THE 

 LONDON. EDINBURGH and DUBLIN 



PHILOSOPHICAL MAGAZINE 



AND 



JOURNAL OF SCIENCE, 



SUPPLEMENT to VOL. XVIII. THIRD SERIES. 



LXXIX. Examination of a Fourth E.vpeii7nent adduced by 

 Prof. Faraday in support of M. de la Rive's Theory, and 

 regarded by Dr. Fusinieri to be demo?istrative. By Dr. 

 Stephen Marianini, Acting Professor of Particidar and 

 Experimental Physics in the University of Modena, <$-c. 

 [Continued from p. 202.] 



Second Ar-ticle. Exami7iation of the Observations recently 

 made by Prof, de la Rive in support of his Theory, and 'which 

 Dr. Fusinieri has considered siifficient to afiswer the preceding 

 Objections*. 



X. T^R. AMBROGIO FUSINIERI seems to blame me 

 -*-^ for not having alluded, in my fourth Memoirf, to the 

 interesting work of M. de la Rive, entitled, " Inquiry into the 

 Cause of Voltaic Electricity|." I did not instantly allege 

 in my excuse the having written and sent the said memoir to 

 the Secretary of the Italian Society of Sciences, some time 

 previous to my becoming acquainted with the said work, which 

 had been kindly presented to me only in the November of 

 1836, by my illustrious colleague, Prof, de la Rive, this cir- 

 cumstance having little interest for the scientific, for whom I 

 intend to write, and still le.ss for science; but I applied myself 

 instead to study the work itself, as soon as I was able to do so. 

 Whoever does not know this production of M. de la Rive, 

 no doubt, on hearing how Signor Fusinieri speaks of it, would 

 believe that in the same manner in which, in my second me- 

 moir, I had examined all the arguments and principal experi- 

 ments brought forward by the Professor of Geneva in support 

 of his theory, and had shown the insufficiency of them with 

 other experiments; so also M. de la Rive might undertake to 

 examine my arguments, and might show the erroneousness of 

 them ; but wiiat would be his surprise, when setting himself to 

 read this work (without doubt having other claims to interest), 



* Annali dc Scicnzc del Regno Lombardo-Venelo, Bimesfrc iv., 1837, 

 p. 192. t Ibid. + Recherchcs, &c. 



Phil. Mag. S. 3. Vol. 18. No. 120. Suppl. July 1841. 2 M 



