yi CONTENTS. 



Page 



Report of the Committee requested "to report to the Meeting at 

 Oxford as to the Scientific Objects to be sought for by continuing 

 the Balloon Ascents formerly undertaken to great Altitudes." By 

 the Rev. Robert Walker, M.A., F.R.S., Reader in Experimental 

 Philosophy in the University of Oxford 43 



Report of Committee appointed to prepare a Self-Recording Atmo- 

 spheric Electrometer for Kew, and Portable Apparatus for observing 

 Atmospheric Electricity. By Professor W. Thompson, F.R.S 44 



Experiments to determine the Effect of Vibratory Action and long- 

 continued Changes of Load upon Wrought-iron Girders. By Wil- 

 liam Fairbairn, Esq., LLD., F.R.S 45 



A Catalogue of Meteorites and Fireballs, from a.d. 2 to a.d. 1860. 

 By R. P. Greg, Esq., F.G.S 48 



Report on the Theory of Numbers. — Part II. By H. J. Stephen 

 Smith, M.A., F.R.S., Savilian Professor of Geometry in the Uni- 

 versity of Oxford , 120 



On the Performance of Steam-Vessels, the Functions of the Screw, and 

 the Relations of its Diameter and Pitch to the Form of the Vesssel. 

 By Vice-Admiral Moorsom 172 



Report on the Effects of long-continued Heat, illustrative of Geological 

 Phenomena. By the Rev. W. Vernon Harcourt, F.R.S., F.G.S. 175 



Second Report of the Committee on Steam-ship Performance 193 



Interim Report on the Gauging of Water by Triangular Notches 217 



List of the British Marine Invertebrate Fauna 217 



