or Diana's Shoal, a small sandy islet in the Indian Sea, scarcely visible from the masthead, its situation lying so low. Long. 151. 5. E. Lat. 15. 45. S.

DIANÆ ARBOR, or ARBORE LUNÆ, in Chemistry, the beautiful arborescent form of silver, dissolved in nitric acid, and precipitated by another metal; so called from its resembling the trunk, branches, and leaves of a tree.