34; Mr. Faraday's Supplementary Note to Experimental 



The remaining iron held in sohition was removed by 

 heating it with excess of carbonate of lime, in the manner 

 pointed out by me in the Phil. Trans, for 1821*, when after 

 filtration, a liquid remained of that peculiar tint of pale 

 green which characterizes the solutions of nickel, and of con- 

 siderable intensity. 



The presence of this metal was ascertained on concen- 

 trating the solution by the usual tests, and its quantity con- 

 cluded, viz. 0'86 grains, or 4*61 percent, on the specimen 

 analysed. 



Thus it appears that the specimen brought home by 

 Capt. Alexander has equal claim to a meteoric origin with 

 any of those masses of native nickeliferous iron which have 

 been found in different localities, and to which that origin 

 has, without other evidence, been attributed. 



All those specimens, however, have, so far as I know, 

 been insulated single masses. But what constitutes the pe- 

 culiar and important feature of this discovery of Capt. Alex- 

 ander, is the fact stated by him of the occurrence of masses 

 of this native iron in abundance, scattered over the surface 

 of a considerable tract of country. If a meteoric origin be 

 attributed to all these, a shower of iron must have fallen ; and 

 as we can imagine no cause for the explosion of a mass of 

 iron, and can hardly conceive a force capable of rending 

 into fragments a cold block of this very tenacious material, 

 •we must of necessity conclude it to have arrived in a state of 

 fusion, and been scattered around by the assistance of the 

 air or otherwise, in a melted, or at least softened state. 



VII. Supplementary Note to Experimental Researches in 

 Electricity. — Eleventli Series. By Michaei, Faraday, JSsy., 

 D.C.L. F.R.S. Fullerian Prof. Chem. Royal Institution, 

 Corr. Memh. Royal and Imp. Acadd. of Sciences, Paris, 

 Petcrsburgk, Florence, Copenhagen, Berlin, S^x. Sj-c.\ 



1307. T HAVE recently put into an experimental form 

 J- that general statement of the question of specific 

 inductive capacity which is given at No. 1252 of Series XI., 

 and the result is such as to lead me to hope the Council will 

 authorize its addition to the paper in the form of a supple- 

 mentary note. Three circular brass plates, about five inches 

 in diameter, were mounted side by side upon insulating pil- 



* Sir John Herschel's paper here alluded to will be found in Phil. Mag. 

 First Series, vol. lix. p. 86 ; and in the Annals of Philosophy, New Series, 

 vol. iii. p. 95. — Edit. 



t From the Philosophical Transactions for 1838, Part i. 



