INDEX. 
501 
Nototherium, 41. 
N. 
0. 
Owen (R.). On the Fossil Mammals of Australia. — Part V. Genus Nototherium, 41. — Part VI. Genus 
Phascolomys, Geoffr., 173. — Part VII. Genus Phascolomys : species exceeding the existing ones in 
size, 241. 
Oxygen, formation of ozone from, by electricity, 447. 
Ozone, 435 (see Brodie). 
P. 
Paraffins, normal, 111 (see Schorlemmer). 
Perry (S. T.). Magnetic Survey of the East of France in 1869, 7. 
Phascolomys, 173, 241. 
Pteromys volans, muscles of, 159. 
R. 
Reciprocal surfaces, 83 (see Cayley) . 
S. 
Sabine (Sir E.). Contributions to Terrestrial Magnetism. — No. XIII., 353. — General tables of obser- 
vations for latitudes 40° N. to 80° N. and a few beyond, 359 ; discussion, 425 ; comparison of the 
values of the magnetic elements here given with those of Gauss and Weber, 431. 
Schorlemmer (C.). On the Normal Paraffins, 111. — Normal amyl hydride or pentane, 113; normal 
hexyl hydride or hexane, 116; hexane from mannite, 118; normal dipropyl, 120; normal heptyl 
hydride, or heptane, 120 ; normal dibutyl or octane, 129. 
Sigillarice, 197. 
Sound, experimental determination of the velocity of, 1, 
Specific gravity of mixtures, 338. 
Spottiswoode (W.) . On the Contact of Surfaces, 259. — Preliminary formulae and transformations, 260 ; 
conditions of contact, 263 ; modes of contact, 267 ; on surfaces having superficial contact with given 
surfaces, 275. 
Stone (E. J.). An Experimental Determination of the Velocity of Sound, ]. 
Stuart (J.). Investigation of the Attraction of a Galvanic Coil on a small Magnetic Mass, 493. 
Surfaces, reciprocal, 83 (see Cayley) ; contact of, 259 (see Spottiswoode). 
W. 
Waves of light, computed lengths of, 89 (see Airy). 
Williamson (W. C.). On the Organization of the Fossil Plants of the Coal-measures. — Part II. 
Lycopodiacece, Lepidodendra and Sigillarice, 197. — Description of the plates, 232 ; supplementary 
observations, 235. — Part III. Lycopodiacece (continued), 283. — Appendix, 310. 
Wombat, 173, 241. 
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