Page:Hamel Telegraph history England 1859.pdf/43

39 1819 and 1820, on making known his own observations, he had just said a word about Romagnosi as pioneer in the field on which he became loaded with laurels.

In Alessandro de Giorgi's collection of the works of Romagnosi, printed at Milan, there is prefixed to the first volume a likeness of him, engraved from a painting by Ernesta Bisi. I wish somebody would copy it by photographic means, and then multiply this portrait by the same process, for distribution among the lovers.of electrical science. I can, for a similar purpose, furnish the portrait of Baron Schilling.

Arago had hardly got to Paris, when, on the 4th September, he communicated to the Academy of Sciences what he had seen at Geneva. He was requested to repeat Oersted's experiment, which he did at the sitting of the Academy on the 11th. Two weeks after that Arago communicated to the Academy his observation that the galvanic conductors attracted needles that were not magnetised.

It deserves here to be remembered that, from Aldini's book, it was known that the chemist Giuseppi Mojon, at Genoa, had, before 1801, observed in unmagnetised needles, exposed to the galvanic current, a sort of polarity. Izarn