1094 
n’DEX. 
E. 
Eclipse of the sun, April 16, 1893, jireliminary report on the results ohtaiiiecl with the j^i’ismatic cameras 
daring the total, 711 (see Lockyer). 
Electric and luminiferous medium, a dynamical theory of the, 719 (see Larmor). 
Electrolytic iron, on the photographic arc spectrum of, 983 (see Locky’Er). 
E. 
Flame spectra at high temperatures. —Part II. The spectrum of metallic manganese, of alloys of 
manganese, and of compounds containing that element, 1029.—Part III. The spectroscopic 
jdienoniena and thermo-chemistry of the Bessemer process, 1041 (see PIartley). 
G. 
Gases, on the specific heats of, at constant volume.—Part 11. Carbon dioxide, 943.—Part 111. The 
specific heat of carbon dioxide as a function of temperature, 961 (see Joey). 
Grinding section-plates and prisms of crystals of artificial preparations accurately iii tbe desired directions, 
an in.strument for, 887 (see Tutton). 
H. 
Hartley (W. N.). Pdame Spectra at High Temperatures.—Part II. The Spectrum of Metallic 
Manganese, of Alloys of Manganese, and of Compounds containing that Element, 1029.—Part III. 
The Spectroscopic Phenomena and Thermo-Chemistry of the Bessemer Process, 1041. 
I. 
Instrument for grinding section-plates and prisms of crystals of aititicial preparations accurately in the 
desired directions, an, 887 (see Tutton). 
Instrument of precision for producing monochromatic light of any desired wave-length, and its use in tlie 
investigation of the optical properties of crysfals, 913 (see Tut'JOn). 
Iron, on the photographic arc spectrum of electrolytic, 983 (see Locrver). 
Iron meteorites, on the jjhotographic arc spectrum of, 1023 (see Lockyer). 
J. 
JOLY (J.). On the Specific Heats of Gases at Constant Volume.—Part II. Carbon Dioxide, 943.— 
Part IIP The Specific Heat of Carbon Dioxide as a Function of Temperature, 961. 
