According to A. Tschirch4), Honduras balsam, which occasionally is met with in the market, is derived from a species of Liquidambar. The properties of such a balsam were as follows"):

1) A. Tschirch and L. van Itallie who have examined Rassamala-resin have found the volatile constituents to consist of a mixture of aldehydes, presumably benzaldehyde and cinnamic aldehyde. Arch, der Pharm 239 (1901), 541.

2) Report of Schimmel & Co. April 1892, 56.

3) Ibidem. - According to a detailed investigation made by J. Moller (Pharm. Post 1898), aloe wood is odorless and develops a peculiar aroma only upon being burnt.

4) Die Harze und die Harzbehalter, 2nd ed., vol. I, p. 322. Leipzig 1906. 5) Observation made in the Laboratory of Schimmel &Co.

d15o1,0932; aD+ 6°22'; nD20o1,59407; E. V. (hot) 151,0; S. V. (cold) 163,7.

Under the heading of white Peru balsam, the Honduras balsam has been described and examined by H. Thorns and A. Biltz1), also by A. Hellstrom2). Further investigations into its composition have been made by M. Burchhardt3) and by A. Tschirch and J. O. Werdmuller4).

Upon distillation of the sample of balsam mentioned above, Schimmel & Co.5) obtained 15 to 20 p.c. of volatile oil. However, the quantity was too small to determine its constants.

According to the investigators mentioned above, the Honduras balsam contained the following volatile constituents: cinnamic acid, free and as ester, cinnamic alcohol, phenylpropyl alcohol, hydrocarbons C8H8, C5H10, C9H12 and a sesquiterpene boiling at 261 to 262°. All of these substances may be expected to occur in the oil.