402 Scientific Intelligence. 
of the observing telescope. This slit limited the light entering the 
telescope to that of the refrangibility of the part of the spectrum 
near C. The slit of the spectroscope was then inclined sufficiently 
to admit the form of the prominence to be seen. The spectrum 
became then so impure that the prominence could not be distin- 
uished. A piece of deep ruby glass was then introduced so as to 
absorb light of all refrangibilities differing much from that of C. 
rominence was then distinctly seen. he sky is very 
When t 
clear the colored glass may be dispensed with.— Proceedings of the 
Royal Society, No. 109, 1869 Ww. G. 
. Researches on gaseous spectra in relation to the physical con- 
stitution of the Sun, Stars and Nebule—FRankitanpd and Lock- 
YER 
The Fraunhofer line of the solar spectrum named h by ve 
the tubes, we employ, with low battery and Leyden jar power; it 
may be looked upon therefore as an indication of relatively high 
temperature. As the line in question has been seen by one 0 us 
reversed in the spectrum of the chromosphere, it follows that the 
