SECTIONS. INDEX OF SUBJECTS. 



n7 



Colours, organic, Dr. Or. Wilson on the in- 

 fluence of sunlight over the action of the 

 dry gases on, 1850, 65. 



Coluber natrix of Italian authors, living 

 specimen of, 1838, 116. 



Colymbus arcticus, occiirrence of, near 

 Swansea, 1848, 125. 



Coma, intermittent, Sir D. J. H. Dickson 

 on a case of, 1839, 95. 



Comanche Indians, W. Bollaert on the, 



1846, 116. 



Tocabulary, on a, 1846, 117. 



Comatula rosacea, on the occurrence of the 



pentacrinoid larva of, in Lamlash Bay, 



Isle of Arran, by Dr. W. B. Carpenter, 



1855, 107. 

 Sarsii, a new species of Echinodermata, 



J. Alder on, 1859, 142. 

 Combination, Dr. Ajidrews on the heat of, 



1843, 32. 

 Combinations, on a theorem in, by H. M. 



JefFery, 1856, 3. 

 Combustible compounds to be used in war, 



J. Mackintosh on the appKcation of, 



1858, 214. 



Combustion, Dr. C. J. B. Williams on the 

 phenomena and products of a low form of, 

 1834, 588. 



■ , Dr. N. Arnott on the regulation of, 



1847, 47. 



, heat of, J. P. Joule on the electric 



origin of the, 1842, 3 1. 



, spontaneous, A. Booth on, 1841, 50. 



Comet discovered by Brorson in 1846, and 



its reappearance in 1851, Dr. Von Galen 



on the, 1851, 23. 



, Donati's, on, 1858, 28. 



, Halley's, Sir J. F. W. Herschel on, 



1838, 19. 

 , Rev. Prof. Powell on De Vico's, 



1849, 2. 

 Comets and planets. Sir J. W. Lubbock on 



the calculation of the perturbations of, 



1847, 9. 

 in space, on the distribution of the 



orbits of the, by Prof. Mossotti, 1857, 



23. 

 , on the constitution of, by Dr. Siljes- 



trom, 1858, 30. 

 -- — , Prof. J. C. Adams on the application 



of graphical methods to the determination 



of the perturbations of, 1849, i. 

 Cometes (Humming-birds), new species of, 



by J. Gould, 1853, 68. 

 Compass, a mechanically adjusted,1854, 151. 

 , Baron de Bode's insulated, J. Y. 



Oliver on the, 1845, 16. 

 , changes of deviation of the, on board 



iron ships by " heeling," J. T. Towson on, 



1859, 28. 



' in iron steamships, G. B. Airy on 



correcting the local magnetic action of 



the, 1838, 21. 

 , on the changes of the action of, in 



iron ships, by Eev. W. Scoresby, 1854, 



49. 



Compass, mariner's, Mr. Bttrick on a, 1835, 



112. 

 needle or bar, new, by Rev. W. 



Scoresby, 1836, 28. 

 pivots, Capt E. J. Johnson on native 



aUoy for, 1840, 198. 



, Pope's fluid, improved, 1836, 132. 



, portable azimuth, new, E. J. Dent on 



a, 1846, 25. 



, new proportional, on a, 1844, 8 



, proportional, on an improvement in 



the, by Colonel Shortrede, 1859, 63. 

 , ship's, E. J. Dent on a method of 



suspending a, 1845, 16. 

 Compasses, Capt. E. J. Johnson on the de- 

 viations of the, of H. M. steamships 



Ajax and Blenheim, 1851, 8. 

 , Capt. E. J. Johnson on placing them in 



iron ships, 1852, 10. 



of iron ships, on, 1854, 49, 53, 55. 



, sea. Rev. T. Dury on, 1841, 27. 



Compounds, on the time required for their 



decomposition, by Dr. T. Woods, 1857, 



61. 

 Compressibility of water, on, 1833, 353. 

 Concrete, J. I. Hawkins on the formation 



of, 1843, 99. 

 Condensation, surface, Dr. J. P. Joule on, 



1859, 236. 

 Condenser, multiplying, new, Prof. Svan- 



berg on a, 1846, 31. 

 Conductibility of the earth, Prof. Matteucci 



on the, 1850, 56. 

 Conduction and induction. Sir G. C. 



Haughton on the nature of, 1847, 27. 

 Conductive powers of various substances 



for heat, W. Hopkins on the, 1867, 



70. 

 Conductors, metallic, Sir W. S, Harris on 



some remarkable examples of the pro- 

 tection afforded by, against heavy strokes 



of hghtning, 1847, 23. 

 , electrified spherical. Prof. W. Thom- 

 son on the mutual attraction between two, 



1852, 17. 

 " Cone-in-cone," on the origin of, by H. C, 



Sorby, 1859, 124. 

 Confectionary, coloured, Dr. Macnamara on, 



1857, 55. 

 Conferva Unum, Prof. Allman on the struc- 

 ture of the endochrome in, 1853, 62. 

 — — nivea. Dr. Lankester on, 1840, 144. 

 Conglomerates, red, of Torbay, on the 



Beekites found in the, by W. Pengelly, 



1856, 74. 

 Congruence na;^n -^ 1 (mod p), J. T. 



Graves on the, 1856, i. 

 Congruences, on a particular class of, by 



H. M. Jeffery, 1856, 6. 

 Coniferae, Dr. R. Brown on the pluralitjr 



and development of embryos in the seeds 



of, 1834, 596. 

 . , fossil, W. Nicol on the structure erf, 



1834, 660; 1835,73. 

 Connemara, Prof. Rowney on the analysis 



of some minerals of, 1860, 71. 

 q2 



