228 Scientific Intelligence. 
i of a horizontal diameter. The rays were built up of in- 
numerable bright lines of different lengths, with more or less dark 
spaces between.’ Near the 
brightness of the central rin 
ut from this exquisite sight I was compelled to tear myself 
thickening downwards, like F. I was, however, astonished at 
e vividness of the C line, and of the continuous spectrum, for 
there was no prominence on the slit. I was above their habitat. 
The spectrum was undoubtedly the spectrum of glowing gas. 
I next went to the polariscope, for which instrument I had got 
Mr. Becker to make me a very time-saving contrivance—a double 
eye-piece to a small telescope, one containing a Savart and the 
other a biquartz. In the Savart I saw lines vertical over every 
i i and unoccupied sky 
2 
; rig C 
then F, then G, and last of all 1474! Further, the rings bie 
nearly all the same thickness certainly not more than 2’ high, 4 
but delighted to find that the open-slit method is quite compet 
to cat we promi Salar li 24 I felt as if I 
knew the thing before me well, had hundreds of times seen 18 
of the corona. Scarcely had I done so, however, when the ae 
was given at which it had been arranged that I was to do t 
