576  Pure  and  Adulterated.  Oil  of  Cassia.  { 
We  now  subjoin  a  table  showing  the  pure  cassia  oils  examined 
by  us  : — 
Origin. 
Color. 
Specific 
gravity 
at  20°  C. 
Rectification- 
Eesidue. 
1.  Cassia  Oil  our  o«n  distillaO 
tion,  from  cassia  chips  (age  :  >- 
2.  Cassia  Oil  our  own  distilla- 1 
tion,  from  cassia  buds  (age :  Y 
3.  Cassia  Oil    brand    ayong ) 
(age:  60  to  80  years)  ] 
4.  Cassia    Oil    brand    ayong  \ 
5.  Cassia    Oil    brand  ayong ) 
(age  :  22  years)  j 
6.  Cassia  Oil  brand  hop  lee  a.  \ 
chip  (very  old)  J 
7.  Cassia  Oil  brand  tac  foong  \ 
Cassia  Oil  brand  ying  chong  \ 
pale  yellow 
brownish 
u 
yellow 
u 
a 
pale  yellow 
yellow 
1,035 
1,026 
1,062 
1,060 
1,060 
1,059 
1,060 
'  1,055 
5.4  per  cent,  liquid 
4.4  "      "  " 
6 
g         a         ct  a 
y         it         tt  u 
*j         a         (i  a 
5.5  "      "  " 
^      «<      <«  «< 
whereas   the   notorious  adulterated  cassia  oils  gave  the  following 
results  : — 
Origin. 
Color. 
Specific 
gravity 
at  20°  C. 
Rectification- 
Residue. 
8.  Yan  loong      (1st  lot)  
9.  "     "          (lid  "  ). 
10.  Cheong  loong  (1st    "  )  
11.  "        "       (lid  "  )  .- 
12.  "        "  (Hid") 
reddish  brown 
(( 
(( 
a 
dark  brown 
M 
1,057 
1,059 
1,056 
1,051 
1,061 
1,060 
26  per  cent.,  solid 
23  " 
9^      u         i<  a 
26  " 
33  «' 
38    "      "  " 
The  oils  12  and  13  taken  from  the  most  recent  arrivals  were  of  a 
syrup-like  consistence.  Everybody  will  agree  that  it  is  now  high 
time  to  stop  such  a  nuisance. 
After  such  results  it  will  become  of  first  necessity,  to  submit  to  a 
thorough  modification  all  the  statements  contained  in  literature  about 
the  resinification  of  cassia  oil  which,  in  closed  tins,  amounts  to  noth- 
ing. The  formation  of  a  solid  resin  as  observed  in  the  above  named 
adulterated  brands,  is  entirely  out  of  the  question. 
The  demands  to  be  met  by  a  good,  merchantable  cassia  oil,  result 
