INDEX. 
725 
0 . 
Owen (R.). On the Fossil Mammals of Australia. — Part IV. Dentition and Mandible of Thylacoleo 
carnifex, with remarks on the arguments for its Herbivority, 213.-— For contents see p. 213. 
P. 
Parker (W. K.). On the Structure and Development of the Skull of the Common Frog ( Rana tempo- 
raria, L.), 137. — Summary, 185 ; comparison of the skull of the Common Frog with that of various 
other animals, 192 ; concluding remarks, 201 ; description of the plates, 206. 
Perry (S. J.). Magnetic Observations made at Stonyhurst College Observatory, from April 1863 to 
March 1870, 69. 
Polarization, galvanic, of metallic surfaces, 129 (see Varley). 
Potential of a uniform circular disk on itself, 98. 
Pratt (Archdeacon J. II.). On the Constitution of the Solid Crust of the Earth, 335. — For con- 
tents see p. 335. 
Q. 
Quantics, 17 (see Cayley). 
Quinine, experiments bearing on the supply of, 1 (See Broughton). 
R. 
Rankine (W. J. M.) . On the Mathematical Theory of Stream-lines, especially those with four Foci 
and upwards, 267. — Introduction, 267 ; cinematical principles, 269 ; properties of previously known 
classes of stream-lines, 275 ; theory of cycnogenous neoids, 280 ; dynamical propositions as to 
stream-line surfaces, 285 j summary of contents, 304; supplement, 305. 
Reed (E. J.). On the Unequal Distribution of Weight and Support in Ships, and its Effects in Still 
Water, in Waves, and in Exceptional Positions on Shore, 413. 
Resistance of fluids, 267 (see Rankine). 
Roscoe (H.E.) and Thorpe (T. E.). On the Measurement of the Chemical Intensity of Total Daylight 
made at Catania during the Total Eclipse of Dec. 22nd, 1870, 467. 
S. 
Sabine (Sir E.). Records of the Magnetic Phenomena at Kew Observatory. — No. IV. Analysis of the 
principal Disturbances shown by the Horizontal and Vertical Force Magnetometers of the Kew' 
Observatory, from 1859 to 1864, 307. 
Ships, distribution of weight in, 413 (see Reed). 
Silica, crystallization of, in the rhombic system, 361 (see Maskelyne). 
Silver, fluoride of, 321 (see Gore). 
Skull, development of, 137 (see Parker). 
Specific inductive capacity, 573 (see Gibson). 
Sphero-quartics, 585 (see Casey). 
Stonyhurst, magnetic observations at, 69 (see Perry). 
