SPECTROSCOPIC OBSERVATIONS OF THE SUN. 
581 
March 26th. — Chromosphere very hair-like, from 290° by 0° to 85°, except at 45°-55°. 
At 20° the hairs inclined in all directions; at 290° inclined towards each other in two 
masses, one on each side of 290°; at 65° sharp inclination to the prominence at 60°. 
The chromosphere was also hair-like at 110°-130°, 135°-150°, 215°-245°. 
March 27th. — The chromosphere about usual height, generally hairy. 
March 28th. — From 90° to 180° no chromosphere seen, on account of mist and fog ; 
from 180° by W. to 320° also misty, but observations made. Chromosphere hair-like 
in N.E. quadrant, and about 8" to 12" high. 
March 29th. — On a group of spots now in the centre of the disk the whole spectrum 
appeared full of narrow strips of absorption, as though the sun were mottled. The Ca 
lines enormously thickened on the left-hand spot, as seen in the spectroscope ; D formed 
nearly one line, and b also appeared joined into one. Near F the absorption was so 
great and general that nothing could be seen. 
April 1st. — Hairy chromosphere near 10°, 30°, 70°, 90°, and 210°, at which latter 
place the hairs were sharply inclined towards the prominence at 205°. 
April 2nd. — The group of prominences between 210° and 225° changing considerably. 
Chromosphere generally low (5" 1). 
April 19th. — Chromosphere hairy, and inclined to S. at 180°-190° and 270°-280°, to 
N. at 240°-250°, and straight up near 120°. 
April 19, 1873. 
April 21st. — Chromosphere very hairy, high, and hairs straight up at 35° to 85°. 
May 1st.— Chromosphere generally hairy and rather low. 
May 2, 1873. 
270 ° 280 ° 290 ° 300 ° 
May 2nd and 9th.— Chromosphere rather low ; on the 9th it was generally hairy, 
and the hairs straight up. 
May 20th. — Chromosphere very low and regular, about 6" high ; at 212^° a promi- 
nence of honeycomb structure (the note says, “ looks like a coarse sponge ”) ; the two 
northern quadrants not observed on account of mist. 
May 22nd. — Chromosphere low. 
