[1495] In the Public Ledger, May 2, 1874, the prices are quoted thus:—Siam Gum Benjamin, 1st and 2nd qualities, £10 to £28 per cwt.; Sumatra, 1st and 2nd, £7 10s. to £12.
[1496] There were 8 cases of this drug offered at Public Sale, 13 April 1871.
[1497] Prod. Floræ Sumatranæ, 1860. 474.
[1498] Löwe (1870) and Rump (1878) attempted to prove that the acid is partly present in the form of a compound, but they have not shown with which substance it is combined in the drug.
[1499] Blue Book for the Colony of the Straits Settlements, Singapore, 1872.
[1500] Consular Reports, August 1873. 953.
[1501] Statement of the Trade and Navigation of the Presidency of Bombay for 1871-72, pt. ii. 26. 79.
[1502] Fraxinus Bungeana DC., a tree of Northern China, appears to be hardly distinct from F. Ornus.
[1503] Hanbury, Historical Notes on Manna, Pharm. Journ. xi. (1870) 326; or Science Papers, 355.
[1504] Commentarii Urbani, Paris, 1515. lib. 38. f. 413.