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A letter most humbly addressed to Doctor Maskelyne, Astronomer Royal, & F.R.S. on the discovery of a new reflecting telescope
By Samuel Francis, Philomath -
A sketch of opticks
displaying the wonders of sight and manner of vision: The Cartesian and Newtonian Theories of Light: Ideas of a newly created Man: The Astonishing Appearances produced by plane Looking Glasses; Concave and Convex Mirrours, and Multiplying Glasses: The different refrangibility of the Rays of Light, and the Nature of Colours: The amazing burning Property of Lenticular Glasses, and reflecting Mirrours: With a Description of the Mirrour, whereby Archimedes burnt the Roman Fleet: A beautiful Aerial Scene described and accounted for: The Construction of Miscroscopes: Demonstrations of the Equality of the Angles of Incidence and Reflection, by easy Experiments. Remarks on Mr. Finny's Demonstration, &c. Wherein Some Mistakes of his are corrected, particularly his Misconception of Doctor Berkley's Definition of Tangible Objects and their Representatives. By John Donovan, P. M. Topographer, Practical Land-Surveyor & Diallist. Price---A British Sixpence -
Dr. Gregory's Elements of catoptrics and dioptrics
To which is added, I. A method for finding the foci of all Specula as well as Lens's universally. As also for Magnifying or Lessening a given Object by a given Speculum or Lens in any assign'd Proportion, &c. II. A solution of those problems which are left undemonstrated. III. A particular account of microscopes and telescopes, from Mr. Huygens. With an introduction shewing the Discoveries made by Catoptrics and Dioptrics. By W. Browne, A. M. & Med. Pract -
Dr. Gregory's Elements of catoptrics and dioptrics
Translated from the Latin original, with a large supplement, by William Browne, M. D. To which is added, An Appendix, By J. T. Desaguliers, LL. D. F. R. S. containing, An Account of the Reflecting Telescopes; and of the Inventors, Improvers, and Imitators of them, till they were brought to Perfection by John Hadley, Esq; Vice-President of the Royal Society. With Original Letters which passed between Sir Isaac Newton and Dr. James Gregory, relating thereunto. Now First Published