622 



INDEX. 



NAPIER (MACVEY), remarks illustrative of the 

 scope and influence of the philosophical writings of 

 Lord Bacon, viii. 373. 



NATURAL BODIES, on the colour of. xii. 538. 



NECKER (L. A.), honorary professor of mineralogy, 

 Geneva, on the determination of the position of 

 strata in stratified rocks, xii. 363. 



NEILL, LL.D. (PATRICK), notice respecting a re- 

 markable shower of hail, which fell in Orkney the 

 24th July 1818. ix. 187. 



NICE, sketch of the geology of the environs of, 

 viii. 427. 



NOUNS and ADJECTIVES, on the force of the 

 Latin prefix vse or ve, in the composition of. xiii. 63. 



OBELISK, account of the erection of a granite obe- 

 lisk of a single stone, about seventy feet high, at 

 Seringapatam. ix. 307. 



OBSERVATORY, notice of a new observatory at 

 Aberdeen. H. iv. 19. 



OLDENLANDIA UMBELLATA, method of culti- 

 vating the. H. iii. 16. 



OPIUM, experiments on the effects of. H. iv. 18. 



OTTER OF ROSES, method of making the, as it is 

 prepared in the East Indies. P. C. ii. 12. 



PANTOGRAPH, account of the invention of the. 

 xiii. 418. 



PEAT-MOSSES, account of the, of Kincardine and 

 Flanders, in Perthshire. P. C. iii. 266. 



PENDULUMS, researches on the vibrations of, in 

 fluid media, xiii. 54. 



PERTH, concerning the Chartreuse of. H. v. 25. 



PETROLEUM OF RANGOON, chemical examina- 

 tion of the, xiii, 118. 



on the composition of the, with remarks on 



petroleum and naphtha in general, xiii. 124. 



PHOLAS, observations on two species of, found on 

 the sea coast in the neighbourhood of Edinburgh. 

 x. 428. 

 t PHOTOMETER, on a new, founded on the principles 

 of Bouguer. x. 443. 



PITCAITHLY, analysis of the mineral waters of. 

 vii. 445. 



PLAYFAIR (PROFESSOR JOHN), on the causes 

 which affect the accuracy of barometrical measure- 

 ments. P. C. i. 87. 



remarks on the astronomy of the Brahmins. 



P. C. ii. 135. 



observations on the trigonometrical tables of 



the Brahmins. P. C. iv. 83. 



on the origin and investigation of porisms. 



P. C. iii. 154. 

 investigation of theorems relating to the figure 



of the earth, v. 3. 

 of the diurnal variations of the barometer. 



H. v,3. 



- phenomenon of two rainbows intersecting one 



another. H. v. 8. 



PLAYFAIR (PROFESSOR JOHN), biographical 

 account of Dr James Hutton. H. v. 30. 



of the solids of greatest attraction, vi. 187. 



■ on the progress of heat, when communicated 



to spherical bodies from their centres, vi. 353. 



account of the structure of table mountains, 



and other parts of the peninsula of the Cape, 

 viii. 269. 



biographical account of the late John Robison, 



LL.D., &c. vii. 495. 



memoir relating to the naval tactics of the late 



John Clerk of Eldin. ix. 113. 



POLARIZATION, on circular, as exhibited in the 

 optical structure of the amethyst, ix. 139. 



POLYZONAL LENSES, on the construction of, and 

 their combination with plain mirrors, for the pur- 

 poses of illumination in lighthouses, xi. 33. 



PORISMS, on the origin and investigation of. P. C. 

 iv. 107. 



■ some geometrical, with examples of their ap- 

 plication to the solution of problems. P. C. iv. 107- 



PREPOSITIONS, disquisitions on the origin and ra- 

 dical sense of the Greek prepositions, v. 305. 



PRESSURES, elementary demonstrations of the com- 

 position of. viii. 245. 



PRINCE OF WALES ISLAND, account of the. 

 H. iii. 13. 



PROBLEMS, on the resolution of indeterminate. P. C. 

 ii. 193. 



QUASSIA POLYGAMA, account of the. P. C. 

 iii. 205. 



QUASSIA SIMARUBA, botanical and medical ac- 

 count of the. P. C. ii. 73. 



RAIN, on the theory of. P. C. i. 41. 



answers to the objections of M. de Luc, with 



regard to the theory of rain. P. C. ii. 39. 



RAINBOWS, phenomenon of two, intersecting one 

 another. H. v. 8. 



RAREFACTION, account of a very extraordinary 

 effect of. vi. 245. 



REFRACTION, description of some remarkable ef- 

 fects of unequal, observed at Bridlington Quay in 

 the summer of 1826. xi. 8. 



RICHARDSON (REV. DR WILLIAM), on the 

 dramatic or ancient form of historical composition. 

 L. C. i. 99. 



— remarks on the basalts of the coast of An- 

 trim. H. v. 15. 



RITCHIE A. M. (WILLIAM), on a new photome- 

 ter, founded on the principles of Bouguer. x. 443. 



ROBERTSON (REV. THOMAS), an essay on the 

 character of Hamlet. L. C. ii. 251. 



ROBISON LL.D. (JOHN), (Professor of Natural 

 Philosophy in the University of Edinburgh), the or- 

 bit and motion of the Georgium Sidus, determined 

 directly from observations. P. C. i. 305. 



