II. Index of Subjects, 419 



Object-Glass, with triangular aperture, Diffraction in: Dec. 12, 1836; vi. 

 431—442. 



Achromatic, Correction for: Apr. 30, 1838; vi. 553 — 564. 



Observatory at Cambridge, Longitude of: Nov. 24, 1828; iii. 155 — 170. 

 • Ditto, Latitude of: Apr. 14, 1834; v. 271—281. 



Ditto, Longitude of, by Galvanic Signals : May 15, 1854 ; 



IX. 487—514. 



Odyssey, see Iliad. 



Onymatic System, on various points of: May 4, 1863; x. 428 — 487. 



Optical Elasticity, Axes of in certain Crystals : Dec. 8, 1834 ; v. 431 — 438. 



Ditto, Ditto, (second memoir) : March 21, 1836 ; vii. 209 — 215. 



Orbits of great Excentricity, Position of their Apsides: Apr. 17, 1820; I. 



179—191. 

 Ordnance, Strains upon: Apr. 18, 1864; xl. 324 — 359. 

 Ornithology of Cambridgeshire : Nov. 28, 1825; ii. 287 — 324. 

 Oscillations, on small Finite : May 15, 1843 ; viii. 89—104. 



of a suspension Chain: Dec. 8, 1851; ix. 379 — 398. 



Oscillatory Waves, Theory of: March 1, 1847; viii. 441 — 455. 



Parallelogram of Forces: New Demonstration of: Apr. 14, 1823; ii. 45 — 46. 

 Partial differential Equations, Method of integrating: June 5, 1848; viil. 



606—613. 

 Pendulum, Correction of, by a Ball suspended by a wire: Nov. 16, 1829; iii. 



355—360. 

 Pendulums, Disturbances of: Nov. 26, 1826; iii. 105—128. 



Effect of Internal Friction on : Dec. 9, 1850 ; ix. [8—106.] 



Percussion, Experiments on: 1825; ii. 444. 



Periodic Series, Critical Values of: Dec. 6, 1847; viii. 533 — 583. 



Perpetual Motion, How possible : Dec. 14, 1829 ; iii. 369 — 372. 



Perspective, Isometrical: Feb. 21, Mar. 6, 1820; i. 1 — 19. 



Philosophy, Fundamental Antithesis of: Feb. 5, 1844; vrii. 170 — 181. 



• — — Second memoir : Nov. 13, 1848; vm. 614—620. 



Phosphate of Copper from the Khine : March 5, 1821 ; i. 203 — 207. 



Physical Geology, Researches in : May 4, 1835 ; vi. 1 — 84. 



Piscidium, see Cyclas. 



Piscium Maderensium Species, &c., &c. : Nov. 10, 1834; vi. 195 — 201. 



Planets, see Earth. 



Plato's Survey of the Sciences : Apr. 23, 1855 ; ix. 582 — 589. 



Notion of Dialectic : May 7, 1855 ; ix. 590 — 597. 



Ditto, of the Intellectual Powers : Nov. 12, 1855 ; ix. 598 — 604. 



Genuineness of the Sophista of: Nov. 23, 1857; x. 146 — 165. 



Cosmical system: Feb. 28, 1859; x. 305—316. 



Platonic Theory of Ideas: Nov. 10, 1856; x. 94—104. 



Plumbago, on the artificial formation of: Feb. 21, 1825; ii. 441 — 443. 



Polarity, Organic: March 8, 1858; x. 248—260. 



Polarization, Use of a new Analyzer in : March 5, 1832; iv. 313 — 322. 



