XIII. — Description of an Aurora Borealis. By 

 William Sturgeon, Esq. 



(Read November 2nd, 1847.) 



On Sunday night last, the 24th October, we had 

 another grand display of the Aurora Borealis, 

 attended with peculiarities of a remarkable cha- 

 racter, and such as are but seldom witnessed. 

 The Aurora was first seen as early as a quarter 

 before six in the evening ; at which time, and 

 during an hour afterwards, streamers of consider- 

 able magnitude and of different colours were seen 

 to shoot upwards, from a low altitude in the heavens 

 to the zenith of the observers. The grandest 

 display of these streamers occurred about half-past 

 six o'clock. They were of various hues — some 

 crimson, some pink, others yellow, green, and 

 violet. The largest of the whole appeared like 

 an immense pillar of crimson light, situated about 

 the north-west. The others were generally as- 



