The prospectus of the Dictionary he addressed to the earl of Chesterfield.
In 1786, supported also by such scholars as Benjamin Kennicott and Robert Lowth, Geddes published a Prospectus of a new Translation of the Holy Bible, a considerable quarto volume, in which the defects of previous translations were fully pointed out, and the means indicated by which these might be removed.
In 1747 Johnson sent Chesterfield, who was then secretary of state, a prospectus of his Dictionary, which was acknowledged by a subscription of X10.
Shortly afterwards (1860) he sent out the prospectus of a systematic exposition of his Synthetic Philosophy, of which the first volume, First Principles, appeared in 1862.
The prospectus promised to give an account of the chief books published throughout Europe, obituary notices, a review of the progress of science, besides legal and ecclesiastical information and other matters of interest to cultivated persons.