ON' THE PERIODICITY OF THE AURORA BOREALIS. 



283 



Whitehaven, Engl. Glaisher. 

 Christiania. 1 Fearnley. 

 Fort Simpson, Fort George. Lefroy. 

 En route for Swan River. Lefroy. 

 Nottingham, Engl. Glaisher. 

 Fort Simpson, Peel's River. Lefroy. 

 En route for Red River, Fort George. Le. 

 North Shields, Engl. Glaisher. 

 Fort George, Quebec. Lefroy. 

 North Shields, Engl. Glaisher. [Lefroy. 

 Fort Simpson, Peel's River, Fort George. 

 Fort Simpson, Peel's River. Lefroy. 

 Fort George. Lefroy. 

 Fort Simpson, Peel's River. Lefroy. 

 Fort George, Quebec. Lefroy. 

 Fort Simpson, Peel's River. Lefroy. 

 Fort George. Lefroy. 

 Fort Siinjison, Fort George. Lefroy. 

 Fort George. Lefroy. Nottingham. Glaisher. 

 Fort George. Lefroy. 

 Fort Simpson, Fort George. Lefroy. 

 Fort Simpson. Lefroy. Guernsey. Lefroy. 

 Fort Sirnpson, Quebec. Lefroy. 

 Nottingham, Hawarden. Glaisher. 

 Slonylwrst, Whitehaven. Glaisher. 

 Christiania. Fearnley. 

 Fort George. Lefroy. 

 Stone, Hartwell Factory. Glaisher. 

 Christiania. Fearnley. 

 FortSimpson,En routeforSt.Paul. Lefroy. 

 Fort George. Lefroy. Toronto. Kingston. 

 Fort Simpson, En route forSt. Paul. Lef. 

 Fort George. Lefroy. Toronto. Kingston. 

 Fort Simpson, Fort George. Lefroy. 

 Fort Simpson, Fort George. Lefroy. 



Quebec, Sturgeon River. Lefroy. 



Fort George. Lefroy. Toronto. Kingston. 



Fort Simpson. Lefroy. 



Fort Simpson, En route for St. Paul. Lef. 



Fort George, Quebec. Lefroy. Toronto. K. 



At Sea, Ship New World, Lt. 51° N. Lg. 



Midhurst, Clifton. Glaisher. [181°^. 



Haioarden, Durham. Glaisher. 



Fort Simpson, En. route for St. Paul. Lef. 



Fort George, Quebec, Sturgeon River. Lef. 



Clifton, Stonyhurst, Durham. Glaisher. 



1 Meteorologische Beobachtungen aufgezeicb.net auf Chris- 

 tiania Observatorium. 



Fort Simpson, Fort George. Lefroy. 



Penetanguishene. Lefroy. 



SturgeonRiver. Lefroy. Toronto. Kingston. 



At Sea, Ship Roscius, Lt. 42° N. Lg. 56° W. 



Smithsonian Records. 



Fort Simpson, Fort George, Quebec. Lefroy. 



Sturgeon River. Lefroy. Dunino. Glaish. 



Fort Simpson, Sturgeon River. Lefroy. 



Penetanguishene. Lefroy. Dunino. Glaish. 



Fort Simpson. Lefroy. 



Quebec, Sturgeon River. Lefroy. 



Kingston. Lefroy. Toronto. Kingston. 



Fort Simpson,Quebec,SturgeonRiver. Lef. 



Bicester, Stone, Hartwell Rectory. Glaisher. 



Fort Simpson, Fort George. Lefroy. 



Fort Simpson, FortGeorge,Quebec. Lefroy. 



Fort Simpsoii. Lefroy. Holkham,Engl. Gl. 



Fort Simpson. Lefroy. 



Fort Simpson. Lefroy. 



Fort Simpson. Lefroy. 



Fort Simpson. Lefroy. 



Fort Simpson. Lefroy. Toronto. Kingston. 



Stone, Engl. Glaisher. 



Fort Simpson. Lefroy. Toronto. Kingston. 



Penetanguishene. Lefroy. 



Fort Simpson, Sturgeon River. Lefroy. 



Fort Simpson, Fort George. Lefroy. 



SturgeonRiver. Lefroy. Toronto. Kingston. 



Penetanguisliene. Lefroy. 



Fort Simpson. Lefroy. 



Fort Simpson, Fort George. Lefroy. 



Penetanguishene. Lefroy. 



Fort Simpson, Fort George. Lefroy. 



SturgeonRiver. Lefroy. Toronto. Kingston. 



AlSea.ShipNeiv World,LtA\°N. LgM° W. 



At Sea,ShipYorktown,Lt. 50°N. Lg.28°W. 



Smithsonian Records. 



Nottingham, Hawarden. Glaisher. 



Greenwich, Stone, Hartwell House. Glaish. 



Hartwell Rectory, Gardington, Grantham. 



Fort Simpson, Sturgeon River. Lefroy. 



Penetanguishenc.Ijefroy.Toronto.K.mgston. 



Haivarden, Durham, Engl. Glaisher. 



Fort George. Lefroy. Toronto. Kingston. 



AtSea.ShipYorktown, Lt. ±6°N. Lg.32°W. 



At Sea, Ship Mazatlan, Lt. 40°iV. Z#.71£. 



Smithsonian Records. 



Stone, Hartwell Rectory, Hawarden. GL 



