Am,  Jour  Pharm.  "I 
^July  1, 1871.  J 
Gordons  Qlycerin. 
301 
on  the  subject  at  the  next  meeting  of  the  American  Pharmaceutical 
Association,  the  writer  was  led  to  seek  for  additional  samples. 
And,  at  the  instigation  of  a  member  in  Cincinnati,  two  samples 
taken  from  the  common  market  were  obtained,  bearing  the  name  and 
stamp  of  Wm.  J.  M.  Gordon.  It  was  ascertained  that  these  were 
made  very  recently,  and  had  but  lately  arrived  from  Cincinnati. 
They  were  subjected  to  an  examination,  conducted  in  the  same 
manner  and  with  the  same  reagents  used  in  the  investigation  reported 
at  the  last  meeting  in  Baltimore,  in  1870,  and  published  in  the  Pro- 
•ceedings  of  the  Association,  Vol.  18,  page  187,  and  republished  in 
this  journal,  March  number,  1871,  page  119. 
It  will  be  seen  by  a  perusal  of  the  table  below  that  there  is  a  great 
difference  in  the  quality  of  the  samples  of  glycerin  taken  now  and 
then : 
-Gordon's  Pure  Inodo- 
rous, testfed  1871  
Gordon's  Pure  Con- 
centrated, tested  '71 
Gordon's  Pure,  tested 
1870  
For 
Strength, 
Sp.  Gr. 
Color. 
Odor  when 
warmed. 
Nit.  Silver. 
Sulphuric 
Acid. 
For 
Sulphate 
of  Lime. 
1-253 
1-249 
1.240 
None. 
Not  quite 
colorless. 
Yellowish. 
None. 
Slight. 
Fatty. 
No 
precipitate. 
Rose 
coloration. 
Heavy  white 
precipitate. 
Slightly 
discolored. 
Slightly 
discolored. 
Discolored. 
No 
precipitate. 
No 
precipitate. 
No 
precipitate. 
Gordon's  Pure  Inodo- 
rous, tested  1871  
Gordon's  Pure  Con- 
centrated,tested  '71 
Gordon's  Pure,  tested 
1870  
For  Lime 
Salts,  Ox- 
Aramon. 
For  Iron, 
Ferrocya- 
nide  Pot- 
assium. 
For  Metals, 
Hydrosul- 
phate  Am- 
monia. 
For  Sulph- 
ates, Chi  or. 
Barium. 
For 
Ethyl- 
Butyrate. 
For 
Glucose. 
No 
precipitate. 
No 
precipitate. 
Slight 
precipitate. 
No 
precipitate. 
No 
precipitate. 
No 
precipitate. 
No 
precipitate. 
No 
precipitate. 
No 
precipitate. 
No 
precipitate. 
No 
precipitate. 
Slight 
precipitate. 
Slight 
odor. 
Slight 
odor, 
strong 
odor. 
None. 
None. 
None. 
In  the  course  of  correspondence  with  the  manufacturer,  the  differ- 
ence in  the  quality  of  the  samples  tested  was  accounted  for  by  the  fact 
of  my  obtaining  a  sample  which  had  been  made  probably  several  years 
ago,  and  that  recently  there  have  been  great  improvements  made  in 
the  manufacture  of  glycerin,  and  he  was  turning  out  now  a  glycerin 
that  would  compare  more  favorably. 
It  is  hardly  necessary  for  me  to  say  that  the  results  have  verified 
his  supposition,  and  it  is  but  right  that  he  should  have  the  benefit  of 
the  examination,  whatever  that  may  be. 
It  is  a  source  of  pleasure  to  present  the  results  above,  and  additional 
testimony  is  thus  given  to  show  that  we  need  not  seek  foreign  mar- 
kets for  fine  glycerin,  but  it  is  also  a  source  of  regret  to  know  that 
