3260 Energy of Sun-light 



Solar light, chemical intensity at different 



altitudes of sun (Baxendell and Boscoe). 



Clausius, R. Ph. Mg. 32 (1866) 41-. 

 , curious effect. Percival, J. G. Silliman 



J. 12 (1827) 164-. 

 , diminution of intensity in atmosphere. 



Forbes, J. D. Edinb. B. S. P. 1 (1845) 55-. 



, transmission through Earth's atmo- 

 sphere. Abney, (Capt.) W. de W. [1888-92] 

 Phil. Trans. (A) 178 (1888) 251- ; 184 (1894) 1-. 



radiation, influence of water in atmosphere. 

 Abney, (Capt.) W. de W., <& Festing, (Col.) . 

 E. S. P. 35 (1883) 328-. 



Spectrum analysis and rain-band. Jameson, 

 H. G. [1888] Eastbourne NH. S. T. 2 

 (1886-94) 62-. 



of atmosphere and that of water vapour. 

 Janssen, J. B. A. Ep. 36 (1866) (Sect.) 11. 



Transparency of atmosphere and flames. 



Allard, E. , C. E. 81 (1875) 1096- ; Par. 



Mm. Sav. Etr. 25 (1877) No. 2, 48 pp. 

 (Allard). Becquerel, A. C. 



C. E. 82 (1876) 1300-. 



, instrument to measure (diaphano- 

 meter). Saussure, H. B. Turin Mm. Ac. 4 

 (1788-89) 425-. 



and law of extinction of solar rays in 



passing through it. Forbes, J. D. Phil. 

 Trans. (1842) 225-. 



, photometer for. Delarive, A. C. E. 



64 (1867) 1221-. 



, probabilities applied to variations in. 



Seidel, L. Miinch. Sb. 2 (1863) 320-. 

 and vision of distant objects. Meidinger, 



H. Karlsruhe Nt. Vr. Vh. 11 (1891) (Ab.) 360-. 



3260 Energy of Sun-light. 

 (See also Astronomy 4200 ; Meteor- 

 ology 0930.) 



Actinometric measurements of solar heat on 

 Alps. Eizzo, G. B. Spet. It. Mm. 26 

 (1898) 79-; N. Cim. 7 (1898) 120- ; Spet. 

 It. Mm. 27 (1899) 10-. 



. Mt. Whitney. Langley, S. P. 



U. S. Sig. Serv. Pp. No. 15 (1884) 242 pp. 



observations, accuracy obtainable in. 

 Saveljev, E. N. Es. Ps.-C. S. J. 25 (Ps.) 

 (1893) 1- ; A. C. 28 (1893) 394- ; 29 (1893) 260-. 



, (Saveljev). Wild, H. A. C. 



29 (1893) 283-. 

 , ( ). Chvolson, 0. A. C. 30 



(1893) 141-. 

 , . Saveljev, E. N. A. C. 4 



(1895) 424-. 

 on Mt. Blanc, 1887. Vallot, J. Mt. 



Blanc Obs. A. 2 (1896) 77-. 



during partial solar eclipse. 

 Vallot, J., t Vallot, (Mme.) G. Mt. Blanc 

 Obs. A. 2 (1896) 71-. 



Actinometry. Radau, R. Mon. Sc. 19 (1877) 



524-, 563-. 

 . Frolich, 0. [1883-87] Elekttech. Z. 5 



(1884) 3- ; A. Ps. C. 21 (1884) 1- ; Wien Met. 



X. 19 (1884) 209- ; Met. Z. 1 (1884) 247-; 



A. Ps. C. 30 (1887) 582-. 



Velocity, Wave-Length, etc. 3400 



Actinometry, chemical, at different heights and 



temperatures. Vallot, J., & Vallot, (Mme.) 



G. Mt. Blanc Obs. A. 3 (1898) 81-. 

 , Langley's measurement. Maurer, J. Z 



Instk. 6 (1886) 237-. 

 , slow, process. Downes, A. C. N. 42 (1880) 



178. 

 , use of ice calorimeter. Michelson, V. A. 



Es. Ps.-C. S. J. 26 (Ps.) (1894) 1-; J. de 



Ps. 4 (1895) 578-. 

 Atmospheric pressure, influence on chemical 



action of direct sunlight. Andresen, M. 



Mt. Blanc Obs. A. 4 (1900) 1-. 

 Solar energy, conservation. Siemens, (Sir) 



C. W. Franklin I. J. 84 (1882) 57-. 

 , (Siemens). Archibald, E. D. Nt. 



25 (1882) 504. 

 , (Archibald, Morris, Hunt and Fitz 



Gerald). Siemens, (Sir) C. W. Nt. 25 (1882) 



504- , 603; 26(1882)80. 

 , (Siemens). Morris, C. Nt. 25 (1882) 



601-. 



-, (). Hunt,T.S. Nt. 25 (1882) 602-. 

 , ( ). FitzGerald, G. F. Nt. 26 



(1882) 80. 

 , ( ). Faye, H. A. E. C. E. 95 



(1882) 612-. 

 , (Faye). Siemens, (Sir) C. W. C. E. 



95 (1882) 769-. 

 , _ (Siemens). Him, G. A. C. E. 95 



(1882) 812-. 



- , (Hirn). Siemens, (Sir) C. W. C. E. 



95 (1882) 1037-. 

 , . Faye, H. A. E. C. E. 95 (1882) 



1110-. 

 , (Siemens). Hirn, G. A. C. E. 95 



(1882) 1195-. 

 , . Tommasi, D. Les Mondes 3 (1882) 



500-. 

 , (regenerative theory). Cook, E. H. 



Ph. Mg. 15 (1883) 400-. 

 , (Cook). Siemens, (Sir) C. W. Ph. 



Mg. 16 (1883) 62-. 

 , (Faye and Hirn). Siemens, (Sir) 



C. W. C. E. 96 (1883) 43-. 

 physics, questions. Siemens, (Sir) C. W. 



[1883] E. I. P. 10 (1884) 315- . 

 Sun, does Earth receive any direct heat from? 



Howorth, H. H. Manch. Lt. Ph. S. P. 13 



(1874) 131-. 

 Sun's temperature. Le Cliatelier, H. C. E. 



114 (1892) 737-, 864. 



VELOCITY, WAVE-LENGTH, ETC., 

 OF RADIATION. 



3400 General. 



(See also 2990.) 



Displacements, continuous, of particles of 



medium, formulae connected with. Tait, 



P. G. Edinb. E. S. P. 4 (1862) 617-. 

 Fourier's double integrals, application to optical 



problems. Godfrey, C. [1899] Phil. Trans. 



(A) 195 (1901) 329-. 

 Heat, light and colours. Blackburne, W. 



Tilloch Ph. Mg. 6 (1800) 334-. 



VOL. III. 



353 



