192 CATALOGUE. PHILOSOPHY AND ARTS, PRACTICAL MECHANICS. 



Leroy's clock with one wheel ia each part. 



A. P. 1755. H. 140. 

 Leroy's night watch. A. P. 1761. H. 157. 

 Leroy's simplified watches. A. P. 17G3. 420. 



H. 127. 

 Leroy's marine watches. A. P. 17^7. H. 



125. 

 Cassini on Leroy's watches. A. P. 1769. H. 



102. 

 Voyage pour eprouver les montres de Leroy. 



4. Paris. R. S. 



His watches determined the longitude within 15' after 

 six weeks. 



Collier's repeating clock. A. P. 1728. H. 110. 



Mach. A. V. 75. 77. 

 Dutertre's marine clock with a double pen- 

 dulum. Mach. A. V. 79. 

 Outhiei's spring clocks. Mach. A. VL C)5. 

 Largay's repeating clock. A. P. 1734. H. IO6. 



Mach A. VL 191. 

 Thiout's repeating watch and clock. A. P. 



1737. H. 107. Mach. A. VIL 61. 

 Gallonde's clock with few wheels. A. P. 1740. 



H. 110. Mach. A. VIL 79. 

 Gourdain's portable watch and clock without 



fusee. A. P. 1742. H. 161. Mach. A. VIL 



147. 

 Gourdain's half minute watch for the log. A. 



P. 1743. H. 172. Mach. A. VIL 217. 

 Jodin's watch with two balances. A. P. 1754. 



H. 140. 

 Charmy's clock. A. P. 1754. H. 141. 

 Mesurier's clock resembling Leroy's. A. P. 



1755. H. 141. -^ 



Romilly's watch. A. P. 1755. H. 143. 

 Ridreaut's repeating clock. A. P. 1756. H. 



131. 1758. H. 103. 

 Clock. Emerson's mech. F. 302, 303. 

 Mason on the rate of Ellicott's clock. Ph. tr. 



1762, 534. 



Millot's half second clock. A. P. 1762. H. 

 139. 190. 



Lespine's repeating watch. A. P. 1763. H. 

 140. 



Biesta's watches. A. P. 1764. H. 182. 



Coupson's watch without a fusee. A. P. 1764. 

 H. 183. 



Nioux's watches. A. P. 1764. H. 183. 



Tosembach's striking watch of 26 pieces. A. 

 P. 1769. H. 128. 



Franklin's clock with three wheels and two 

 pinions. Ferguson's mech. e.\erc. 1. Ano- 

 ther similar clock. 4. 



Wollaston on the rate of a clock of Holmes. 



Ph.tr. 1771. 559. 1773.67. 1775.290. 



It varied but 2" or 3" a day for a whole year. 

 Ferin's watches. A. P. 1772. i. 

 Robin's clock. A. P. 1778. H. 56." 

 Robin on turret clocks. Roz. XXXII. 45. 

 Magellan's clock. Roz. XVII. 283. 

 Hill's repeating timepiece. Bailey's mach. 



\l.63. 



With large plates. 



Fleuiku Voyage pour eprouver les horloges de 

 Berthoud. 4. R. S. 



Count de Bruhl's registers of a watch. 4. R. S. 



Sampson's chime clock. S. A. IV. 177. 



Maskelyne on Mudge's timekeepers. 8. Lond. 

 1792. R. S. 



Leslie's patent nautical watch. Repert. 11. 91. 



Henry's sentinel register. Repert. V.32. 



Haley's patent timekeeper. Repert. VI. 145. 



Desaguliers's chronometer. Enc. Br. Art. 

 Chronometer. 



Day's patent noctuary for a watchman. Nich. 

 8. V. 133. Repert. ii. III. l6l. 



Marquis of Exeter on a timepiece for regis- 

 tering the attendance of a watchman. 

 Nich. 8. V. 158. 



Clock. Imison's elements. L pi. 5. 



