PRESIDENTIAL ADDRESS. 13 
streamer to the S.H. about 2 diameters long and three 
shorter ones. A very interesting article’ by Mrs. Hussey 
detailed the arrangements of the Expedition. 
As there would be considerable duration of the passage 
of the moon’s shadow across the earth, it has been supposed 
that it might be possible to detect the progress of some 
change in appearance in special parts of the corona, due to 
any process of disturbance that might be going on there, 
particularly ifthey might be situated above a large promin- 
ence in active eruption. Some slight indications of this 
kind have indeed been seen, but it was especially hoped 
that they might be established by means of photographs 
intended to be taken last August in Labrador, when com- 
pared with others taken with similar instruments in North 
Africa. The distance apart of the places of observation 
would have allowed a difference in time of fully two and a 
quarter hours. It was therefore thought that some clearly 
distinguishable change of appearance might occur in that 
length oftime. But the sun was wholly obscured by clouds 
in Labrador, as so often happens in connection with some 
specially important observation; the weather was at its 
worst where it was most needful that it should be fine, and 
the journey to a most inhospitable region was all in vain. 
The desired comparison must consequently be postponed 
until another suitable opportunity shall again occur,in which 
it may be possible to find accessible and suitable localities 
for the observation situated at a long distance apart on 
the earth’s surface. 
The following notes are extracted from W. J. Hussey’s 
Report on the Heclipse, August 30th 1905: Nineteen pho- 
tographs were obtained, having exposures varying from 
half a second for the inner corona, to sixty-four seconds 
for the fainter outlying streamers. With the intra-mer- 
' Independent Magazine, November, 1905. 
