1918.] The N.Z. Journal of Science and Technology. 355 
we found its spectrum to be continuous. The red struck me as appear¬ 
ing weak, the blue and violet sections strong and much extended. The 
spectrum as seen at intervals between clouds was as follows : At C a dark 
line and prominent, but its position uncertain owing to shortness of 
the red. At D a broad bright band, but not very strong; several 
dark lines weak in the green. About 5155 a faint dark line, widened 
somewhat, and several fine dark lines between b and / in the green-blue 
fairly prominent. 
June 13.—Magnitude 1 (or one or two points higher). Night cloudy, 
but partially cleared at 10 h. 30 m. View got with spectroscope for a few 
minutes only. The spectrum now completely changed. At C is a broad 
and brilliant band that is vivid as the C when that line is centred and 
focussed on the chromosphere. D is dark edged with bright band ; bright 
band at b, while a number of dark lines in the green and nearer blue 
appeared to be interspersed with lighter bands. 
June 15.—Magnitude = 1*4 +. When the star is brought to a focus 
it appears to have a white centre with a vivid red border. Many here have 
seen this. Spectrum : C very bright ; D not so prominent as before. 
A number of fine lines (dark) in the green and nearer blue. Two fine 
bands about E6, and a very broad band at F, also at Gb 
June 16.—Magnitude as 15th, or very nearly so. The spectrum now 
reveals very clearly the doubling of the lines, bright and dark in contact 
in nearly all lines in the yellow, green, and nearer blue, the brighter side 
towards the red end of spectrum in all cases. C is very vivid. There are 
two wide light bands at E6, one at F, and one at G. 
June 18.—Magnitude now — 1-6, or slightly lower. Spectrum as 16th. 
Night hazy. 
June 20.—Magnitude = 2 or 2-2. Star appears very red to naked 
eye, and in the telescope at focus it shows very distinctly the white 
centre and vivid red border. The main lines of spectrum as 15th and 
16th, but, with the lower magnitude arid Moon nearing its full, detail is 
not at all easy. 
June 29.—Magnitude — 3 +. Spectrum faint, but all the wide bright 
bands as seen on 15th and 16th very prominent. The C line does not 
appear in the least dimmed. 
July 3.—Magnitude = 2-5 or 2-6. The Nova appears to have brightened 
up since the last observation. The great red band at C appears as brilliant 
as ever. There is a bright band at F. Many dark lines can be glimpsed, 
with bright in contact, between C and b. The border of the star at focus 
appears of a magenta tinge. 
July 9.—Magnitude = 3-5 +. The spectrum appears very faint to-night. 
The C line still very vivid. The greater bands are all visible, particularly 
in the green and blue. 
July 12.—Magnitude 3-2 or 3. Spectrum : The C brilliant. F is still 
very fine, though much diffused. The two bright bands are broad and 
fairly bright. 
July 24.—Magnitude = 4 +, Seen for few moments only; slightly 
brighter than 8 Aquilae. Too cloudy to observe spectrum. 
July 25.—Magnitude = 4 +. The red border to star at focus is very 
striking. The spectrum is still fairly bright in the 9J in., but colours faint. 
C is still a brilliant broad line on the fainter band. The lines at E and B 
are brighter than they have been before by comparison with the general 
