From the bark which is exported from Dutch East India under the name of Lawang, E.W.Mann4) obtained 0,5 p.c. of an oil the odor of which reminded one of nutmeg, sassafras and cloves, and which had the following properties: d15,5o1,0104; aD20o - 6,97°; nD20o1,5095; A.V. 1,15; E. V. 4178, S. V. after acetylation 121,91; soluble in 2 vol. of 80 p.c. alcohol. When heated with metallic sodium, the oil reacted violently, forming a semisolid mass. Extracted with ether it yielded a substance which became blue on exposure to air. The portion insoluble in ether was readily soluble in water. Upon acidulation of the aqueous solution a white substance was precipitated which melted at 51 to 52° after recrystallization from alcohol. The nature of this substance is still unknown.
1) The Oriental Druggist 1 (1906), Mo. 3, Yokohama; Report of Schimmel & Co. April 1907, 28.
2) Report of Schimmel & Co. October 1907, 34.
3) Verslag 's Lands plantentuin te Buitenzorg 1895, 39. The question mark after the botanical name presumably indicates that the botanical origin of the plant has not been definitely ascertained.
4) Pharmaceutical Journ. 89 (1912), 145.
As to the botanical origin of the bark, Mann makes no definite statements. He records that, as Holmes supposes, it is probably derived from a species of Cinnamomum or Litsea. Schimmel & Co.1), suspected that Cinnamomum iners, Reinw. might be the source, since de Clercq2) records the Malay name Lawang for this plant.
This supposition, however, has not been verified by the botanical-pharmacognostical examination of the bark. Although its origin from a species of Cinnamomum may be regarded as established, the arrangement of the stone cells would seem to indicate some other species than C iners.