6 
An  Analysis  of  Cloves. 
/Am.  Jour.  Pharm. 
\    January,  1909. 
AN  ANALYSIS  OF  CLOVES. 
By  T.  R.  Hodgson,  M.A,  A.I.C. 
The  analysis  of  the  twelve  samples  of  cloves,  recorded  in  this 
paper,  appeared  to  be  of  interest,  inasmuch  as  the  number  of  analyses 
on  record  is  very  small  and  also  as  the  purity  of  the  samples  is 
undoubted.  The  moisture  in  the  samples  was  determined  by  McGill's 
method  (Canada.  Dept.  of  In.  Rev.,  Bui.  73)  by  exposing  2  grammes 
of  the  sample  over  perfectly  colorless  sulphuric  acid  in  vacuo ;  at 
the  beginning  of  the  discoloration,  the  sample  was  removed  and 
weighed,  loss  in  weight  being  due  to  moisture. 
A  
826 
per  cent. 
K  
 7.71  per  cent. 
B  
.7.99 
u 
M.  . .  . 
 7-86 
C  
.7.02 
P 
 8.23 
D  
811 
Q  
 7.90  «- 
F  
811 
a 
R 
 8.26 
H  
•7-65 
T 
 8.26 
Maximum, 
8.26 
per    cent.  ; 
minimum  7.02 
per   cent. ;  mean, 
7.95  per  cent. 
McGill  finds  the  moisture  to  be  between  5.05  per  cent,  and  11.8 
per  cent.,  while  Winton,  Ogden  and  Mitchell  give  7.03  per  cent,  to 
8.26  per  cent.  The  Ash  was  determined  as  usual  by  first  incinerating 
the  residue  obtained  from  the  moisture  determination,  over  a  naked 
flame  and  afterwards  heating  more  strongly  in  a  muffle. 
A  4.20  per  cent.  K  4.98  per  cent. 
B  5.84       "  M  6.00 
C.  6.00      "  P  4-80 
D  4-98      "  Q  5-90 
F  6.90      "  R  6.94 
H  440       "  T  445  " 
Average,  5.45  per  cent. ;  maximum,  6.94  per  cent. ;  minimum, 
4.20  per  cent. 
The  following  results  have  been  obtained  by  other  observers : 
McGill,  5.03-7.00  per  cent.;  Winton,  Ogden  and  Mitziiell,  5.28-6.22 
per  cent. ;  Raw,  6.94  per  cent. ;  Moor,  5.2-5.9  per  cent. ;  Priest,  6.0- 
6.1  per  cent. ;  Gladwyn,  5.2  per  cent. ;  Umney,  4.8  per  cent. ;  Richard- 
son, 5.50-13.05  per  cent. 
The  minimum  ash  of  these  twelve  samples  is  lower  than  any  other 
on  record. 
