492 



INDEX TO VOLUME II. 



WATER METERS. 



290, suggestions from brothers re- 

 garding.281): improved. Siemens'?, 

 C. W., 289 ; jet. objections to. 289 ; 

 Kennedy's, 279 ; Lewis's, 277 ; 

 Mead's bucket, 276 ; Parkinson's 

 cheapest for very small houses, 

 288 ; {piston, 277 ; comprises, 

 277 ; disadvantages of, 277 ; re- 

 sembles bucket meter, 277) ; pres- 

 sure should not affect, 276 ; regis- 

 tration should be correct, 275 ; 

 Roberta's, 278. 



Water meters, Siemens's, C. W., 275 ; 

 accuracy of, 287 ; (by area if 

 channel, 279 ; description of, 279 ; i 

 registration by, 279) ; advantages 

 by use of, 294 ; applications of, 

 295 ; (Barker's mill or spiral 

 propelh'.r arrangement, 281, 285 ; 

 description of, 285 ; propeller of. ' 

 formation of, 285 ; spindle and 

 bearing, oil chamber of, 286 ; for 

 small supplies, 285 ; less theoreti- 

 cally perfect than balanced screw, 

 286) ; error of, limit of, 288 ; ' 

 exhibition of, 287, 295 ; by impact, 

 steps towards, 279 ; (improved, 

 291 ; blades attached to drum of, 



291, 296 ; area, relative, of inlet 

 and outlet, 291 ; continuously 

 working for three years, 292 ; 

 grating of, 291 ; spindle and bear- 

 ing of, 291) ; jets, prejudicial effect 

 of, how obviated, 286 ; Manchester 

 Corporation tested, 280 ; pressure 

 equal throughout, 288 ; prevention 

 of waste of water by, 294. 



Water meters, Siemens's, G. W.. 

 screw balance or compensating. 

 281 ; action of, 282 ; cone, in- 

 verted, of, 282 ; counting arrange- 

 ment of, 282 ; description of, 281 ; 

 details of, 282 ; (hollow revolving , 

 d mm screw of, 282 ; action of. 

 283 ; of bronze, 284 ; cast, 284 ; 

 coupled, advantage of. 283 ; of 

 gutta-percha, not rigid, .284 ; 



WERTHEIM. 



quantity of water to cause revolu- 

 tion of, 2h4 ;) fitting, accuracy of. 

 284 ; grating of, 282 ; kneading 

 water in, object of, 282 : 

 measuring apparatus of, 281 ; 

 (spindlet, greatest difficulty with, 

 284 ; metals, various, tried, 284 ; 

 pressure, free from, 283 ; protec- 

 tion of, by oil chamber, 285 ;) 

 stationary film of water, effect of. 

 284). 



Water meters. Siemens's, C. W. 

 (trxting, method of, 287 ; by 

 placing between feed pump 

 and boiler, 296 ; under varied 

 pressures and volumes, 286) ; tin- 

 ning of brass work of, 296 ; 2,000 

 used in large towns in England 

 and Wales. 295 ; used at various 

 pressures, 288 ; wheel-work insu- 

 lated in oil, 287. 



Water meter, Taylor's, 277 ; Tebay's 

 impact, failure of, cause of, 280 ; 

 working and registering parts 

 must be inaccessible, 276. 



Water supply, continental system 

 inconvenient, 278 ; continuous or 

 permanent, 276 ; intermittent, 

 276 ; by meter, 294. 



Water, table of, consumed, per meter 

 and paid for, 293 ; waste of, 275. 

 294 ; wasted on permanent supply 

 system, 50/ , 293. 



Water-works, rapid growth of, 275. 



Waterston's meteoric theory of the 

 conservation of the sun, 424 ; sun's 

 temperature, 10,000,000 C., 435. 



Watt's separate condenser and air- 

 pump, 421 ; steam engine, patent 

 nearly lost for want of funds, 

 420. 



Weather grumblers, fable about, 418, 

 419. 



Weinhold, Prof., 011 electrical resist- 

 ance of platinum, 436. 



Wertheim's investigations on steel 

 springs, 369, 



