162 MR. FARADAY’S EXPERIMENTAL RESEARCHES IN ELECTRICITY. 
electricity with different degrees of facility in different directions; and it is not 
unlikely that where a mass is made up of a number of crystals heterogeneously 
associated, an effect approaching to that of actual division may occur ( 127 -); 
or the currents of electricity may become more suddenly deflected at the con¬ 
fines of similar crystalline arrangements, and so be more readily and completely 
discharged within the mass. 
currents of electricity which are proportionate in strength to the conducting power of the bodies ex¬ 
perimented with (211.). 
Royal Institution, November 1831. 
Note . —In consequence of the long period which has intervened between the reading and printing of 
the foregoing paper, accounts of the experiments have been dispersed, and, through a letter of my own 
to M. Hachette, have reached France and Italy. That letter was translated (with some errors), and 
read to the Academy of Sciences at Paris, 26th December, 1831. A copy of it in Le Temps of the 
28th December quickly reached Signor Nobili, who, with Signor Antinobi, immediately experimented 
upon the subject, and obtained many of the results mentioned in my letter; others they could not ob¬ 
tain or understand, because of the brevity of my account. These results by Signori Nobili and Ajt- 
tinori have been embodied in a paper dated 31st January 1832, and printed and published in the 
number of the Antologia dated November 1831, (according at least to the copy of the paper kindly sent 
me by Signor Nobili). It is evident the work could not have been then printed; and though Signor 
Nobili, in his paper, has inserted my letter as the text of his experiments, yet the circumstance of 
back date has caused many here, who have heard of Nobili’s experiments by report only, to imagine 
his results were anterior to, instead of being dependent upon, mine. 
I may be allowed under these circumstances to remark, that I experimented on this subject several 
years ago, and have published results. (See Quarterly Journal of Science for July 1825. p. 338.) The 
following also is an extract from my note-book, dated November 28, 1825 : “ Experiments on induction 
by connecting wire of voltaic battery : —a battery of four troughs, ten pairs of plates, each arranged 
side by side—the poles connected by a wire about four feet long, parallel to which was another similar 
wire separated from it only by two thicknesses of paper, the ends of the latter were attached to a galva¬ 
nometer :■—e xhibi ted no action, &c. &c. &c.—Could not in any way render any induction evident from 
the connecting wire.” The cause of failure at that time is now evident (79.).—M. F. April 1832. 
