1872.] M. J. Raynaud on Multiple-Battery Besistance. 159 



distant from the end by about T Vpart of its length. Near the end of the 

 coil, the directions of force converge to a point as exactly as possible at the 

 centre of the end of the coil. 



The author then describes the graphic process by which he has resolved 

 the entire magnetic forces into constituent parts in the directions longitu- 

 dinal and transversal to the magnet at every station, and gives tabular 

 statements of the magnitudes of those constituent parts. A comparison is 

 made with the results of an assumed law, but no satisfactory agreement is 

 obtained. 



An Appendix is subjoined, containing an investigation by James Stuart, 

 Esq., of the theoretical attraction of a galvanic coil upon a small mass of 

 magnetism, and a tabular comparison of the numerical values obtained from 

 this investigation with the numerical values found by experiment. The 

 agreement is satisfactory. 



IV. u On a mode of Measuring the Internal Resistance of a Multiple 

 Battery by adjusting the Galvanometer to Zero." By M. Jules 

 Raynaud. Communicated by Prof. Stokes, Sec. R.S. Re- 

 ceived January 11, 1872. 



The author points out that the method given by Mr. Henry Mance for 

 this purpose, and described in vol. xix. of the f Proceedings of the Royal 

 Society' (p. 252), is identical with that which he had himself previously 

 given, and which is described in the ' Comptes Rendus ' for July 22, 1867 ; 

 at least the only difference is that M. Raynaud prescribes putting the poles 

 in connexion with the earth, which of course is not necessary. 



February 15, 1872. 



GEORGE BIDDELL AIRY, C.B., President, succeeded by Mr. C. 

 B. Vignoles (as Deputy appointed by the President), in the 

 Chair. 



The President, on the part of the Council, submitted to the Meeting the 

 following Address of congratulation to be presented to the Queen : — 



"We, Your Majesty's most dutiful and loyal subjects, the President, 

 Council, and Fellows of the Royal Society of London for improving 

 Natural Knowledge, desire humbly to offer to Your Majesty our sincere 

 congratulations on the restoration to health of His Royal Highness 

 the Prince of Wales. 



"Having shared in the deep anxiety of Your Majesty and the 

 Nation whilst His Royal Highness lay prostrate under his dangerous 



