INDEX TO VOLUME III. 



443 



MEASUREMENT. 



120) ; (importance of, illustration 

 of, 115; in inn-hanii :il. 114, in 

 physical science, 114) ; is know- 

 ledge, 115 ; (of light, 122 ; photo- 

 meters, Rumford's, Bouguer's, Bun- 

 sen's, Ulster's, Adam's selenium, 

 and Siemens's, Wer., selenium, 

 122 ; of wave length and polari- 

 zation. 122) ; (linear, 117 ; Whit- 

 worth, Sir J., lecture by, 117) ; 

 merits relative of, a bont and ;'i 

 trait, 117 ; national system of. 420; 

 (of ftpccific gravity, 118 ; Archi- 

 medes, application of, 118) ; (ther- 

 mal, 120, 121 ; calorific capacities 

 of liquids, by Wartmann, 121 ; 

 calorimeters of Andrews, 121, and 

 Lavoisier, 121 ; diacalorimeter of 

 Guthrie, 121 ; by Florentine Acca- 

 demia del Cimento spirit thermo- 

 meter, 121 ; of fusion by Himly's. 

 C., arrangement, 121 ; dynamically, 

 by Joule, 121 ; by pyrometers of 

 Wedge wood and Daniell, 121 ; 

 scales, 120, 121 ; by thermometers 

 of various kinds, 120 ; by air, most 

 perfect, 120) ; (Thomson, Sir Wil- 

 liam, on, in British Association 

 address of 1871, 114 ; accurate, im- 

 portance of to scientific discovery, 



114 ; Andrews's discovery of con- 

 tinuityof gaseous and liquid states 

 due to, 115 ; Faraday's discovery of 

 specific inductive capacity due to, 



115 ; Joule's discovery of thermo- 

 dynamic law due to, 115; New- 

 ton's discovery of gravitation, 

 illustration from, 114) ; (of time, 

 118 ; by clocks compensated for 

 thermometric and barometric ef- 

 fects, 119 ; historical time keepers, 

 Cook's, Capt,, and others, exhibi- 

 tion of, 118 ; by pendulum action, 

 Huyghens's application of Galileo's 

 discovery, 118) ; of velocity, 119 ; 

 (of weight, 118 ; accuracy of, sur- 

 prising, 118; by balances, noted, 



METEOBITE8. 



1'iicstley's, Dr., and Bickers and 

 Hennessey's standards, 118 ; by 

 beam weighing machines and 

 spring and torsion balances, 118 ; 

 in vacuum, 118); (of work, 111); 

 by Colladon's dynamometrical ap- 

 paratus, 120 ; Hirn's, G. A., pandy- 

 namometer, 120 ; and Richard's 

 indicator, 120). 



Mechanical energy into heat, con- 

 vertibility of, 93, 341 ; convertible, 

 theoretically, entirely into electri- 

 city, 398. 



Mechanical Engineers, Institution 

 of, address of Siemens, C. W., to, 

 79 ; funds of, 79 ; house for, pro- 

 posal to erect, 79 ; invitations to 

 visit Cornwall and Vienna Exhi- 

 bition, 80; in London annual meet- 

 ing of, proposed, 79 ; papers for 

 discussion before, 81. 



Mechanical record on the brain re- 

 producible by the mind, 206. 



Mechanical science, vast field for 

 discussing, 113. 



Meisterstuck, 388. 



Meldola, R., on oxygen in outer solar 

 atmosphere, 312. 



Memory and reasoning power, edu- 

 cation of, 276. 



Menelaus, mechanical puddling, re- 

 ference to, 149. 



Mercardier's radiophone, thermo- 

 phone, electrophone, 267. 



Merchant ships of mild steel, as 

 affected by Lloyd's registry, 146. 



Merchant shipping of United King- 

 dom, value of, 343 ; loss of, annu- 

 ally, 343 ; safety of, importance 

 of, 343 ; value of imports and 

 exports carried by, 343. 



Mercury unit, Rayleigh's, Lord, and 

 Siemens's, Werner, determinations 

 of, 324.' 



Mersey tunnel, reference to, 350. 



Meteorites, analysis of gases in, by 

 Flight, 301 ; aqueous vapour not 



