W. and S. Jones, [Advertisement:] ‘To Philosophical Professors, Lecturers in Philosophy, and Private Students’

W. and S. JONES most respectfully inform the above professional Gentlemen, as also the Readers of this Work, that they are accustomed to manufacture and supply, upon the most reasonable Terms, Collections of Philosophical Instruments, Machines, Models, &c. according to the Figures and Descriptions given in these Lectures, by the late Mr. Adams, and other eminent Writers on Experimental Philosophy, &c. and from several Improvements and Contrivances made by themselves. All the Instruments are of the best Workmanship, and are constructed as precisely as possible according to their respective Theories. Their Accuracy and Elegance are in Proportion to the Price or Sum of Money allowed.