Academy, Saturday 28th February 1874
Professor Domenico Cipolletti has drawn attention, in the
Nazione, to the coincidence of the times of appearance and disappearance of the
aurora borealis, seen at Florence on the evening of February 4, and those of
the grand auroral display witnessed at the same spot February 4, 1872. The
aurora was also seen at Milan and other parts of northern Italy on the 4th, on
which evening strong magnetic disturbance was noted at the Vienna and Munich
observatories. Professor Cipolletti exhorts observers to watch with special care
for any manifestations of sudden light in Jupiter's belts, which have been
proved by the observations of Lassell, Proctor, and others, to exhibit the
brightest colours at those periods, in which the aurora borealis was most
strongly marked.
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