  the  manufacture  of  essences  for  the  handkerchief  and  pomades 
for  the  hair.  When  dilated  with  other  odors,  it  imparts  to  the  whole  such 
a  true  flowery  fragrance,  that  it  is  the  admiration  of  all  who  smell  it,  and 
has  not  a  little  contributed  to  the  great  sale  which  certain  proprietary 
articles  have  attained. 
To  those  who  are  inexperienced,  we  caution  them  not  to  confound  cassie 
with  cassia,  which  has  a  totally  different  odor.  (To  be  continued.) 
A  Permanent  Double  Salt  of  the  Protoxide  of  Iron. — The  author  states  that 
the  white  carbonate  of  protoxide  of  iron,  precipitated  from  a  solution  of  pro- 
tochloride  of  iron  by  carbonate  of  soda,  dissolves,  on  the  addition  of  diluted 
muriatic  acid,  to  a  colorless  fluid,  which  remains  unchanged  exposed  in 
open  vessels  to  the  air,  does  not  become  colored  or  turbid,  and  also  leaves, 
on  evaporation,  an  almost  colorless  double  salt,  which,  exposed  to  the  air, 
becomes  moist,  but  undergoes  no  other  change.  As  the  dry  double  salt,  on 
account  of  its  hygroscopic  properties,  is  less  suitable  for  medical  use  than 
.its  solution,  the  author  recommends  the  following  form  for  the  preparation 
of  the  solution  for  use  ; — 
Liquor  Ferri  et  Sodce  Nitrico- chloridi : 
In  one  ounce  of  muriatic  acid,  of  specific  gravity,  1.110  iron  wire  is  added 
in  excess  and  dissolved,  so  that  a  portion  remains  undissolved.  To  the  pale 
green  clear  solution  a  saturated  solution  of  carbonate  of  soda  is  added  for  the 
entire  precipitation  of  the  iron  ;  afterwards,  so  much  diluted  nitric  acid  is 
added  as  will  exactly  dissolve  the  precipitate;  and,  lastly,  the  solution  is 
diluted  with  distilled  water,  until  the  entire  solution  weighs  6  ounces.  An 
ounce  then  contains  12.5  grammes  of  iron,  which  are  proportionate  to  40 
grammes  of  protonitrate  of  iron,  and  26  grammes  of  chloride  of  sodium. 
This  preparation  is  a  colorless  fluid,  without  odor ;  possesses  a  saline 
styptic  taste;  may  be  preserved  for  a  long  time  without  change  ;  and  leaves 
behind,  on  evaporation,  nearly  a  white  salt. — Annals  of  Pharmacy,  March, 
1854.  ["The  word  grammes,  where  it  occurs  in  this  paper,  should  read  grains. 
As  the  Editors  of  the  Annals  give  no  authority,  they  are  responsible  for 
the  error. — Editor  Amer.  Jour.  Pharm.] 
The  Application  of  Sulphate  of  Copper  for  the  preservation  of  the  Skins  of\ 
Animals.  By  Dr.  W.  Wicke. — The  doubtful  efficacy  of  arsenious  acid  for 
the  above  object  is  known.  "Without  mentioning  that  it  poisons  the  air  of 
chambers  by  slow  decomposition,  the  true  skin  is  destroyed  by  a  peculiar 
arsenic  emulsion,  or  the  arsenic  is  only  strongly  taken  up  by  the  adhering 
flesh  and  fat,  while  the  epidermis  and  the  feathers  are  exposed  to  the  un- 
retarded  destruction  of  the  insect,  which  is  chiefly  to  be  feared. 
Some  time  since,  sulphate  of  iron  was  recommended  instead  of  arsenious 
