176 
SIR NORMAN LOCKYER AND OTHERS ON THE 
In red 
Orange 
YelloAvish- 
green 
Greenish- 
l)lue 
Blue . 
I He 7065 or 6678. 
iH. (C). 
He (H 3 ). 
I Enhanced Fe 5316‘79 (1474 K). 
“Cool” Fe (E). 
Uig (2). 
J Enhanced Fe 5018. 
1 „ „ 4924. 
(F), 
The apjDearances described by Mr. Mouxtifield in the middle of totality were 
clearly due mainly to the fragmentary rings of prominences which were then visible, 
and do not represent the spectrum of the corona. The observations do not give any 
information as to the relation of the green coronal ring to the form of the corona, but 
information on this point is given by the photographs taken with the prismatic 
cameras; these show that the green ring resembles in form the inner corona, and has 
little or no relation to the longer streamers. The photographs taken with the small 
camera show the principal chromospheric and prominence lines very distinctly in two 
orders of spectra, representing on a small scale what was photographed with the 
larger instruments. No. 2 is especially interesting, as showing in one of the first 
order spectra a well-defined coronal ring, more refrangible than K, which is probably 
identical with the line recorded by Captain Hills at X 3801. Traces of other coronal 
rings are also seen. The first order spectrum of No. 3 shows an arc of the coronal 
ring X 4231 in a position corresponding to the north-western limb of the sun. 
The Folariscope. 
The instrument employed for observations of polarisation phenomena was that used 
by Sir Norman Lockyer in India in 1871. It consists of a telescope having an 
object glass 1‘4 inches in diameter and 14 inches focus, with a double eyepiece ; one 
contains a Savart and the other a biquartz. A simple rotation of the eye end sufficed 
to readily bring either of the eyepieces into position. The eyepiece of the bi(piartz, 
which was alone employed, gives a ma.gnification of about nine times, and a field ot 
about tNvo degrees diameter. Dr. Nolan states his results as follows : — 
“ With the junction of the crystals vertical the corona was seen of a uniform 
bright silvery-steel colour ; the large streamer in the S.W. was followed to its end ; it 
became less bright and distinct from the centre. At E.S.E. a prominence was noted, 
bright glowing red. The interspaces were seen of a dark leaden blue, and were 
uniform. 
“On rotating the crystals through 180^^, no change of colour was noted; the 
contrast between the colours of the streamers and rifts became inore marked, and an 
