I\I)EX TO VOLUME //. 



481 



IAN. 



I v ; : K i uned action of sun. 



. patent, consideration uf. J-.'n. 



Ferine, ,).. decimal measure, inch 

 and ni.'tie as standard unit of. 

 ili-cussiun of paper liy. 3<>.~>-3U7. 



Field gun, compressor, hydraulic for, 

 IIS; lightening of, 418 ; simplifi- 

 cation of, 418. 



Flashing lights on beacons or buoys. 

 318 ; cable of large section, and 

 ordinary battery for, 313 (,sVc- 

 iitrnx'x. C. H"., proposal to have 

 electro-magnet on buoy, 313 ; de- 

 scription and exhibition of ar- 

 rangement for, 313, 314 ; tell-tale 

 arrangement for narrow pav-a<_ r e-.. 

 314) ; Stevenson's, T.. proposal to 

 u-e Kuhrakorff's coil. 313. 



Flight. Dr.. gases in ineteorolites, 

 analysis of. 42J. 



Focus temperature not exceeding 

 that of radiating surface. 44'.i. 



Formula for terrestrial attraction. 

 M8. 



Fowler. J.. query as to Bessemer 

 metal rernelted into mils, 308. 



French patent taxes payable by 

 driblets. 342. 



Friction, gaseous, in tubes, 3.1J. 



G ALTON, Captain D., railway acci- 

 dents, and existing legislation, 

 discussion of paper by, 302-304. 



Oamgee, Professor J.. cold, artificial 

 production of, discussion of paper 

 by, 317, 318 ; refrigerating ma- 

 chine, 317. 



Gas, diffusion of, 297 ; leakage of, 

 through retorts, 297. 



Gas making, clay retorts for, 297. 



Gases, not occluded in ineteorolites 

 during passage through our at- 

 mosphere. 1 1.' 1 ''. 



Gaudard. J., materials, strength, and 



Vol.. II. 



GUNS. 



-i.stanee of, discussion of paper 

 by, 815-517. 



Geographical influences on batho- 

 meter, 371. 

 Geological influences on bathometer. 



German patent law, new proposed, 

 342. 



Mass, flint, used for lenses and 

 prisms, 311 ; refractibility of, 

 affected by lead, 311. 



Gome's, Dr., refrigerating machine, 

 326. 



Government decisions on inventions, 

 effect of on public opinion, 310 : 

 departments and patents, 422 ; 

 and inventors, 310 ; testing in- 

 ventions by, 310 ; imperfect trials, 

 injurious to inventors, 310. 



Graham, gas diffusion, reference to, 

 297. 



Gravitation. See Terrestrial Attrac- 

 tion. 



Grove, supposed gases to be in spaces. 



Guest and (Jhrimes. makers of Sie- 

 men-'s. C. \V.. water meters, 281. 

 290. 



Guns, breech loader, in all nation* 

 but England, 343 ; carriages, 330 ; 

 cast steel, German, most satis- 

 factory results, 299 ; composite 

 and homogeneous compared, 300 ; 

 core of, should be solid steel, 299 ; 

 corrugated bands of steel put on 

 spirally. 299 ; erosion in, pre- 

 vention of, 843 ; field, lightening 

 of, 418 ; force acting on, Siemens's 

 C. W., proposed method of de- 

 termining, 300 (AVw/;y/.f xfrrl, -H 

 times as strong as cast iron, 299 ; 

 details of cost of, &c., 3( ; manu- 

 facture of, 299) ; laminar com- 

 pressor for, Siemens, C. W. asked 

 to advise regarding improvement 

 of, 330 ; longitudinal strength of, 

 how increased, 299 ; oval, bore for, 

 I I 



