[3] In 1845 and 1846, as honorary professor to the Horticultural Society, Solly conducted a series of experiments on the supposed influence of electricity on vegetable growth.
He was one of the promoters of the Great Exhibition of 1851, and acted as a juror; and from 9 June 1852 to 4 May 1853 he was secretary to the Society of Arts.
[3] As a genealogical and literary scholar Solly published in Notes and Queries, The Bibliographer, The Antiquary, and other periodicals.
[3] Solly collected a large library, which was rich in eighteenth-century literature; it was sold at Sotheby's, London, in November 1886.
He presented to the National Gallery, London an anonymous picture called A Venetian Painter.