[ xi ] 
I. 
Instrument for grinding section-plates and prisms of crystals of artificial preparations accurately in the 
desired directions, an, 887 (see Tcttox). 
Instrument of precision for producing monochromatic light of any desired icavc-length, and its use in the 
investigation of the optical properties of crystals, 913 (see Tutton). 
Iron, on the photographic arc spectrum of electrolytic, 983 (see Lockyer). 
Iron meteorites, on the photographic arc spectrum of, 1023 (see Lockter). 
J. 
Jolt (J.)- On the Specific Heats of Gases at Constant Volume.—Part 11. Carbon Dioxide, 943.— 
Part HI. The Specific Heat of Carbon Dioxide as a Function of Temperature, 961. 
L. 
L.'kKiiOK (J.). A Dynamical Theory of the Electric and Luminiferous Medium, 719. 
Light, on the reflection and refraction of, 823 (see Schott). 
Light of any desired icave-lengtli, an instrument of precision for producing monochromatic, 91.3 (see 
Tdttox). 
Liqtcids, on the relations between the viscosity (internal friction) of, and their chemical nature.— 
Bakeriax Lecture, 397 (see Thorpe and Dodger). 
Lockyer (J. H.). On the Photographic Arc Spectrum of Electrolytic Iron, 983. 
Lockyer (.J. N.). On the Photographic Ai’c Spectrum of Iron Meteorites, 1023. 
Lockyer (J. N.). Preliminai’y Report on the Results obtained with the Prismatic Cameras duffing the 
Total Eclipse of the Sun, April 16, 1893, 711. 
M. 
MacMahon (P. a.), a Cei’tain Class of Generating Functions in the Theory of ISTumbers, 111. 
Mathematical theory of evolution, contributions to the, 71 (see Pearson). 
Meteorites, on the photographic arc spectrum of iron, 1023 (see Lockyer). 
X. 
Numhers, a certain class of generating functions in the theory cf. 111 (see MacMahon). 
0 . 
Oxy-hydrogen hloic-pipe spectra, 161 (see Hartley). 
P. 
Paraffins, on the ratio of the specific heats of the, and their monohalogen derivatives, 1 (see Capstick). 
Pearson (K.). Contributions to the Mathematical Theoiy of Evolution, 71. 
Plane cubics, on, 247 (see Scott). 
