VI 



Page 



On an Integrating Machine having a New Kinematic Principle. By Prof. 

 James Thomson, LL.D., F.R.S.E 262 



On an Instrument for calculating (j (x) xp (x) dx\ , the Integral of the 

 Product of two given Functions. By Prof. Sir W. Thomson, LL.D., F.R.S. 260 



Mechanical Integration of the Linear Differential Equations of the Second 

 Order with Variable Coefficients. By Prof. Sir W. Thomson, LL.D., 

 F.R.S 2C9 



Mechanical Integration of the general Linear Differential Equation of any 

 Order with Variable Coefficients. By Prof. Sir William Thomson, 

 LL.D., F.R.S 271 



February 10, 1876. 



Radiation. — Part ] 

 F.R.S. &c T ". 276 



On Repulsion resulting from Radiation. — Part III. By William Crookes 

 ~ R.S. & 



On Repulsion resulting from Radiation. — Part IV. By William Crookes, 

 F.R.S. &c 27! 



February 17, 1876. 



Researches upon the Specific Volumes of Liquids. — II. By T. E. Thorpe, 

 Ph.D., F.R.S.E., Professor of Chemistry in the Yorkshire College of 

 Science, Leeds , 283 



Researches upon the Specific Volumes of Liquids. — III. By T. E. Thorpe, 

 Ph.D., F.R.S.E., Professor of Chemistry in the Yorkshire College of 

 Science, Leeds 298 



Experimental Contributions to the Theory of Electrolysis. By Alfred 

 Tribe, Lecturer on Chemistry in Dulwich College 308 



Letter to the President from P. CunlifTe Owen, Director S. K. M 315 



February 24, 1876. 

 Letter to the President from T. J. Phillips Jodrell, Esq 316 



On determining the Depth of the Sea without the use of the Sounding-line, 

 and on an Attraction-meter. By 0. William Siemens, D.C.L., F.R.S., 

 M.I.C.E 317 



On Instruments for Recording the Direction and Velocity of Currents and 

 the Temperature of the Water at different Depths in the Ocean. By J. 

 Rymer Jones, of the Imperial Government Telegraphs, Japan 321 



List of Presents 330 



On the Theory of the Solution of a System of Simultaneous Non-linear 

 Partial Differential Equations of the First Order. By E. J. Nanson. . . . 337 



