INDEX. 



807 



not a member of a university, 238, 

 272; and Fresnel, 241 ; inadequate 

 appreciation of, 243, 244, 277 ; 246 ; 

 lecturer at the Royal Institution, 

 249, 264 ; recognition of, by Frencli 

 scientists, 251 ; quoted on universi- 

 ties, 261 ; not connected with the 

 Mathematical School of Cambridge, 

 266 ; 294 ; dynamical view of light, 

 370 ; revival of kinetic view of nature, 

 ii. 8 ; Euler's ether theory, 9 ; ' Out- 

 lines of Experiments and Inquiries 

 respecting Sound and Light,' 17 ; 

 quoted, lb., 20 ; interference of light, 

 18 ; accuracy of Newton's experi- 

 ments, 19 ; methods of Laplace, 20 ; 

 "interference," 21; polarisation of 

 light, 22; rejects projectile theory of 

 light, ib.; quoted on Malus's discovery 

 of polarisation of light by reflection, 

 23 ; 24 ; memoir of, 26 ; ' Works ' 

 quoted, 27 ; transverse vibrations of 

 light, 28 ; futility of astronomical 

 view of nature, 28 ; theory of elas- 

 ticity, 30 ; theory of capillarity, 33 ; 

 nature of the ether, 40, 43 ; analogy 

 of optical and acoustical phenomena, 

 50; " luminiferous ether," 69, 70, 

 89 ; "elastic medium" in space, 84; 

 referred to, 86, 91, 95 ; hrst used 

 the term " energy," 98, 115 ; his work 

 theoretical, 99 ; value of one horse- 

 power, 99; 'Lectures,' 102; theory 



of heat, 103 et seq.; heat a form of 

 motion, 104 ; undulatory theory, 

 180; 341, 344; (see Sir Norman 

 Lockyer), 361 ; colour theory, 480 ; 

 'Essay on Music,' 489. 



Zach, von, ' Monatliche Correspondenz,' 

 i. 41 ; 54 ; first international organ 

 for astronomical observations, 167 ; 

 astronomical achievements, 176; bio- 

 graphical, 177; 182; 422. 



Zeemann, magnetism and light, ii. 197. 



Zeiss, Carl, improvements in the micro- 

 scope, ii. 229. 



Zeller, E., i. 162; 'Philosophie der 

 Griechen,' ii. 3, 207 ; quoted, 286. 



Zeno, unity of all existence, ii. 3 ; 

 286. 



Zeuner, the steam-engine, ii. 133 ; con- 

 troversy with Hirn, 135 ; (see Claus- 

 ius), ib. ; heat engines, 175 ; 185 ; 

 statistics, 566. 



Ziegler, 'Doctrine of Descent,' ii. 349. 



Zittel, A. von, ' Gesch. der Geologic,' ii. 

 212. 



Zcillner, F., historical and controversial 

 writings, ii. 107 ; Poggendorf and 

 Mayer's MS., 114 ; speculations of, 

 192 ; ' Wissenschaftliche Abhand- 

 lungen,' 716. 



Zschokke, H., educational influence of, 

 in Germany, i. 257. 



Zwingli, educational work of, i. 255. 



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