About the same time he wrote for the Cabinet Cyclopaedia a "History of England from the Earliest Times to the Final Establishment of the Reformation."
This work was a commission from Lardner's Cabinet Cyclopaedia, and was originally intended to have been condensed into two or three duodecimo volumes.
Dr Smith contributed articles on Calvin, Kant, Pantheism, Miracles, Reformed Churches, Schelling and Hegel to the American Cyclopaedia, and contributed to McClintock and Strong's Cyclopaedia; and was editor of the American Theological Review (1859 sqq.), both in its original form and after it became the American Presbyterian and Theological Review and, later, the Presbyterian Quarterly and Princeton Review.
On Jewish and Mahommedan legends, see Jewish Cyclopaedia, " Adam."
He was also the author of the articles on astronomy in the American Cyclopaedia and the ninth edition of the Encyclopaedia Britannica, and was well known as a popular lecturer on astronomy in England, America and Australia.