Scientific Books. — Aurora Borealis. 395 



deer have been found in the diluvial gravel that forms the low line of 

 cliffs to the west of Brighton, at Copperas Gap, near Southwick. 

 These, like all the other bones that have been discovered in this bed, 

 were broken, and promiscuously intermingled with the soil. Two teeth 

 of a species of deer, and portions of several humeri, were identified. 

 Part of the tusk of an elephant was also found with them, and pebbles 

 of granite, in a state of decomposition. Teeth of the Asiatic elephant 

 have been met with in the loam-pits at Hooe.— The Rev. H. Hoper of 

 Pontslade has these interesting remains in his possession. 



SCIENTIFIC BOOKS. 

 Just Published. 

 The Enigmatical Entertainer and Mathematical Associate for 1828. 



Preparingfor Picblication. 

 A Third Edition of Mr. Bakewell's Introduction to Geology, greatly 

 enlarged, will be published early in January next. This work will 

 contain all the recent discoveries in geology, and numerous geological 

 observations made by the author in various parts of Great Britain and 

 the Continent of Europe since the publication of the last edition. 



AURORA BOREALIS. 



Gosport Observatory, Sept. 26, 1827. 

 At nine o'clock last evening a bright yellow light appeared in 

 the N.W. quarter, behind a low stationary cirrostratus cloud, and 

 gradually extended from N. to W.N.W.: it continued to increase 

 in altitude and width, and at ten had a brighter appearance than 

 the strongest crepuscule that appears in this latitude in a clear sky 

 about the time of the summer solstice ; but neither lucid columns 

 of light nor coruscations yet presented themselves. At half-past 

 ten the aurora had formed itself into a tolerably well-defined arc 

 of intense light, whose base extended from N. to W. ; and at a quar- 

 ter before eleven, perpendicular lucid columns and vivid corus- 

 cations of this subtile fluid appeared in quick succession. So bril- 

 liant was the aurora at eleven, that the streamers reached 8 or 9 

 degrees higher than Polaris, and their apparent base was nearly 

 horizontal with the star Beta in Ursa Major. At this time the corus- 

 cations, which appeared to spring up from a much greater northerly 

 distance than the columns were, reached to the constellation Cassi- 

 opeia, which was nearly in the zenith. Soon after eleven, a column 

 of light six degrees in width gradually rose from the position of the 

 before-mentioned star, and when it had reached an altitude of 70 

 degrees, it changed from a light yellow to a blood-red colour, which 

 with the more elevated and vivid flashes that frequently reached 

 twenty degrees South of the zenith, gave the aurora an awfully 

 grand appearance, which it would be difficult to paint or express. 

 This wide column remained perfect upwards of an hour, alternately 

 waving and increasing in brilliancy, and ultimately passed through 

 the gradation of colours which is sometimes seen in the clouds near 

 the horizon at sunset, as lake, purple, light crimson, &c. : it became 

 3 E 2 apparently 



