SecondReportonObservationsofthe Aurora Borealis, 1850-51 . 59 



to the smelting-house at the cost of the pui'chaser. They are 

 aU carried to Swansea or the neighbourhood, where almost aU 

 the smelting-works are placed. 



The ores coming from Ireland, Wales, and abroad are taken 

 to Swansea, and there crushed, sampled, and sold in the same 

 manner as described for Cornwall. There are now generally two 

 sales each month in Swansea ; and nothing can show better the 

 great increase of imports of copper ore into this country than a 

 reference to the sales at Swansea. These sales began about the 

 year 1815 ; and according to an interesting table lately published 

 by Mr. Polkinghorne, there was sold in that year £19,203 worth. 

 The average money value of these sales for five years, since 1819 

 to 1848, stands as under : — 



From 1819 to 1824 . . £33,713 

 From 1825 to 1830 . . 82,792 

 From 1831 to 1836 . . 163,785 

 From 1837 to 1842 . . 628,622 

 From 1843 to 1848 . . 750,403 

 The increase of the money value of the ores sold in Cornwall 

 is about one-third in the same period of time : — 



5 years ending 1824, being £742,508 

 5 yeai's ending 1848, being 999,529 

 The methods by which the ores are assayed will foi-m the sub- 

 ject of the next communication. 



VIII. Second Report on Observations of the Aurora Borealis, 

 1850—51, made by the Non-commissioned Officers of the Royal 

 Artillery, at tfie various Guard-rooms in Canada. By Captain 

 Lefkoy, R.A., F.R.S.* 



REGISTERS of Aui-ora have reached me from the following 

 quarters : — 



Latitude. 



Long. 



a Peel's River [Oct. 1850 to Apr. 1851 ... 



a Youcon January to May 1851 



a Fort Good Ho])e... Noveii)1)er 1850 



a Fort Confidence ... Oct. 1850 to Apr. 1851 ... 



a Fort Simpson ,Oct. 18-19 to May 1850 ... 



a Fort Simpson September 1850 



a Pelly and Lewis ...iDco. 1850 to Apr. 1851 < 



a Fort Cliipewyan ... Nov. 1850 to Apr. 1851... 



It Moose Factory June 1850 to Mar. 1851... 



b .Martin's Falls Sept. 1850 to Mar. 1851 .. 



b Nipegon 1842 to April 1850 



b .Matawagomingeu .. July 1850 to Mar. 1851 ... 

 * Michipicoton Nov. 1819 to July 1851... 



Mr. A. Peers 67 27 N. 



].Mr. Hardistv 66 



JMr. McBeath 1 66 10 



|Dr. Rae ' 66 54 



Ur. Rae 61 51 



Mr. Bernard Ross. | 

 Messrs. R. Campbell 



and Stewart \ 



.Mr. J. .Vuderson ... 



.Mr. Clouston 



Mr. Wilson 



Mr. J. Anderson. 

 .Mr. Colin Campbell, 

 Mr. Swanston 



■ 61 30 



58 43 

 51 10 

 51 52 



47 30? 

 17 56 



h m 



8 58 W. 



9 48 

 8 34 



7 55 

 6 



8 40 



25 



24? 



47 



28? 

 40 



* Communicated by the Author. For First Kcport, with Instructions 

 for ObscrviBjr, sec Phil. Mug., June 1H50. 



