244 Scientific Intelligence. 
gen lines the case was similar; the writer had 
one or other of them in the field continually, and they never quite 
disappeared, though at times very faint. 
course, the slitless spectroscopes, both ocular and photo- 
graphic, from which so much had been expected, failed to give 
any satisfactory results. In 1871, when the instruments were first 
used, the observers saw a series of colored images of the corona. 
Mr. Lockyer, for instance, saw four such images, one red, one 
green, one blue, and one violet. This year nothing of the kind 
Pp 
spectrum were equally unsuccessful, whether they employed the 
i pect rked f 
he most carefully prepared and sensitive photographic 
apparatus succeeded no better, except that Dr. Draper, Mr. Lock- 
er, and one or two others perhaps, did obtain by means of a slit- 
ess spectroscope, an impression of a faint continuous spectrum 11 
the ultra violet, without rings or markings of any kind. Evidently 
no lines exi to see or photograph on this occasion. : 
One or two observations were made of some interest in their 
relation to previous work. Professor Rockwood, of the Princeton 
Sey sa a double-barreled slitless spectroscope, observed at 
the nning of totality a bright red line in the chromosphere 
trum very near to B. This explains an observation of Mr. 
ogson, in 1868, who then insisted that he saw B reversed in the 
spectrum of a prominence, but as all the other observers had C 
instead of B, his record was generally regarded as a mistake. 
The line is probably one well known to solar s copists, at 
534 of Kirchhoff’s scale—a line exceedingly difficult to see in the 
m: 
