100 Catalogue of the Works of Dr. Young. 



and Arts, about twenty pages of Astronomical and Nautical Collections, 

 beginning in 1820; the greater part either original or translated by himself. 



Appendix to the second edition of Belzoni's Travels, 4to. London, 1821. 



Elementary Illustration of the Celestial Mechanics of La- 

 place, 8vo. London j 1821 ; with some additions relating to the Motions 

 of Waves, and of Sound, and to the cohesion of Fluids. (This volume, 

 and the article " Tides," in the supplement to the Encyclopaedia Bri- 

 lannica, Dr. Young considered as together containing the most fortunate of 

 the results of his mathematical labours.) 



An Account of some recent Discoveries in Hieroglyphical Lite- 

 rature and Egyptian Antiquities, including the author's original 

 Alphabet, as extended by M. Champollion, 8vo. London, 1823; with a 

 translation of some Greek Manuscripts on Papyrus, the most remarkable 

 of which was Mr. Grey's " Antigraph" of an Egyptian original then lying 

 on bistable; the discovery of which singular coincidence was the imme- 

 diate cause of the publication of the volume. 



Hieroglyphics, collected by the Egyptian Society, folio. London, 1823 — 

 a collection of Plates of Egyptian Antiquities subservient to the study of 

 Hieroglyphical Literature, lithographized at the expense of about fifty sub- 

 scribers, but not at that time publicly sold. The second number, plates 

 16 to 40, contains nearly all that was known of the interpretation of the 

 Hieroglyphics, the evidence for each word being exhibited in a comparative 

 Index. 



(This work was entirely carried on by Dr. Young ; but the subscriptions 

 not being adequate to the expenses, it was afterwards made over to the 

 Royal Society of Literature, he undertaking to continue the supervision as 

 before.) 



A finite and exact Expression for the Refraction of an Atmosphere nearly 

 resembling that of the Earth. Phil. Trans. 1824, p. 159; a computation 

 derived from an optical hypothesis not exactly agreeing with the probable 

 height of the physical atmosphere, but affording correct results. 



Remarks on Spohn and SeyfTarth. Quarterly Journal, Oct. 1826, in a 

 Letter addressed to the Baron William von Humboldt. 



A Formula for expressing the Decrement of Human Life; in a Letter 

 addressed to Sir Edward Hyde East, Bart. Phil. Trans. 1826, intended to 

 render the interpolation from the best observations more regular : it is fol- 

 lowed by a correction of Dr. Price's mistake, respecting the periodical pay- 

 ments of annuities. 



Practical Application of the Doctrine of Chances, as it regards the sub- 

 division of Risks. Quarterly Journal, Oct. 1826; showing the limitations 

 under which speculations on probabilities may be conducted with prudence. 



Remarks on Mr. Peyron's Account of the Egyptian Papyrus. Quarterly 

 Journal, Jan. 1827 — the great Greek Papyrus of Turin : in which Mr. Grey's 

 three contracts are cited and explained,— not two of them only, as had been 

 supposed by Mr. Peyron. . 



