SECTIONS. INDEX OF SUBJECTS. 



295 



Polarized light, elliptically, Prof. Powell on 

 certain cases of, 1842, 13. 



light, Prof. T. Andrews on the dis- 

 covery of minute quantities of soda by the 

 action of, 1852, 33. 



light in doubly refracting crystals, M. 



Dove on a method of measuring the ab- 

 sorption of, 1854, 10. 



Polarizer, new, L, Foucault on a, 1857, 5. 



Polarizing light, Prof. Forbes on the use of 

 mica in, 1839, 6. 



microscope, Sir D. Brewster on an im- 

 provement in the, 1840, 10. 



structure in the crystalline lens after 



death. Sir D. Brewster on the, 1836, 16. 



structure of the eye. Sir D. Brewster 



on the, 1850, 5. 



Political economy and statistics, Prof. Law- 

 son on the connexion between, 1843, 94. 



Pollen, Prof. Henfrey on the development 

 of, 1848, 84. 



and vegetable impregnation. Dr. Ald- 



ridge on the, 1840, 144. 



Pollicipes, on a new species of, in the in- 

 ferior oolite near Stroud, by Eev. P. B. 

 Brodie, 1856, 64. 



scalpellum, C. W. Peach on, 1845, 65. 



Polycystina, a new section of animalcules 

 from Barbados, Sir R. H. Schomburgk on, 

 1847, 70. 



Polygala oxyptera, Reich., new to the Eng- 

 lish flora, 1839, 92. 



Polyhedron of forces, J. T. Graves on the, 

 1856, I. 



Polyparia, fossil, Dr. Jacob on, 1835, 59. 



Polyp, freshwater (Hydra viridis), Prof, 

 Allman on the structure of the, 1853, 64, 

 70. 



Polypes, Tubularian and Sertularian, Prof. 

 Allman on the medusoid structure in the 

 reproductive gemmae of the, 1852, 70. 



Polytechnic School at Paris, on the educa- 

 tion in the, 1841, 96. 



Polyzoa, two new species of (Avenella dila- 

 tata and Arachnidia hippothoides). Rev. 

 T. Hincks on, 1858, 128. 



from Port Natal, Algoa Bay, and 



Table Bay, in South Africa, G-. Busk on, 

 1850, 118. 



, marine, collected by G-. Barlee in 



Shetland and the Orkneys, with descrip- 

 tions of the new species, by G-. Busk, 

 1859,144. 



, Hippocrepian, on the signification of 



the so-called ova of the, and on the deve- 

 lopment of the proper embryo in these 

 animals, by Prof. Allman, 1855, 118. 



Poncelet's theorems for the linear represen- 

 tation of quadratic radicals. Prof. Sylvester 

 on a generalization of, 1860, 7. 



Pontia, notice of some specimens of, 1841, 

 72. 



Poole Harbour, some remarks on, 1837, 94. 



Population, Prof. Pryme on the different 

 methods employed to estimate the amount 

 of, 1845, 91. 



Population of Great Britain and Ireland, on 



the distribution of the, by A. Petermann, 



1848, 113. 

 , French, Baron Dupin on the influence 



of the price of grain on the, 1836, 132, 133, 

 Porcelain, Sir J. Robinson on Mr. Prosser's 



method of making, 1842, 1 14. 

 , G. Bontemps on the colouring of, by 



metallic oxides, 1849, 34. 



manufacture of Glasgow, Dr. Strang 



on the, 1856, 153. 



Porpoise, Dr. Sharpey on the anatomy of 

 the blood-vessels of the, 1834, 682. 



Porrigo rodens (a pustulous disease of the 

 skin). Dr. A. T. Thomson on, 1841, 77. 



Posidonia minuta in the new red sandstone 

 of Tyrone, notice of, 1837, 88. 



Potash, acetate of. Prof. Barker on the se- 

 paration of peroxide of iron from sul- 

 phuric and muriatic acids by, 1835, 52. 



, bichromate of. Prof. T. Thomson on 



its manufacture at Glasgow, 1840, 62. 



, bichromate of, W. K. Sullivan on 



some double salts formed with, 1858, 67. 



, chromate and bichromate of, for the 



estimation of iron in the common ores, 

 and for the analysis of the clay-band and 

 black-band ironstone, Prof. F. Penny on, 

 1850, 58. 



, chrysammate of. Sir D. Brewster on 



a new property of light exhibited in the 

 action of, upon common and polarized 

 Ught, 1846, 7. 



, ferrocyanate of, R. Hunt on its in- 

 fluence on the iodide of silver as a pho- 

 tographic preparation, 1841, 47. 



or soda, hypochlorites of, Dr. A. P. 



Price on a method for determining the 

 amount of available chlorine in, 1853, 48. 



, phosphate of, on its use in a salt-meat 



dietary, 1855, 63. 



, plate-sulphate of, on the composition 



and phosphorescence of, by Prof. F. Penny, 

 1855, 69. 



, prussiate of. Prof. T. Thomson on the 



manufacture of, in Glasgow, 1840, 61. 



Potass, caustic, R. Mallet on a new case of 

 the chemical action of light in the deco- 

 loration of recent solutions of, 1838, 6 1 . 



Potassa and soda, Prof. F. Penny on the ac- 

 tion of nitric acid on the chlorates, iodates, 

 and bromates of, 1840, 79. 



Potassium, carburet of. Prof. E. Davy on, 

 1836, 63. 



. , cyanide of, on its application to killing 



insects for the cabinet, 1854, 106. 



, cyanuret of. Dr. Bromeis on its for- 

 mation in a blast furnace, 1842, 34. 



, iodide of. Prof. F. Penny on, 1852, 37. 



and ammonium, palladio-chlorides of. 



Sir D. Brewster on the dichroism of the, 

 1842, 13. 



, explosive, Dr. J. H. Gladstone on, 



1857, 47. 



, J. Goodman on the calorific pheno- 

 mena of, 1848, 53. 



