of a Place by Observations of the Pole-Star, 45] 
Tas_e II, 
Corrections of B and C. 
Argument = Multiplier of 
N.P.D. of the 
Pole-Star. B Cc 
1.37.50" | 997 
40 | +993 
30 ‘990 
20 “O86 
10 “983 
137.19 “980 
1.36, 50 ‘976 
40 ‘973 
30 “970 
20 966 
10 963 
1.36. 0 “960 
1.35. 50 957 
40 953 
30 *950 
20 “946 
10 943 
1.35. 0 *940 
XCII. Experiments on the Combination of Acetic Acid and Al- 
cohol with volatile Oils. By M. Vauaug.in*, 
| Exp. 1.—Eicury parts of volatile oil of lavender were mixed 
with 80 parts of acetic acid; the areometer at 10°. After 
shaking the mixture smartly for a considerable time to perfect 
the union of the two liquids, it was left to settle. » When again 
examined and separated, the oil was found to occupy 125 parts, 
and the acid only occupied 35; the latter had therefore lost 45 
parts, and the oil had acquired 45 parts. 
Exp. 2.—Eighty parts of the same oil were joined to the 
35 parts of acetic acid remaining, and after mixing and sepa- 
rating as in the preceding experiment, the oil was found to oc-. 
eupy 115 parts, and the acid was reduced to 5: so that this 
time the 80 parts of oil absorbed only 30 parts of acid. 
* From the Annales de Chimie for March 1822, 
ok 2 I think 
