Am.  Jour.  Pharm.  \ 
January,  1909.  j 
An  Analysis  of  Cloves'. 
/ 
The  method  used  for  the  determination  of  the  Alcoholic  Extract 
was  that  due  to  Winton,  Ogden  and  Mitchell  (U.  S.  Dept.  of  Agric, 
Bur.  of  Chem.,  Bui.  65),  2  grammes  of  the  powdered  sample  being 
extracted  with  100  c.c.  of  95  per  cent,  alcohol  with  continuous 
shaking  for  eight  hours  and  then  being  allowed  to  stand  for  sixteen 
hours;  after  having  been  shaken  and  allowed  to  stand  for  the  re- 
quired time,  it  is  filtered  and  50  c.c.  are  evaporated  to  dryness  and 
the  residue  heated  at  no°  C.  until  constant. 
A  14.90  per  cent.  K  13-80  per  cent. 
B  ..1345      "  M  1345      "    •  . 
C.  11.98      "  P  11.55 
D-  •  •  n-55      "  Q  11-55 
-     F  12.63      "  R  1345 
H  12.50      "  T  12.70  " 
Maximum,  14.90  per  cent.;  minimum,  11.55  Per  cent.;  average, 
12.79  Per  cent. 
Winton,  Ogden  and  Mitchell  give  an  Alcoholic  Extract  of  from 
13.99  t°  I5-58J  which  is  higher  than  those  recorded  above.  In  the 
determination  of  the  Crude  Fibre,  2  grammes  of  the  substance  were 
first  extracted  with  ether  and  afterwards  boiled  successively  with 
acid  and  alkali,  the  Crude  Fibre,  after  boiling  with  the  alkaline  solu- 
tion, being  separated  by  means  of  a  centrifuge. 
A   9.75  per  cent.  K   9.62  per  cent. 
B  10.35       "  M  10.20  " 
C   9.90     .  "  P   9.99 
D.  ..  10.55       "  Q  10.11 
-    F   975       "  R   9-87  " 
H   9.50      "  T  10.43 
Maximum,  10.55  Per  cent. ;  minimum,  9.50  per  cent. ;  average, 
10.00  per  cent. 
Winton,  Ogden  and  Mitchell  obtained  from  7.06  per  cent,  to  9.02 
per  cent,  of  Crude  Fibre,  which  is  considerably  lower  than  that  shown 
by  any  of  the  above  samples. 
The  Nitrogen  was  determined  as  usual  by  Kjeldahl's  method,  the 
factor  6.33  being  used  to  convert  the  Nitrogen  into  Albuminoids. 
Nitrogen.  Albuminoids. 
A  0.91  per  cent.  5.76  per  cent. 
B  ......0.91       "  576 
C  0.95      "  6.01 
D  m  0.94     "  5-94 
