SECTIONS. INDEX OF SUBJECTS. 



289 



Permanganate of potash, on the preparation 

 of the standard solution of, 1854, 74. 



Permanganic acid, Prof. Schonbein on a 

 peculiar formation of, 1847, 57. 



Permian fossils of Cultra, Belfast Lough, 

 Prof. W. King on the, 1853, 53. 



system, as applied to Q-ermany, Sir 



E. I. Murchison on the, 1843, 52; to Eng- 

 land and Ireland, 54. 



, oolitic, liassic, and triassic formations, 



E. Hull on the south-easterly attenuation 

 of the, 1856, 67. 



Perodicticus of Bennett, and its relation to 

 Stenops, Prof. Van der Hoeven on the 

 genus, 1850, 125. 



Peroxides, metallic, Prof. G-raham on, 1834, 



579- 

 Perspective, on teaching, by models, by H. 



E. Twining, 1849, 33 ; 1856, 9. 

 — — , inversion of. Sir D. Brewster on some 



optical illusions connected with the, 1860, 



7- 

 Pertussis, Dr. Hannah on its treatment by 



cold washing of the chest, 1840, 158. 

 Peruvian bark. Dr. Mackay on Matias bark, 



as being equal to the, 1839, 61. 

 bark, the places where the tree grows 



which yields the, 1860, 162. 

 — — mummies, description of two, by Dr. 



BeUamy, 1841, 75. 

 Pessaries, Dr. C. Clay on the evils arising 



from the use of common, 1842, 87. 

 Petals, on the colours of, by W. E.G. Nourse, 



1858, 115 ; on the epidermal cells of, 119. 

 Petroleum, Prof. J. F.W. Johnston on, 1858, 



60. 

 Petzval's (Prof.) new combination lens, 



1858, 13. 



Phsenogamous plants of the Faroe Islands, 



1834, 598. 

 Phalangista, account of a species of, killed 



in the county of Durham, by J. Hogg, 



1859, 149. 



Phanerogamous plants. Dr. Duncan on im- 

 pregnation in, 1855, 106. 



Pheasants, new, introduced into England, 

 1859, 148. 



Philodina roseola. Prof. Agassiz on Proto- 

 coccus nivalis, the ova of, 1840, 143. 



Philology, Medo-Persic, Prof. MacDouall 

 on, 1852, 90. 



Phlegmonous erysipelas, Sir D. J. H. Dick- 

 son on a case of, 1839, 95. 



Phoca variegata, taken on the coast of Sligo, 

 notice of, 1836, 98. 



annellata, taken in the Severn, notice 



of, 1836, 98. 



Pholades, Dr. J. E. Gray on the boring of 

 the, 1838, 1 11.^ 



, Dr. T. Williams on the branchiaB and 

 mechanism of breathing in the, 1851, 82. 



Pholas, J. Alder and A. Hancock on the 

 branchial currents of, 1851, 74. 



Phonautograph, an instrument for register- 

 ing simple and compound sounds, Abbe 

 Moigno on the, 1859, 62, 



Phormium tenax, paper made from, 1836, 



132. 

 Phosphate of lime bed in the Isle of Wight, 



on the position of the, 1848, 69. 

 Phosphatic nodules of the greensand of the 



north of Ireland, Prof. J. F. Hodges on 



the, 1852, 36. 

 Phosphorescence of the British seas, on the, 



1849, 80, 81. 



of potassiiun, W.jPetrie on the, 1850,59- 



and composition of plate-sulphate of 



potash. Prof. F. Penny on the, 1855, 69. 

 and fluorescence of diamonds, Dr. J. 



H. Gladstone on the, 1859, 69. 

 by heat, on some new cases of, by Dr. 



T. L. Phipson, 1859, 76. 

 Phosphoric acid in natural waters. Dr. 



Voelcker on the proportion of, 1850, 63. 

 acid in rocks, on an indirect method 



of ascertaining the presence of, by Dr. 



Daubeny, 1855, 55. 

 phenomenon in a pond, Eev. T. Ean- 



kin on a, 1849, 29. 

 Phosphorite rock in Spanish Estremadura, 



Prof. Daubeny on the, 1844, 28. 

 Phosphorus, vapour of, Eev. T. Exley on 



the specific gravity of the, 1838, 64. 

 , Dr. J. H. Gladstone on the compounds 



of the halogens with, 1849, 38. 

 , Dr. J. Percy on copper containing, 



1849, 39. 

 , Prof. Schroetter on the allotropic con- 

 dition of, 1849, 42. 

 , on some optical properties of, by Dr. 



J. H. Gladstone and Eev. T. P. Dale, 1858, 



15. 

 in strata and in all fertile soils, on the 



cause of the general presence of, by Eev. 



Dr. Buckland, 1849, 67. 



and sulphur in organic compounds, 



on a method of determining, by Prof. 

 Voelcker, 1855, 73. 



, organic, in legumine. Prof. Voelcker 



on the proportion of, 1857, 60. 



Photobarograph, on the detection and mea- 

 surement of atmospheric electricity by 

 the, by M. J. Johnson, 1855, 40. 



Photochemical pile, new, M. Niepce on a, 

 1859, 260. 



researches, with reference to the laws 



of the chemical action of light, by Prof. 

 Bimsen and Prof. H. E. Eoscoe, 1855, 



48- 

 Photochromatic and pictorial impressions 



on the retina of the human eye, Eev. Dr. 



Scoresby on, 1854, 12. 

 Photogenic drawing. Dr. Schafhaeutl on a 



new method of, 1840, 71. 



process, Daguerre's, H. F. Talbot on, 



1839, 3. 



Photograpiiic camera, improvement on the, 



by Sir D. Brewster, 1849, 5. 

 lens, new, T. Sutton on a, 1859, 63. 



paper for automatic registration, 0. 



Brooke on, 1849, 34. 



pictures for the stereoscope, binocular, 



XT 



