72 Scientific Intelligence. 
one smi TS nea The spectrum of the acute cusps of the sun 
as also 
me Prof. ieee made se — ations of the corona, 
which revealed two bright lines, one r EK, the other probably 
totality was able to catch the lines in ‘the spectrum of one pro- 
tuberance which he had observed before the eclipse. He saw the 
hydrogen lines and D,, but none of the iron lines, 
“ Prof. Blaserna examined whether the corona contained po- 
larized light. Using a Savart pain applied to a telescope 
of moderate magnifying pow = he was able to examine careful y 
three points situated about 45° from each other (on the sun’s 
limb). The polarization was most pronounced, and very nearly 
the same as that of a portion of clear sky observed soon after, 
about 50° from the sun. At the distance of a diameter and a 
half from the moon every trace of polarization vanished, so that 
the influence of the air was — eliminated in the observed 
phenomenon 
“The plane of polarization was found at all points either radial 
or tangential to the sun’s limb [the observations not deciding 
with certamty which], It remains therefore established that the 
corona is —— and contains reflected light derived from the 
photosphe 
“The a mai astronomical part assigned to myself was executed 
to the best of my ability, so far as the variable condition of the 
sky permitted. I was - le ip act oe me with some precision 
the instants of first ¢ aka ginning of totality, and of 
its ending (the last roscoe otonda). besides making some other 
observations to be referred to hereafter, 
“The magnetic and meteorological observations which since 
my. Augu 
emg begged tration +e pict in the labors of the 
mmis 
The division at Terranova found themselves in circumstances 
very similar to those which prevailed at Augusta; here also the 
observers were annoyed by tempestuous winds and oppos 
clouds ; i. = 1 RET some good and not unimportant 
observ: obtained. rof. Lorenzoni detected in the 
prsaorsi “of a pecsabarnaie: besides the h drogen lines and D, a 
large number — bright lines (‘more than twenty’). In conjune- 
he 
tion with P: aechini, — excellent sketches of the 
tuberances as seen with the telescope, and carefully deeemaied 
the position of one green line er mee spectrum of the corona, 
“Prof. Nobile was able to observe the spectrum of the cusps 
waerins Se at least Jorty bright lines’). 
Legnazzi, rismg from a sick bed to fulfill his webs ob- 
served the contacts and the protuberances. The physical fea- 
