120 
Glycerin,  etc. 
Am.  Jour,  Pharm 
March  1,  1871. 
price,  has  been  attended  with  success,  as  we  all  know.  A  glycerin 
which  will  answer  almost  every  purpose  (except  for  internal  adminis- 
tration), can  be  procured  for  twenty-five  cents  per  pound  ;  and  one 
fit  for  any  purpose  for  sixty  cents  per  pound. 
One  of  the  principal  reasons  for  bringing  this  matter  before  you, 
is  to  detail  a  comparative  examination  of  the  different  brands  in  the 
market,  which  examination  was  at  first  undertaken  for  the  writer's 
own  satisfaction,  but  which  may  prove  not  uninteresting  to  the  Asso- 
ciation. Each  glycerin  was  tested  by  the  same  reagent,  in  the  same 
relative  quantity,  at  the  same  time  ;  and  the  effect  carefully  noted. 
The  glycerins,  as  they  stood  in  their  commercial  attire  before  the 
examination,  presented  quite  a  contrast ;  the  most  pretentious  was 
one  of  the  latest  comers  into  the  market,  De  Haen's  ;  which,  from  the 
size  of  the  bottle  would  lead  to  the  supposition  that  it  contained  more 
BRANDS. 
For  Strength. 
Sp.  Or. 
Color. 
Odor  when  ■warm . 
Nitrate  of  Silver. 
Sarg's  Chemically  Pure  
1.253 
1.240 
1.250 
1.2.54 
1.250 
1.245 
None. 
Yellowish. 
None. 
Quite  dark. 
None. 
None. 
Fatty. 
Slight. 
Empyreumatic 
Like  glue. 
Slight. 
No  precipitate. 
Heavy  white 
precipitate. 
Rose  color. 
No  precipitate. 
White  precipi- 
tate. 
Rose  color. 
BRANDS. 
Sulpliuric  Acid? 
For  Sulphate  of 
Lime. 
For  Lime  Salts 
Ox.  Ammon. 
Ferro-cyanide  of 
Iron. 
Bower's  Pure  
Concentrated  
Sarg's  Chetnieally  Pure  
Slightly  dis- 
colored. 
Discolored. 
Discolored. 
Discolored. 
Slightly  dis- 
colored. 
Discolored. 
No  precipitate. 
No  precipitate. 
No  precipitate. 
No  precipitate. 
No  precipitate. 
No  precipitate. 
No  precipitate. 
Slight  precipi- 
tate. 
No  precipitate. 
No  precipitate. 
White  precipi- 
tate. 
No  precipitate. 
Opalescence. 
Clear. 
Opalescence. 
Precipitate. 
Slight  precipi- 
tate. 
No  precipitate. 
BBANI>9. 
Hpdrosulph.  of 
Ammou. 
Chloride  of  Barium. 
For  Ethyl  Buty- 
rate. 
For  Sugar. 
Bower's  Pure  
Sarg's  Chemically  Pure  
Sarg's  second  quality  
De  Haen's  Chemically  Pure.. 
No  precipitate. 
No  precipitate. 
No  precipitate. 
No  precipitate. 
No  precipitate. 
Slight  precipi- 
tate. 
No  precipitate. 
Slight  precipi- 
tate. 
Precipitate. 
No  precipitate. 
Opalescent. 
No  precipitate. 
Slight  odor. 
Strong  odor. 
Slight  odor. 
Veryslightodor 
Slight  odor. 
Slight  odor. 
Free  from  sugar.. 
Free  from  sugar. 
Free  from  sugar. 
Free  from  sugar. 
Free  from  sugar. 
Free  from  sugar. 
