CHA] 



867 



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Challis, James. 153. On the elimination of 

 errors in the microscope readings of the Mural 

 Circle of the Cambridge Observatory arising 

 from flexure of the instrument. [1856.] Gould, 

 Astron. Journ. V., 1859, pp. 27-28. 



154. Occultation of Saturn by the Moon 



on 8 May 1859, as observed at the Cambridge 

 Observatory. Astron. Soc. Month. Not. XIX., 

 1858-59, pp. 265-268. 



155. Questions in hydrodynamics. Phil. 



Mag. XVII., 1859, pp. 21-27. 



156. On the direction of the vibrations of a 



polarized ray. Phil. Mag. XVII., 1 859, pp. 102- 

 107. 



157. A proof that every equation has as 



many roots as it has dimensions. Phil. Mag. 

 XVII., 1859, pp. 112-114. 



158. Method of finding the impossible roots 



of an equation. Phil. Mag. XVII., 1859, pp. 

 283-285. 



159. A mathematical theory of heat. Phil. 

 Mag. XVII., 1859, pp. 202-209. 



160. On the theory of elliptically-polarized 

 light. Phil. Mag. XVII., 1859, pp. 285-289. 



161. On the resistance of the luminiferous 



medium to the motions of planets and comets. 

 Phil. Mag. XVII., 1859, pp. 352-356. 



162. Theoretical considerations respecting 

 the relation of pressure to density. Phil. Mag. 

 XVII., 1859, pp. 401-404. 



163. On the " loss of half an undulation " 

 in physical optics. Phil. Mag. XVIIL, 1859, 

 pp. 57-61. 



164. A mathematical theory of attractive 

 forces. Phil. Mag. XVIIL, 1859, pp. 321- 

 334. 



165. A theory of the force of Gravity. 



Phil. Mag. XVIIL, 1859, pp. 442-451. 



166. Results of Meridian-Observations of 

 the Minor Planets made at the Cambridge Ob- 

 servatory in the year 1854. Astr. Nachr. LIII., 

 1860, col. 231-240. 



167. Observations of Comets, made at the 

 Cambridge Observatory. Astr. Nachr. LIII., 

 1860, col. 341-342. 



168. On the possibility of finding a root, 



real or imaginary, of every equation. Phil. Mag. 



XIX., 1860, pp. 46-48. 

 169. A theory of molecular forces. Phil. 



Mag. XIX., 1860, pp. 88-102. 

 . 170. A theory of the force of Electricity. 



Phil. Mag. XX., I860, pp. 280-290. 

 . 171. A theorv of Galvanic Force. Phil. 



Mag. XX., 1860, pp. 431-441. 

 . 172. On a photograph of the Sun, taken 



with the Northumberland Telescope of . the 



Cambridge Observatory. Astron. Soc. Month. 



Not. XXL, 1860-61, pp. 36-37. 



Challis, James. 173. Observations of Pandora, 

 and of the eighth Comet of 1858, made at 

 Cambridge. Gould, Astron. Journ. VI., 1861, 

 pp. 25-26. 



174. A theory of Magnetic Force. Phil. 



Mag. XXL, 1861, pp. 65-73, 92-107. 



175. On theories of Magnetism and other 



forces, in reply to remarks by Professor MAX- 

 WELL. Phil. Mag. XXL, 1861, pp. 250-254. 



176. On Theoretical Physics. Phil. Mag. 

 XXL, 1861, pp. 504-507. 



177. Solution of a problem in the Calculus 



of Variations. Phil. Mag. XXIL, 1861, pp. 

 108-111. 



178. Results of Meridian-Observations of 



the Minor Planets made at Cambridge, 1855- 

 58. Astr. Nachr. LVL, 1862, col. 241-254. 

 179. On the augmentation of the appa- 



rent Diameter of a Celestial Body by its Atmo- 

 spheric Refraction. Brit. Assoc. Rep. 1862 

 (pt. 2), p. 12. 



180. On the Zodiacal Light, and on shoot- 

 ing-stars. Brit. Assoc. Rep. 1862 (pt. 2), pp. 

 12-13. 



181. On the extent of the Earth's Atmo- 

 sphere. Brit. Assoc. Rep. 1862 (pt. 2), pp. 

 29-30. 



182. 

 Physics. 

 322. 



183. On the general differential equations 

 of Hydrodynamics. Phil. Mag. XXIII., 1862, 

 pp. 436-445. 



184. The mathematical theory of the Vi- 

 brations of an Elastic Fluid. Phil. Mag. XXIV., 

 1862, pp. 135-149, 291-302. 



185. On the principle of discontinuity in 



On the principles of Theoretical 

 Phil. Mag. XXIIL, 1862, pp. 313- 



solutions of problems in the Calculus of Varia- 

 tions. Phil. Mag. XXIV., ]862, pp. 196-201. 



186. Explanations of phenomena of Light 



on the hypothesis of Undulations. Phil. Mag. 

 XXIV., 1862, pp. 462-474. 



187. A theory of the Zodiacal Light. Phil. 

 Mag. XXV., 1863, pp. 117-125, 183-189. 



188. On the source and maintenance of 

 the sun's heat. Phil. Mag. XXV., 1863, pp. 

 460-467. 



189. On NEWTON'S "Foundation of all 



Philosophy." Phil. Mag. XXVL, 1863, pp. 

 280-292. * 



19O. A Theory of double Refraction. Phil. 



Mag. XXVL, 1863, pp. 466-483. 



Challis, James, and John Covch Adams. Obser- 

 vations and Elements of Faye's Comet. Astron. 

 Soc. Month. Not. VI., 1844-45, pp. 20-21. 



2. Observations and Elements of Neptune. 



Astron. Soc. Month. Not, VII., 1845-47, pp. 

 268-270. 



5 R 2 



