CONTENTS. xi 



THE ELECTROMAGNETIC THEORY OF LIGHT. 



PAGE 



XL ON DOUBLE REFRACTION AND THE DISPERSION OF COLORS 



IN PERFECTLY TRANSPARENT MEDIA, 182 



[Amer. Jour. Sci., ser 3, vol. xxiu, pp. 262-275, 1882.] 



XII. ON DOUBLE REFRACTION IN PERFECTLY TRANSPARENT MEDIA 

 WHICH EXHIBIT THE PHENOMENA OF CIRCULAR POLARIZA- 

 TION, - 195 



[Amer. Jour. Sci., ser. 3, vol. xxm, pp. 460-476, 1882.] 



XIII. ON THE GENERAL EQUATIONS OF MONOCHROMATIC LIGHT IN 



MEDIA OF EVERY DEGREE OF TRANSPARENCY, 211 



[Amer. Jour. Sci., ser. 3, vol. xxv, pp. 107-118, 1883.] 



XIV. A COMPARISON OF THE ELASTIC AND THE ELECTRICAL 



THEORIES OF LIGHT WITH RESPECT TO THE LAW OF 

 DOUBLE REFRACTION AND THE DISPERSION OF COLORS, - 223 



[Amer. Jour. Sci., ser. 3, vol. xxxv, pp. 467-475, 1888.] 



XV. A COMPARISON OF THE ELECTRIC THEORY OF LIGHT AND 

 SIR WILLIAM THOMSON'S THEORY OF A QUASI-LABILE 

 ETHER, 232 



[Amer. Jour. Sci., ser. 3, vol. xxxvn, pp. 129-144, 1889.] 



MISCELLANEOUS PAPERS. 



XVI. REVIEWS OF NEWCOMB AND MICHELSON'S "VELOCITY OF 



LIGHT IN AIR AND REFRACTING MEDIA" AND OF 

 KETTELER'S " THEORETISCHE OPTIK," 247 



[Amer. Jour. Sci., ser. 3, vol. xxxi, pp. 62-67, 1886.] 



XVII. ON THE VELOCITY OF LIGHT AS DETERMINED BY FOUCAULT'S 



REVOLVING MIRROR, - 253 



[Nature, vol. xxxui, p. 582, 1886.] 



XVIII. VELOCITY OF PROPAGATION OF ELECTROSTATIC FORCE, 255 



[Nature, vol. LIII, p. 509, 1896.] 



XIX. FOURIER'S SERIES, 258 



[Nature, vol. LIX, pp. 200 and 606, 1898-99.] 



XX. RUDOLF JULIUS EMANUEL CLAUSIUS, - 261 



[Proc. Amer. Acad., new series, vol. xvi, pp. 458-465, 1889.] 



XXI. HUBERT ANSON NEWTON, - 268 



[Amer. Jour. Sci., ser. 4, vol. ill, pp. 359-376, 1897.] 



