294 REPORT— 1872. 



on this evening than on any other during the lunation. Webb's elbow and 

 c well seen. 



Summary.— Bun's altitude 36° 17'-5 to 34° ll'-5 ; tint of floor 0-62 to 

 0"60. Streaks generally visible — the sector, trident, and N .E. streaks. 



Interval 120 to 108 hours. 



1871, January 9. — Mr. Gledhill's remarks are the same as on Januaiy 8, 

 under interval 144 to 132 hours. See ante, p. 293. 



1869, December 21.— Mr. GledhiU recorded the floor as dark, =0-66. 

 Streaks all fairly seen, except ^ and jj. [I suppose by all Mr. Gledhill means 

 those which he has lately seen ; I have accordingly recorded b, a, e, i^, 6, and y.] 

 Mr. Gledhill mentioned none as bright except a and the sector, and they 

 were not bright and clear as usual ; a was perhaps the brightest. A bright 

 brush of light was seen near B. & M.'s h on the border, which appeared to 

 merge into a and 5. A line through spots Nos. 17 and 1, produced to the 

 N.W. border, cut the border just above or to the south of the brush, which is 

 Webb's elbow i. The brightest portion of the border is described as that to 

 the north of the streak a, the east end of the bright part of the border being 

 much the brightest. A diameter at right angles to the longitudinal diameter 

 of Plato passing through spot No 1 would cut the east and brightest ex- 

 tremity. Mr. Gledhill adds, " It seems a long narrow basin." 



Summary.— Bun's altitixAe 34° ll'-5 to 31° 42'-7; tint of floor 0-60 to 

 0-57. Streaks generally visible — middle and eastern arm of trident, sector, 

 y and a ; others less frequent. 



Interval 108 to 96 hours. 



1871, February 8. — Mr. Pratt described the streaks as ill-defined, except 

 I, which was very fairly seen and much brighter than any part of the trident. 



1870, July 16. — Mr. Gledhill recorded the floor as medium, =0-50; he 

 described aU the streaks as bright, except X and n, which were faint, a, /3, 

 y, d, e, ^ were all well seen : j? was seen near the border, and a had a 

 condensed central portion ; the south streaks (^, e) were brightest at their 

 southern ends. Mr. GledhiU does not mention the sector; but it is very 

 probable that he saw it, by his recording all as bright. 



1869, August 25. — Mr. GledhiU recorded the sector as "very faint" at 

 11 hours ; at 13.30 he recorded it as " fine." 



1870, September 13.— Mr. GledhiU recorded the floor as dark, =0-66. 

 The streaks were very bright and well seen. Mr. GledhUl measured the 

 positions of streaks l^, e, S, and a with the sector (see Eeport Brit. Assoc. 

 1871, p. 66). 



Summary.— Sun's altitude 31° 42'-7 to 28° 54'-3. Tint of floor 0-57 to 

 0-54. Streaks generaUy visible — the sector most frequent, three arms of 

 trident ; N.E. streaks much less frequent. 



Interval 96 to 84 hours. 



1869, December 22.— Mr. Gledhill recorded the floor as dark, =0-66. 

 Streaks aU faint ; o the brightest ; S, r], and y difficult ; e, ^, and sector 

 fairly seen, but faint. The brightest part of the inner wall was north of 

 streak a, as wcU as all the west border. Shadows were already imder the 

 east border. Time 12 hours. At 12.30 Mr. GledhUl recorded the part of 

 the inner north wall of Plato, from which the brush of light proceeded, as 

 mxich less bright than the adjacent portions east and west. 



1870, August 15. — Mr. Pratt recorded the floor as dark, =0-66, but 



