816 
INDEX. 
C. 
Carbonic-acid gas, electric decomposition of, 83. 
Cayley (A.). A Memoir on the Transformation of Elliptic Functions, 397. — The general problem, 398 ; 
the O/c-modular equations, 400; equation -systems for the cases n =3, 5, 7, 9, 1 1 , 402 ; the fU-form, 
order of the systems, 404; the modular equation, 409 ; the multiplier equation, 420 ; the multiplier 
as a rational function of u, v, 423 ; theorem in connexion with the multiplication of elliptic functions, 
427; the transformations n= 3, 5, 7, 'll, 429; the general theory of ^-transcendents, 436 ; the 
four forms of the modular equation, and the curves represented thereby, 450. 
Chlorine, analogy of, to ozone, 103. 
Clark (L.). On a Standard Voltaic Battery, 1. 
Clifford (W. K.). On Mr. Spottiswoode’s Contact Problems, 705. — The contact of conics with 
surfaces of the order n, 706 ; the contact of quadric surfaces with surfaces of order n, 713. 
Coal-measures, fossil plants of the, 41, 675. 
Contact of conics with surfaces of order n, 706; of quadric surfaces with surfaces of order n, 713. 
Crookes (W.). On Attraction and Repulsion resulting from Radiation, 501. 
D. 
Daylight, total intensity of, 655 (see Roscoe). 
Dendroccela, 106 (see Moseley). 
Detonation, 337 (see Abel). 
Dynamite, detonation of (see Abel). 
E. 
Echinoidea, on the, of the ‘Porcupine’ Deep-sea Dredging-Expeditions, 719. 
Electromotive force, a practical standard of, 1 . 
Electrotorsion, 529, 560. 
Elliptic functions, 397 (see Cayley). 
Explosive agents, 337 (see Abel). 
F. 
flashes as fog-signals, 232. 
Flower (W. H.). On a newly discovered Extinct Ungulate Mammal from Patagonia, Homalodontotherium 
Cunninghami, 173. 
Fog, action of, on sound, 184, 209, 214, 216. 
Fog-signals, 186 &c. 
Fossil plants of the Coal-measures, 41, 675. 
G. 
Gore (G.). On Electrotorsion, 529. — Note by SirW. Thomson, 560. 
Gun-cotton, detonation of (see Abel). 
H. 
Homalodontotherium Cunninghami, 173. 
India, winds of Northern, 563. 
I. 
