XII 



in an open boat all the way from Alnk on the southern part of 

 the east-coast round Cape Farewell to the latitude of 73° 35' 

 «n the west-coast. On this tract of coast, of a length of 2000 

 kms., scarcely any important fjord or sound is found which 

 Giesecke has not visited. The results of his voyage are found, 

 partly in his diary 1 ), partly in the large collections of minerals 

 and rocks which he sent home. He arranged the collected 

 material in a series of collections, each of which contained 

 specimens from all the important mineral localities; thus he was 

 able to provide each of the four mineralogicai museums, then 

 found in Copenhagen, with a representative collection of Green- 

 land-material, and also to provide several museums abroad (in 

 Dublin, Göttinnen, Vienna) with similar collections. By this 

 means Giesecke's collections got into the hands of prominent 

 mineralogists' 2 ), who examined and described the new and inter- 

 esting mineral species which they contained. 



In 1860 the mineralogicai museums of Copenhagen were 

 united to the collection of the university, and thus the greater 

 part of Giesecke's minerals were also united; some years later 

 they were inspected and arranged systematically by J. F. John- 

 strop, who used them by the revision and edition of the above 

 mentioned diary by Giesecke. The renewed examination made 

 for the preparation of the present hand-book, showed that many 

 valuable informations were still to be obtained from these col- 

 lections almost a hundred years old. Even a cursory inspection 

 of " Miner -alogia groenlandica" will show the exceedingly great 

 share that Giesecke has in the mineralogical exploration of Green- 

 land ; here, therefore, it shall only be pointed out that we are 

 indebted to him for the first knowledge of two of the most 



К L. Giesecke: "Bericht einer mineralogischen Reise in Grönland". 

 Edlted by F Johnstrup. Copenhagen 1878. 



Alreadj before this lime the collections from 180« and 1807 had got 

 Into the hands of the Scotch mineralogists, the ship that carried them 



h being captured by English cruisers consequent to the war that 



bad broken <>ni just then. 



