CONTEXTS OF VOL. XVI. FIFTH SERIES. All 
Page 
Mr. F. Y. Edgeworth on the Physical Basis of Probability . . 433 
Messrs. J. Trowbridge and E. K. Stevens on the Electromotive 
Force of Allovs 435 
Prof. Tait on the Laws of Motion 439 
Mr. D. J. BlaiMev's Experiments on the Telocitv of Sound 
in Air * 447 
Proceedings of the Geological Society : — ■ 
Prof. T. G. Bonney on the Geology of the South Coast of 
Devon from Torr Cross to Hope Cove 455 
On the Induction produced by Variation of the Intensity of 
the Electric Current in a Spherical Solenoid, by M. Quet. . 456 
On the Eelation between the Internal Friction and Resistance 
of Solutions of Salts in various Solvents, by Prof. E. Wiede- 
mann 459 
Spectroscopic Xotes, by Prof. C. A. Toung 460 
The Fluorescence of Iodine Vapour, by E. Lommel 463 
Classification of Meteorites, by Professor Tschermak 464 
Prof. Ferret's Theory of Atmospheric Currents, by D. D. Heath 464 
Index 465 
ERRATA. 
Page 147, lines 28, 29, for and, on account of the disturbances, neglected; 
read and on account of disturbances neglected, 
— 152,atfoot,/orI= — ^ read 1=^ 
— 156, instead of the equations 
q =AI = &e. 
? ' = AT= &c. 
read AI „ 
q = "R = 
, AT e 
q = ~bT = ' 
where R is the total resistance in circuit ; 
— 310, line 1, for friction read fiction 
— 390. line 33, for a velocity g read an acceleration g 
