Note 521 — I.—PHÆNOGAMOUS OR FLOWERING PLANTS. (continued 4)

On the Genus Boswellia, with descriptions and figures of three new species.—Linn. Trans. xxvii. (1870) 111. 148. This paper is reprinted as an appendix to Cooke’s “Report on the gums, resins, ... of the Indian Museum,” Lond. 1874.—The original plates are much superior and more complete than the reprints.—The materials on which Dr. Birdwood’s observations have been chiefly founded, and to which we also have had access, are,—1. Specimens collected during an expedition to the Somali Coast made by Col. Playfair in 1862.—2. Growing Plants at Bombay and Aden, raised from cuttings sent by Playfair.—3. A specimen obtained by H. J. Carter in 1846, near Ras Fartak, on the south-east coast of Arabia, and still growing in Victoria Gardens, Bombay; and figured by Carter in Journ. of Bombay Branch of R. Asiatic Soc. ii. (1848) 380, tab. 23.