124 G. F. Barker—Spectroscopic Observation of the Solar Eclipse. 
whole length and remarked that the results in my spectroscope 
agreed entirely with those in yours, and that the spectrum 
appeared in both absolutely continuous, y mind being thus 
relieved, I took my place again at the spectroscope, and this 
time, placing the slit tangential to. the moon’s li moved 
the observing telescope from end to end of the spectrum, open- 
ing and closing the slit at intervals; but the spectrum appeared 
as continuous as before. Again the image was adjusted so that 
popin of the corona. On examining again the spectrum, no 
right lines appeared, except once for an instant, when the slit 
passed chromospheric prominence already 
incandescent gas or vapor, which shining by its own light 
would of course give a bright-line spectrum. The presence of 
