278 
Laboratory  Notes. 
Am.  Jour.  Pharm 
June,  1887. 
The  matter  extracted  by  dilute  acid  was  6*00  per  cent,  consisting  of 
albuminoids,  calcium  oxalate,  etc. 
The  amount  of  lignin  and  incrusting  substances  dissolved  by  chlorine 
water  was  found  to  be  12*60  per  cent.  ;  the  intercellular  substances, 
(hydrocellulose,  etc.,)  amounted  to  14*10  per  cent,  and  the  cellulose 
was  20*92  per  cent. 
SUMMARY. 
Ash   907 
Moisture   66  0 
Petroleum  extract,  cacao  butter   5"32 
Ether  extract,  resin   -93 
Alcohol  (absolute)  extract:  alkaloid  *90,  coloring  matter  4*70   5-60 
Distilled  water  extract :  mucilage  5'60,  albuminoids  *70   6*30 
Dilute  soda  extract,  albuminoids   7*90 
Total  albuminoids*  by  combustion  10'92 
Dilute  acid  extract,  calcium  oxalate,  etc   6*00 
Loss  by  chlorine,  lignin,  etc   12*60 
Hydrocellulose,  etc   14' 10 
Cellulose   20'92 
95-34 
Undetermined  matter  and  loss. . .  •   4"66 
 100-00 
LABORATOKY  NOTES. 
By  Henry  Trimble. 
Read  at  the  Pharmaceutical  Meeting,  May  17th. 
In  addition  to  the  work  on  cacao  shells  by  Mr.  Clarkson  there  have 
been  examined  three  other  drugs,  in  the  form  of  powder,  by  students 
in  the  Chemical  Laboratory  during  the  past  winter  ;  the  object  being 
to  do  something  towards  establishing  standards  which  might  aid  in 
determining  the  impurity  of  a  sample  without  taking  the  time  "to  ex- 
amine the  character  of  the  adulteration,  the  results  to  be  a  guide  and 
an  addition  to  a  physical  examination,  and  not  considered  as  absolutely 
conclusive. 
Jas.  A.  Ferguson  Ph.  G.,  determined  the  amount  of  ash  in  three 
samples  of  Ceylon  cinnamon  with  the  following  results  :  No.  1,  4*00 
per  cent. ;  No.  2,  4*00  per  cent. ;  No.  3,  5'00  per  cent.  10  grams  of 
No.  1  were  exhausted  with  petroleum  spirit  in  a  continuous  extraction 
apparatus,  and  yielded  .75  per  cent,  of  a  yellowish  oleoresin,  which 
became  crystalline  and  was  almost  completely  soluble  in  95  per  cent, 
alcohol.     That  insoluble  in  petroleum  spirit  was  exhausted  in  the 
