— 31 — 
To this must be added that Bamber's test requires much more 
exact work than Schimmel's test, and for this reason alone it is 
aheady questionable whether in the long run it will be adopted, the 
more so, as the whole apparatus is also much more complicated. 
On the other hand, it is probable that with Bamber's method 
there will just be an increase in the number of cases in which un- 
adulterated oils are considered objectionable because they do not pass 
Bamber's test^). 
Java 
Citronella oil No. i. 
Scnimmel s test 
Bamber's test 
Increase in volume 
of the cocoanut oil 
in cc. 
in % 
Passes Schimmel's test even when 
57o Russian petroleum is added 
with lo^o American petroleum 
Does not pass Schimmel's test . . 
0,2 
10 
" /o " 
Does not pass Schimmel's test . . 
0,4 
20 
„ lo^o Russian petroleum 
Passes Schimmel's test, but passes 
no longer after 5^0 Russian pe- 
0,15 
7,5 
20 7o 
Does not pass Schimmel's test . . 
0,35 
17,5 
Three other Java citronella oils showed exactl}^ the same behaviour 
towards Schimmel's test as the above. 
For this reason, we give in the following table only their behaviour 
towards Bamber's test: 
Java citronella oil 
Java citronella oil 
Java citronella oil 
No. 2 
No. 3 
No. 4 2) 
Bamber's test 
Bamber's test 
Bamber's test 
Increase in volume 
Increase 
in volume 
Increase 
in volume 
of the cocoanut oil 
of the cocoanut oil 
of the cocoanut oil 
in cc. 
in % 
in cc. 
in 7o 
in cc. • 
in 
0,1 
5 
with 10 7o American petroleum 
0,2 
10 
0,2 
10 
0,3 
15 
20^/ 
0,35 
17,5 
0,35 
17,5 
0,4 
20 
„ io7o Russian petroleum 
0,15 
7,5 
0,15 
7,5 
0,2 
10 
20^/ 
0,25 
12,5 
0,3 
15 
0,35 
17,5 
^) Comp. in the table Java oil No. 4, and Ceylon oils Nos. i and 2. 
^) It should be noted that Bamber's test shows adulteration in the oil to which 
no petroleum had been added, although it was an authentic pure oil. 
