INDEX. 
849 
L. 
Lacertilici, structure and development of the skull in, 595 (see Parker). 
Laplace’s functions, 379 (see Niven). 
Locliaber, parallel roads of, 663 (see Prestwich). 
M. 
Magnetic deflection of lines of molecular force, 653. 
Magnetization, effect of stress on, 55 (see Thomson). 
Maskelyne (X. S.), phosphorescence of various crystals in high vacua, 661. 
Maxwell (J. C.). On Stresses in Rarified Gases arising from Inequalities of Temperature, 231; 
appendix, 249. 
Microrheometer, 275. 
Molecular trajectory, 135, 641 (see Crookes). 
Moon, secular acceleration of, 475 (see Darwin). 
Moulton (J. F.) and Spottiswoode (W.), 165 (see Spottiswoode). 
N. 
Negative pole, phenomena relating to the dark space around, 135 (see Crookes). 
Niven (W. D.). On certain Definite Integrals occurring in Spherical Harmonic Analysis, and on the 
Expansion, in Series, of the Potentials of the Ellipsoid and of the Ellipse, 379.—General theorems 
in differentiation, 388; different forms of tesseral and sectorial harmonics, 389; potentials of 
ellipsoids, 403; potential of electric currents in circular circuits, 412. 
O. 
Obliquity of the ecliptic, change of, in remote times, 462 (see Darwin). 
Otheoscope, 120 (see Crookes). 
Oxygen, spectra of, 37. 
P. 
Parallel roads of Locliaber, 663 (see Prestwich). 
Parker (W. K.). The Crooxian Lecture. On the Structure and Development of the Skull in the 
Lacertilia.—Part I. On the Skull of the Common Lizards ( Lacerta agilis, L. viridis, and Zootoca 
vivipara), 595.—Stages of development, 616; conclusion, 634; explanation of plates, 638. 
Phosphorescence, produced by molecular impact, 142, 641; of thin films, 150. 
Potentials, of ellipsoids, 403; of certain electric currents, 412. 
Precession of a viscous spheroid, 447 (see Darwin). 
Prestwich (J.). On the Origin of the Parallel Roads of Lochaber, and their Bearing on other 
Phenomena of the Glacial Period, 663 (for contents see p. 663). 
R. 
Radiometer, electrical, 140. 
Radiometer, 87 (see Crookes); with very small vanes, 768 (see Reynolds). 
Refractive indices, comparison of, with square root of specific inductive capacities, 444. 
Reynolds (O.). On Certain Dimensional Properties of Matter in the Gaseous State.—Part I. Experi¬ 
mental, 727.—Part II. Theoretical, 772 (for contents see p. 772). 
Reynolds (O.). Remarks on his Researches op Thermal Transpiration, 255. 
