478 



INDEX TO VOLUME II. 



BATHOMETER. 



Bay of Biscay, 363,364) ; barometric 

 effects, elimination of, 379 ; bat- 

 tery for, 367 ; cable laying, useful 

 in, 380 ; continental attraction, 

 influence of on, 384 ; corrections 

 in observations with, 371 ; density, 

 atmospheric, influence on, 370 ; 

 depth, indicates variation of, 372 ; 

 description of, 364 ; diaphragm, 

 range of, 367 ; diaphragm and 

 mercury surface motion, ratio of, 



366 ; elevation, test for at Clock 

 Tower, 378 ; force available of, 

 365 ; friction in eliminated by 

 oscillation, 365 ; galvanometer for, 



367 ; geographical influences on, 

 371 ; geological influences on, 371) ; 

 (latitude effects on, 372, 373 ; 

 observations of, not corrected for, 

 375 ; testing for at Brighton and 

 Westminster, 373, on board Fara- 

 day down Channel, 374 ; at Scar- 

 borough and Westminster, 374) ; 

 mercury column of, resting on cor- 

 rugated diaphragm, balanced 

 against springs, 364 ; micrometer 

 screw of, 367, 368 ; modification 

 of, 379 ; (observations of on 

 Bothnia, 383 ; on Faraday, 383 ; 

 on H.M.S. Fawn, 383 ; methods 

 employed in, 377) ; parathermal 

 system of adjustment, 370 ; pen- 

 dulous motion, prevention of, 364 ; 

 pumping action, means of reduc- 

 tion of, 365 ; reading of, 367 ; 

 readings, variations of, accounted 

 for, 379 ; record on Faraday, 

 375 ; (scale of adjustment of, 366 ; 

 range of, 365) ; shallow water, 

 warning approach of, 379 ; sound- 

 ings actual and by, comparison of, 

 and variation between, 372, 374, 

 375 ; spiral glass tube and scale 

 for, 383 ; springs and mercury of, 

 elastic range of, ratio of, 366 ; table 

 of observations on Faraday, 376 ; 

 (temperature effects, compen- 



BRUNLEES, J. 



sation for, 369 ; elimination of, 379; 

 influence of on, 368) ; Thomson's 

 sounding apparatus compared 

 with, 377 ; uses practical of, 379 ; 

 wheel and pinion gearing of, 368 ; 

 (zero of, how affected, 384 ; agree- 

 ment with, on return to dock, 377 ; 

 maximum or island indication, 

 372). 



Beam, action of, in pumping engine, 

 298 ; oscillating between springs, 

 298. 



Bearings in water, trouble with, 289. 



Beaumont, Col., air tramway-loco- 

 motive of. 389, 390. 



Bell, A. G., on the photophone, dis- 

 cussion of paper by, 410-412. 



Bell, I. L., hypothesis regarding cast 

 iron ball floating on molten cast 

 iron, 408 ; criticism of, 409. 



Bessemer iron melted in regenerative 

 steel furnace, 307. 



Bessemer steel process, reference to, 

 308. 



Bessemer steel rails, re-melting of, 

 308. 



Block system for railways, auto- 

 matic, 332, 333. 



Bolometer and photometer, Lang- 

 ley's, Prof., experiments with, 

 447. 



Bontemps. C., pneumatic tubes, ex- 

 periments on the movement of air 

 in, discussion of paper by, 346- 

 356. 



Bramwell, F. J., inventions, expe- 

 diency of protection for, 341-343 ; 

 Patent Bill, Society of Arts, dis- 

 cussion of papers by, 414-415. 



Breaking strain of materials, 315. 



Breechloader guns, 343. 



Browne, Capt. C. V., armour to resist 

 shot and shell, construction of, 

 discussion of paper by, 400-401. 



Brunlees, J., railway accidents 

 causes and prevention of, discus- 

 sion of paper by, 302-304. 



