INDEX TO VOLUME III. 



. CONTINENTAL. 



Continental educational establish- 

 ments unsuitable for England, 

 275, 



Contre-vapeur, 59. 



Convection currents in liquids, cause 

 of, 297 ; how improved, 297. 



Convertibility of energy, illustra- 

 tions of, 90. 



Coode, Sir J., tidal records of, 346. 



Cooke, as telegraph inventor, refer- 

 ence to, 74. 



Co-operation between labour and 

 capital, 128. 



Cooper's Hill Engineering College, 

 reference to, 275. 



Copper, conductivity of, varies be- 

 tween wide limits, 40 ; dynamo 

 machines, different effect of per 

 .pound of, in, 401 ; durable in sea- 

 water when mixed with phospho- 

 rus, 14. 



Cornish engine, reference to, 1 90. 



Corrosion, experiments on, by Ainslie, 

 and Gautier, Capt., 151. 



Cort, puddling process of, 232. 



Coventry, visit to. 359. 



Cowper, E. A., proved consumption 

 of fuel as low as 1^ Ibs. per horse- 

 power, 95. 



Coyte, A., on puddling iron, 155. 



Crack or pinhole in conductor, im- 

 possibility of getting spark from. 

 238. 



Craft or calling, necessity for culti- 

 vating science of, 389 ; love and 

 pride in, 389. 



DALTON, chemistry, researches on, 

 reference to, 325. 



Daniell's pyrometer, reference to, 

 121. 



Danks's mechanical puddling, refer- 

 ence to, 149. 



Darby, A., regenerative gas furnace, 

 proposal made to use in 1861, 140. 



DEEP SEA CABLES. ' 



Darwin, C., death of, reference to, 

 316. 



Davy, Sir H., decomposed potash 

 with Wollaston battery, 258 ; elec- 

 tric arc in 1810, 258 ; heat and 

 motion, proof of identity of, 184. 



Decarburization, Heaton's process 

 of, 60, 61. 



Deep sea cables, 7 ; Atlantic, criti- 

 cism of, first, 15 ; (coiling on 

 board ship, 17 ; water-tight tanks 

 for, suggested for Malta and Alex- 

 andria cable, not adopted till 

 cable injured, 17) ; (conductor of, 

 8 ; charge varies with surface of, 

 and inversely with insulating ma- 

 terial, 9 ; internal lining of Ley- 

 den arrangement with sheathing 

 for external lining, 8 ; single wire, 

 objection to, 9 ; strand of copper 

 wires, 8 ; 9 ; transmission, rate of, 

 varies with conductivity of, 9) ; 

 covering external of, 173 ; flexi- 

 bility of, 23 ; (insulator of, 10 ; 

 characteristics of, 10 ; gutta- 

 percha and india-rubber only avail- 

 able, 10 ; vital part, 10) ; (laying, 

 18 ; angle of descent, 20 ; forces 

 acting upon, 19, 20 ; of heavy 

 cable, 21 ; identification of bottom, 

 difficult in, 18 ; of light cables, 21 ; 

 line in which cable runs out in, 19 ; 

 mechanism for, 19 ; paper on, by 

 Longridge, J. A., and Brooks, C. H., 

 reference to, 20 ; sounding for, 18) ; 

 (sheathing of, 13 ; destruction of, 

 by marine insects, 13 ; helical of 

 Atlantic cable, danger of, 13 ; of 

 reeds joined end to end, 14 ; re- 

 quired for strength and protection 

 to core, 13 ; to resist chemical 

 action of sea water and marine 

 animals, 23 ; for shallow seas, 14 ; 

 Siemens's, C. W., proposed, 13 ; 

 laid in Mediterranean, 14, and 

 used for military purposes by 

 European governments, 14) ; and 



