SECTIONS. INDEX OF SUBJECTS, 



sm 



Telegraphic cables, submarine, on an appa- 

 ratus for laying down, by H. Conybeare, 

 1858, 209. 



cables, on constructing and laying, by 



J. Mackintosh, 1858, 214, 215. 



communications by land and sea, F. C 



Bakewell on, 1852, 121. 



communication between England and 



America, F. C. Bakewell on, 1854, 147. 



communication with India, General 



Chesney on, 1857, 126. 



- — - communication between Great Britain 

 and Ireland, by the Mull of Cantvre, Prof. 



- W. J. M. Eankine on, 1852, 128. 



■ , electro-, communication in England, 



Prussia, and America, F. Whishaw on the 

 state of, 1849, 133. 



conductors, on some of the methods 



adopted for ascertaining the locality and 

 nature of defects in, by C. F. Varley, 1859, 

 252. 



time signals,C. V.Walker on, 1852, 131. 



wires, submarine, W. Hall on a pro- 

 cess for covering with india-rubber, 1860, 

 211. 



wires, S. W. Silver on gutta percha and 



india-rubber as insulators for, 1860, 212. 



wires, Messrs. Werner and Siemens on 



a mode of covering, with india-rubber, 

 1860, 215. 



Telegraphs, electric, of the Midland railway, 

 W. H. Barlow on the, 1847, 21. 



■ , electric, F. Whishaw on the multi- 

 tubular pipes and panergous joints for, 

 1848, 123. 



• , hydraulic, hydro-mechanical, mecha- 

 nical, and " uniformity of time," F. Whi- 

 shaw on the, 1848, 123. 



— — : on the extension of communications 

 to distant places by means of electric 

 wires, by General Chesney, 1858, 148. 



: on magneto-electricity and under-. 



ground wires, by E. B. Bright, 1854, 8. 



" , electric submarine, Messrs. Werner 



and Siemens on the principles and prac- 

 tice involved in dealing with the electrical 

 conditions of, 1860, 32. 



-T — , subaqueous, F. Whishaw on chain 

 pipes for, 1849, 132. 



Telegraphy : on an instrument for deter- 

 mining the value of intermittent or alter- 

 nating electric currents, by W. White- 

 house, 1856, 19. . 



: the law of the squares — is it appli- 

 cable or not to the transmission of signals 

 in submarine circuits ?, by W.Whitehouse, 

 1856, 21. 



• : on the hand heliostat, by F. Galton, 



1858, 15. 



-: — : on the transmission of electricity 

 through water, by J. B. Lindsay, 1859, 



, submarine : observations on an electric 



cable, by W. Whitehouse, 1855, 23. 



Telekouphonon, or speaking telegraph, F. 

 Whishaw on the, 1848, 125. 



Telemeter, an instrument for measuring ac-. 



tual distances, P. Adie on the, 1860, 59. 

 Teleosauri, on the skin and food of, by C* 



Moore, 1856, 69. 

 Teleosaurus ischnodon, a new species of 



vertebrate fossil, notice of, 1854, 80. 

 Telescope, H. F. Talbot on the improvement 



of the, 1842, 16. 

 , E. Bowman on determining distances- 



by the, 1841, 42. 



, graphic, C. Varley on a, 1853, 10. 



, large, H. Lawson on a method of con- 

 tracting the apertiire of a, 1846, 9. 

 , large : H. Lawson on the arrangement 



of a solar eyepiece, 1846, 9. 



, reflecting, T. Davison on a, 1833, 420. 



, reflecting, for celestial photography, 



H. Draper on a, 1860, 63. 

 speculum of silvered glass, L. Foucault 



on a, 1857, 6. 

 Telescopes, astronomical, M. Boguslawski on 



a stand for, 1845, 6. 

 , Dr. E. Greene on a portable equatorial 



stand for, without polar axis, 1846, 8. 

 , Eev. Prof. Powell on a new equatorial 



mounting for, 1849, 2. 

 , reflecting, on improvements in the 



optical details of, by T. Grubb, 1857, 8. 

 , reflecting, J. Nasmyth on forming con- . 



cave mirrors for, 1839, 7. 

 : on a method of supporting a large 



speculum, by W. LasseU, 1850, 180. 

 , reflecting. Earl of Bosse on procuring 



plain specula of silver for, 1851, 12. 

 , reflecting, J. D. SoUitt on the compo- 

 sition and figuring of the specula of, 1853, 



10. 

 , Dr. B. Greene on polishing the specula 



of, 1843, II. 

 • , reflecting, on a machine for polishing 



specula for, by Dr. R. Greene, 1856, 24. 

 , reflecting, on a collimator for com- 

 pleting the adjustments of, by Prof. G. J. 



Stoney, 1856, 30. 

 , on natural occurrences that impair the 



vision of, by 0. Varley, 1854, 48. 

 Tellina proxima, in the glacial clay in Bel- 



helvie, notice of, by Dr. Dickie, 1859, 14.7. 

 Temperature, Dr. Ure on a self-acting phy- 

 sical apparatus for regulating, 1833, 419. 

 • and mechanical force, J. J. Waterston 



on a law of mutual dependence between, 



1853, II. 

 , on a thermometer for measuring fluc- 

 tuations of, by B. Stewart, 1856, 47. 

 , note on observations of, by Dr. Sil- 



jestrom, 1858, 39. 

 ■ of the earth, W. Hopkins on the, 1837, 



92. 

 of various parts of North America, 



table of, by Dr. Daubeny, 1838, 3 1. 

 of the British Isles, A. Petermann on 



the, and its influence on the distribution 



of plants, 1849, 26. 

 — — , mean, in India, Col. Sykes on the, 



1834, 567. 



