Textbooks by Alexander Jamieson owned by the Ruskins—See Dearden, Library of John Ruskin, 183 (no. 1405). Deardenʼs identification is predicated on an entry, “Jamieson 6/6”, for 14 May 1835 in John James Ruskinʼs Account Book (39v), an entry that, as Van Akin Burd admits, could apply, not just to various works by Alexander Jamieson but also to works by the geologist Robert Jamieson (1774–1854). See Ruskin Family Letters, ed. Burd, 300–301 n. 12; see also Ridpath, “Celestial Atlas by Alexander Jamieson”. Identification of this item recorded in in John Jamesʼs accounts as a textbook by Alexander Jamieson is unclear, therefore, although Dearden correlates this item with a gift to the Working Menʼs College in 1858.

Ruskinʼs poem does not contain the most telltale signs that would clench his use of the Celestial Atlas—namely, his listing of constellations that are original and unique to Jamieson, such as Noctua (the Owl), Solarium (the Sundial), and Norma Nilotica (the Nilometer, a rod for measuring the depth of the Nile, wielded by Aquarius). Ruskinʼs poem omits even Aquarius, much less Aquariusʼs Nilometer. The poem may, however, contain some subtler, if not positive evidence pointing to the Celestial Atlas as a source: see, for example, the contextual glosses attached to Musca, or “the little fly“ and Apis, or “the armed bee“ in the poem.