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>Vm* XIX. On ^Ae Mineralogy of Disko Island. By Sir Charles 



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■'^, GiESECKE, F. R. S. Edin. M.R. I. A, Professor of Mine* 

 i ^ „ ^.ralogy to the Royal Dublin Society, and Member of the 

 Iiii '*^ '^•' Royal Societies of Copenhagen, Upsal, &c. &c. ^ 



^ ^< V ^ ;-«^ 



^. (Read ApriM. ISU.) "**-•# 



I .!^ ' JJiSKO Island, (see Plate XV.), is situated in front of a bay f" '^'^^^^ 



in the continent of Greenland, within Davis' Strait, known by ''^iijfi 



t'f: ^-^.the name of jDisAo Bay, which is sometimes called, particularly. ^ -«- «« -2^ ^ 



^jf ^S' -'in the old Dutch charts, Sydost Bay. This name is derived from *k^*^. 1^' ^k *» 



an immense curvature, screened by innumerable islands, made iiSS- ' »^ ll^'^i ^ 



v5,thecontinentby the sea. Disko Island is situated in 69" 14' of N. ^ '' "^'^ 4t ''^ 



latitude. It is distant from the continent towards the south 12 .■^^^'■^^J'^ '* " 



German miles ; on the west and north it is surrounded by the ^ j3m& 4^^ i 

 sea of Davis' Strait ; and on the east, it is separated by a nar- ^ff^' »«SlKf« 

 row sound, distinguished by the name of Waygat by the Dutch, ' **i^M* ^^jj^'^ 

 and by the Greenlanders Ikareseksoak. It stretches north- sR-jtSfc^lilfff^-^^l 

 ward from 69° 14' to 70° 24'; and its greatest breadth, which "t .^-'li^^ *- '^ 

 is from Fortune Bay on the west, to Flakkerhuk, so — "--' ^'^^ • "•* 



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named b^r ^*^^.*^^9 ,*" 



the Dutch, on the east, is 10 German miles. ^ ^, '4% a 



The whole of Disko Island belongs to the floetz-trap forma- *<^4(II^ ^^4$?'^ -rjj 



^^' tion, which extends over part of the continent, beyond thA '■*^%*:^^--»'! ^■' '\ 



Waygat, and shews itself on the other side at 69° 20' of N. ^'"^A't^/^tlc 



Lat. continuing towards and occupying the peninsula of Noori- ',»•*» "* * *^^ 



*# 



soak, which separates Disko Bay from the Bay of St James; . r 



called by the Dutch Stikkende Jakob's Bay. On the east end . ' . / 3* 

 » "v. voL.xx. p. II. l1 91^^ ifija; ^.-ti 



