348 
CAPTAIN L. DARWIN, DR. A. SCHUSTER, AND HR. E. W. MAUNDER 
Plate 1. 
Plate 2. 
Plate 3. 
Plate 4. 
Plate 5. 
Plate 6. 
Plate 7. 
Plate 1. 
Plate 2. 
Plate 4, 
Plate 5. 
Plate G. 
Mr. Maunder’s Negatives. 
Exposure 0‘2 sec. Corona well defined, but not extending further than 7' 
from limb. Tliree prominences on N.E. limb, and low^er part of great pro¬ 
minence on N.W. 
Exposure 2 secs. Corona well defined, but not extending further than 11' 
from limb. Same prominences visible as on Plate 1. 
Exposure 10 secs. Corona can be traced on N.W. to nearly a Lunar 
diameter from limb, but is extremely ill defined, showing scarcely any detail. 
Negative so dense that prominences can hardly be made out. 
Exposure 40 secs. Corona of great extent, but ill defined. There has been 
much shake, and two separate images, about 13' apart, are superposed upon 
the plate. 
Exposure 7 secs. Corona can be traced on N.W. to about 27', but detail very 
imperfect and indefinite. *^ Not quite so dense a negative as Plate 3. 
Exposure 4 secs. Greatest height of corona 22'. Dense negative, but detail 
very ill defined. 
Exposure 0'2 sec. Scarcely a trace of corona. Plate fogged, but prominences 
on N.W. and W. limb perfectly defined and better seen than on any of the 
plates. 
Professor Schuster’s Negatives. 
Exposure 15 secs. ('?) Lower portions of corona only are just visible. Twm 
prominences on N.E. limb, and lower part of great prominence on N.W. 
■" Exposure 15 secs. (?) Corona slightly more shown than in Plate 1. One 
prominence visible on N.E. limb, and lower part of great prominence on N.W. 
Exposure 20 secs. (?) Corona of greater extent than in any of the plates of 
this series, reaching on the N.W. to a height of nearly 26'. Details of coronal 
structure ver}- well shown. Negative dense near limb ; prominences not very 
distinct. 
Exposure 15 secs. (?) Coronal detail well shown, but extension somewhat 
abruptly cut oft' at a height of about ^ of a Lunar diameter. Dense near 
limb ; prominences not well seen. 
Exposure 5 secs. (?) Somewhat thin negative ; details of corona in N. and S. 
polar regions very clearly defined, but a superposed image (a few minutes of 
arc from the principal image), with a trace of the re-appearing crescent, has 
blotted out the corona on the W. side. 
* The corona was behind a film of clouds while these })hotographs were taken. 
