54 Bappicker—On the Influence of Magnetism on the Rate of a Chronometer. 
16.—Abpranam : 
[Moyen de neutraliser le magnétisme du balancier et des autres piéces d’acier des ouvrages 
@horlogerie.] — Society for the Encouragement of Arts, vol. xliv., and Technical Repository, 
March, 1827, p. 140. é 
Abstract by Chevy . . . t in Bulletin des Sciences technologiques, rédigé par 
M. Dubruntant, cinquiéme section du Bulletin Universel des Sciences et de l’ Industrie, 
publié sous la direction de M. le B™ De Férussac, tome huitiéme, p, 58. Paris, 1827. 
17.—Arnoup anp Dent: 
‘Magnetic Hxperiments on Chronometers.” [Dated, April 11, 1888.] — The Nautical 
Magazine and Naval Chronicle, vol. ii., p. 262, ff. 
18.—S. G. Norrucore : 
(Table).—Nautical Magazine, 1837, pp. 164, 165. 
An Appendix to the following No. 19. 
19.—Grorce FisHer : 
“Effects of Magnetism on the Rates of Chronometers.’’ [Dated, July 10, 1836.]— The 
Nautical Magazine, 1837, p. 160. 
Mentioned in Henry Raper, ‘‘The Practice of Navigation,” p. 174, 10th ed., 1870. 
20.—Rosert Frrz Roy: 
‘Narrative of the Surveying Voyages of His Majesty’s Ships ‘ Adventure’ and ‘Beagle’ 
between the years 1826 and 1830,” &c. Appendix to vol. ii., pp. 826, 827, 845, 346. 
London, 1889. 
21.—A. Grvry: 
‘‘Memoire sur les montres marines et sur les principales observations de 1’astronomie 
nautique,” &¢.— Annales maritimes et coloniales, &e., par M. Bajot et M. Poirrée. 
Vingt cimquiéme année, seconde série, partie non officielle, tome i., pp. 758, seq. 
1840. 
22\—G. BB, Ary: 
‘*Maenetism of Chronometers.” [Dated, February 22, 1840.]— The Nautical Magazine, 
1840, p. 231. 
An Abstract is given by Ellis in The Horological Journal, &c., vol. viii., pp. 
90, seq. April 1, 1866. 
23,—Povult1et : 
‘‘Eiléments de Physique expérimentale et de Météorologie,”’ vol. i., septiéme edition, p. 425. 
Paris, 1856. 
Reproduced after the 6th edition by Ansart-Deusy (cf. No. 25). 
24,—E. Moucusz: 
‘Observations chronométriques faites pendant la Campagne de Circumnayigation de la 
Corvette ‘La Capricieuse,’’’ &c.—Publié sous le ministére de 8. E. l’Amiral Hamelin, 
&e., p. 19. Paris, 1855, 
In this brochure the criticism of Lesquen de la Menardais’s Paper is given. 
