SECTIONS. INDEX OF AUTHORS, 



17S 



Powell (Rev. Prof. B.), observations of 

 the annular eclipse of Oct. 9, 1847, 

 1848, 3. 



on a new equatorial mounting for tele- 

 scopes, 1849, 2. 



on De Vico's comet, 1849, 2. 



on discussions relative to the theory 



of the dispersion of light, 1849, 8. 



on irradiation, 1849, 9. 



on the refractive indices of several 



substances, 1850, 14. 



, remarks on Lord Brougham's experi- 

 ments on light, &c., 1851, 11. 



on M. G-uyot's experiment on the 



earth's rotation, 1851, 23. 



on luminous beams, 1852, 1 1. 



on a peculiarity of vision, 1852, 



II. 



on converging sunbeams, 1852, 12. 



on Fresnel's formulas for reflected and 



refracted light, 1856, 15. 



Power (Madame J.), experiments and ob- 

 servations on the Argonauta Argo, 1844, 



74- 

 Power (Dr.) on plants found in the neigh- 

 bourhood of Cork, 1843, 79. 

 Power (Dr. J. A.) on myrmecophilous Co- 



leoptera, 1858, 129. 

 Power (Rev. J.), inquiry into the cause of 



endosmose and exosmose, 1833, 391. 

 PowRiE (J.) on a fossiliferous deposit near 



Farnell, Forfarshire, 1860, 89. 

 PozNANSKi (Dr.) on the connexion between 



atmospheric vicissitudes and epidemic 



diseases, 1857, 115. 

 Pratt (S. P.) on specimens supposed to be 



from the slaty rocks of Mount Batten, 



1841, 64. 

 on the coal deposits of the Asturias, 



1845, 49. 

 Prestwich (J.) on the occurrence of Cypris 



in a part of the tertiary freshwater strata 



of the Isle of Wight, 1846, 56. 

 on some new facts in relation to the 



section of the cliff at Mundesley, Norfolk, 



1860, 90. 

 Prevost (M. Constant), explication d'un 



tableau de I'etude methodique de la Terre 



et du Sol, 1851, 68. 

 Price (Dr. A. P.) on a new photometer, 



1853, 9. 

 on pentasulphate of calcium as a means 



of preventing and destroying the Oidium 



Tuckeri, or grape disease, 1853, 46. 

 on determining the commercial value 



of oxide of manganese, 1853, 47. 

 on determining the amount of avail- 

 able chlorine contained in hypochlorites 



of lime, soda, or potash, 1853, 48. 

 * — ■ — on a pentasulphide of calcium as a 



remedy for grape disease, 1853, 63. 

 on a new method of alkalimetry, 1854, 



74- 

 Price (Rev. Prof. B.) on a new proof 

 of the principle of virtual velocities, 

 1847, 5. 



Price (Rev. Prof. B.), address as President 

 of Section A, at Oxford, 1860, i. 



Price (Dr. D. S.) on the estimation of iron 

 by the method of Marguerite, and on the 

 preparation of the standard solution of 

 permanganate of potash, 1854, 74. 



* on the supposed influence of the hot- 

 blast in augmenting the quantity of phos- 

 phorus in cast iron, 1854, 74. 



on the chemical composition of some 



iron ores called " brass " occurring in the 

 coal-measures of South Wales, 1855, 66. 



Price (J.) on an improved method of con- 

 structing railways, 1838, 158. 



on a steam-engine boiler, 1838, 162. 



on the embryogeny of Pulmogradea 



and Ciliogrades, 1846, 86. 



on the quasi-osseous system of Acale- 



phae, 1846, 87. 



on the geology of a little district of 



carboniferous limestone, at Llysfaen and 

 Penmaen Rhos, near Abergele, 1854, 93. 



* on the geology of the district of 



Great and Little Ormeshead, 1855, 94. 



, notes on animals, 1855, 117. 



on slickensides, 1859, 123 ; 1860, 91. 



on Cydippe, 1859, 155; 1860, 120. 



Price (J. T.) on a pair of paddle-wheels 

 fixed on a steamer in substitution of or- 

 dinary wheels, 1836, 131. 



on a method of condensing steam in 



marine engines, 1851, 116. 



Prichard (J.), meteorological register at 

 Beddgelert, Carnarvon, 1842, 25 ; 1843, 

 20. 



Prichard (Dr. J. C.) on diseases of the 

 brain, 1836, 107. 



on the extinction of the human races, 



1839, 89. 



* on the position of ethnology as a 



science, 1847, 126. 



Prideaux (J.) on thermo-electricity, 1833, 



384- 



on the causes of the increased destruc- 



tibility of modern copper sheathing, 1841, 



43- 



, notice of some copper which had been 



acted on by sea-water, 1841, 77. 



on the extent, causes, and remedies of 



fungi destructive in agriculture, 1846, 

 44. 



Pring (Dr. J. H.) on the Noctiluca miliaris, 

 the animalcular source of the phosphores- 

 cence of the British seas, 1849, 81. 



Prit CHARD (A.), apparatus for illustrating 

 the polarization of light, 1835, 112. 



Pritchard (Rev. C.) on a meteor seen at 

 Cheltenham, 1856, 47. 



* on the gases of the Grotto del Cave, 



1856, 58. 



Prosser (Mr.), notice of his method of 

 making earthenware or porcelain, 1842, 

 114. 



on unchanged steam, 1854, 159. 



Prout (Dr. W.), observations on atmo- 

 spheric air, 1831-32, 570. 



