appears to subsist between it and the Formation of Clouds, 35 



streaks from W.N.W. to E.S.E. 5 h 50 m . Auroral luminosity in 

 N.W., cirrostrati from W. by N. to E. by S. shooting fitfully 

 across to eastward, and much resembling auroral streamers but 

 for their murky hue. 7 h 59 m . Aurora over the whole sky except 

 a portion in S.E., the apex of the S. limb being about 35° above 

 the S.S.E. point. Cirrostrati from W. to E. over the whole sky, 

 except a few clear spaces near the S. margin of the aurora. ' 

 Streamers shooting up to the corona. These proceeded almost 

 exclusively from the W. point, from which a stiff breeze blew, 

 and they seemed to move in accordance with the gusts, their evolu- 

 tions being often very rapid. [N.B. This auroral display was 

 the finest seen here for a long period, and presented many inter- 

 esting features. The cirrostrati became less distinctly marked 

 as the auroral light diminished in intensity.] 



" 1845. Jan. 5, 9 h a.m. Cirrostrati extending across the sky 

 from N.W. to S.E., motion imperceptible. High wind with 

 nimbi driving rapidly from W.S.W. 9 h p.m. Luminous appear- 

 ance above the clouds, which were nimbi and cirrostrati ; wind 

 still high. 



" Jan. 8, 10 h p.m. Luminous cirrostratus haze over the sky, 

 with some dark bands extending N.N.E. to S.S.W. The density 

 of the dark and luminous portions seemed to be the same, the bril- 

 liancy of the stars being nearly equally affected by both. 



"Jan. 9. A remarkable display of the aurora connected with 

 cirrostrati. The phenomena deviated in some respects from the 

 regular order of auroral displays, no tendency to the formation 

 of a corona having been exhibited, and the centre of the aurora 

 having at one time been decidedly to W. of the magnetic 

 meridian. 



"April 23, 10 h p.m. Cirrous bands and fibres ranging N.N.E. 

 to S.S.W., and shifting their form and position, exactly after the 

 manner of auroral streamers, which they much resembled. They 

 were, however, distinguishable from these by a whiter and denser 

 appearance, by being at an inferior elevation, and by showing no 

 tendency to coronal convergence. They moved slowly from E. 



"Aug. 29, 8 h 30 m p.m. Streamers appeared in N.N.E. a few 

 degrees above the horizon, and in a short time formed a flat- 

 topped arch. In N.W. and W.N.W. were a number of scat- 

 tered cirri. At 9 h p.m. a faint streak shot up fromE.N.E., and 

 in about a minute a splendid arch of intense white was com- 

 pletely formed, spanning the sky from E.N.E. to W.S.W., and 

 crossing the magnetic meridian at an altitude of about 78° above 

 the S.S.E. point. Its breadth was about 1°, regular and well- 

 defined. In the course of five minutes it had moved considerably 

 to S. ; it then remained stationary for ten minutes, when it dis- 

 appeared. Just before its disappearance its apex was 66° above 



D2 



