100 REV. J. FARQUH ARSON’S EXPERIMENTS ON THE INFLUENCE 
Sky between these quite clear of clouds, with many brilliant streamers 
of Aurora, forming evidently parts of two fringes coming towards the 
zenith from N. Bar. 30°, Therm. 39° ; nearly calm, 
tvj. p. m. — Many groups of very brilliant short streamers now passing into 
the zenith. Needle on steel point 2' W. Intensity, 1 st set of 50 oscill. 
in 225".‘25 ; 2nd in 225".25 ; 3rd in 225". 
(j^. — Narrow arch near the zenith, very faint, and small clouds appearing there. 
Arch in the S. descending to the horizon, and clouds descending with it. 
That in the N. now about 35° high, accompanied by many clouds. 
Needle on steel point shifted to 5' E. 
6 f . — Needle on steel point now 23' E. S. arch now extinct. N. one about 
45 ° high ; nebulous lights under it, and clouds rising with it. 
7 p. m. — Needle on steel point slowly returning westward. 
7 \. — Needle at zero. 
7^. — Needle 4' W. Aurora still forming an arch at N. ; but not advancing 
higher than 45°. 
7 |. — Needle still 4' W. Several arches of nebulous light in N. under 45°, with 
many clouds ; gentle gale a point or two S. of W. 
8 p. m. — Arch of nebulous light again formed at S. about 45° high. W. and 
middle parts of N. arches expiring as they reach 45° ; but their E. 
ends going now much further S. and passing the prime vertical to the 
mag. meridian ; not fully seen, however, for clouds, which are following 
the Aurora in all its flittings ; the rest of the heavens being quite clear. 
Needle on steel point now 7' 50" E. Intensity, 1 st in 225".25 ; 2 nd in 
225". 25. Therm. 38°. 
8 ^. — Needle on steel point 13' 40" E. 
8 ^. — Needle on steel point 8 ' 50" E. Intensity, 1 st in 225".25 ; 2 nd in 225".25. 
Nebulous light at N.W. and very brilliant groups of streamers at N.E. 
Aurora in the S. now extinct. 
83 . — Aurora fading ; needle on steel point 4' 20 " E. 
9 p. m. — Intensity, 1 st in 225".25; 2 nd in 22b". 2b. Needle on steel point 2 ' E. 
9|. — Three arches of Aurora of unusual brilliancy at inag. N. coming up ra- 
pidly with most splendid streamers. Fragments of the uppermost soon 
passed the zenith, and needle shifted slowly to 19' W. 
