MISCELLANY. 
83 
the question, placed a paper covered with writing in English ink be- 
tween two plates of copper. After a short space of time he found that 
the copper had decomposed the ink, and that the writing was completely 
effaced. He concluded that the account of the Hindoo was correct; and 
that the bank ought not to refuse payment. 
Asiat. Soc. Journ. and Bee. of Science. 
Volatile oils. — Volter and Darrn have made a set of experiments to de- 
termine the relative produce of oils to the raw material employed. The 
following is the result. 
We use the German measuies, which approach nearly our own, the 
Nuremberg pound being equal to .959266 pound Troy, the lb. or civil 
pound consisting of 16 ounces. Multiplication by this number gives the 
equivalent in English. 
1. Oil of Miter almonds. — 26 pounds of almonds, pressed cold, and then 
distilled with water, gave 10^ pounds of fat, and two ounces of volatile 
oils. 
2. 01. anisi aeth.~l6 lbs. of anise seeds gave 9 ounces of volatile oil 
and 10 lbs. 2^ oz. of the same, spec. grav. 0.984. 
3. 01. anisi stellati. — 10 lbs. of the seeds gave 22 drs. volatile oil. 
4. 01, calami aromat. — 14 lbs. of dry roots left 20 oz. volatile oil, 
118 lbs. fresh roots were peeled and the 25 lbs. of bark left by distillation 
3J oz. of oil; the roots when dried weighed 13^ lbs. 
5. 01. carvi. — 15 lbs of the seeds gave 7 oz. of oil, 10 lbs. gave 9 oz. 
of spec. grav. 915. 
6. 01. caryophyl. aromat. — 1 lb. gave 20 to 21 drs. 
7. 01. caryophyl. — 6^ lbs. when distilled three times gave 18^ oz. oil of 
spec. grav. 1.232. 
8. 01. cerae. — 1^ lb. cer. Jiav. gave by dry distillation, 5 oz. 5 drs. of 
oil. 
9. 01. coriandri. — 32 lbs. of the seeds gave 2 oz. 9 drs. oil. 
10. 01. cynsRsem. — 165 lbs. of the seeds left 14 oz. 3 drs. oil. 
11. 01. cynse. — 5 lbs. seeds of cyn. levant, gave 4 drs. 1 scr. oil, ^ lb. 
seeds of cyn. lev. gave 10 drs. ext. cyn. aeth ; 2^\hs. sem. cyn. barb, gave 
3 drs. 50 grs. oil. 13 lbs. sem. cyn. natur. left 2f lbs. of an earthy pow- 
der effervescing with acids. 
12. 01. Fieniculi. — 12 lbs. seeds gave 5 drs. oil, 3 lbs. seeds gave 
14^ drs. oil, spec. grav. 0.968. 
13. 01. junip. bucc. — 21 lbs. of fresh berries left 26 drs. clear oil. 
14. 01. macis. — 1^ lb. mace gave 18^ drs. oil, of spec. grav. .920. 
15. 01. marjoranse. — 82 lbs. left 11 oz. oil. 
16. 01. menth. piperit. — 374 lbs. of the plant gave 49^ oz. 
17. 01. petroselini. — 4 lbs. seeds afford 1^ oz. of an oil sinking to the 
bottom of water. 
