THE rocks are from the following localities. 

 1) Academy Land, boundary hills fronting towards the inland ice 

 Lat. 81°5'8" N., altitude abt. 500 m. Of the samples collected, several 

 consist of a light greyish-red sandstone, one is a very fine-grained, red- 

 dish-grey glauconitic sandstone and one a very fine-grained, highly 

 metamorphosed diabase. 



2) Zig-Zag Valley, near Danmarks Fjord, Lat. 81°15' N., altitude 

 285 m. A piece of fine-grained diabase. 



3) Zig-Zag Valley: Lat. 81°10' N., altitude 300 m. A piece of fine- 

 grained diabase, which according to sketch on label forms horizontal 

 strata with steep face at the top of the hills. 



4) Peary Land. A piece of fine-grained grey sandstone, which on 

 microscopic examination reveals a highly impure consistency, contai- 

 ning, besides quartz, some glauconite and a quantity of calcite, fre- 

 quently forming distinct rhombohedra. 



5) Solid rock behind Gneisnæs, altitude 312 m. Three pieces of 

 light-red sandstone. 



6) Gneisnæs, Heilprin Land, sea level. A piece of diabase. 



7) Little Gneisholm in the Peary Channel, altitude 28 m. Two 

 pieces of diabase. 



8) Høje Island in the Peary Channel, summit of the island. A piece 

 of coarse-grained diabase. 



9) Navy Cliff, altitude 690 m. Some pieces of diabase. 



10) Thulevarden, Game Land. Some pieces of diabase. 



11) Western end of Watershed River, (glacier stream. Top of Cape 

 Schmelck), altitude 365 m. A piece of metamorphosed diabase, colour 

 red. Under the microscope it reveals a structure like that of fine-grained, 

 porphyritic diabase, but is transformed throughout, both the phenocrysts 

 and the ground-mass, to quartz. 



12) North side of Bierings Land; two pieces of red sandstone (alti- 

 tude 920 m.) and a piece of diabase (altitude 940 m.) 



13) Bierings Land, opposite Bieringsvarde, altitude 630 m., (not at 

 the summit). Some pieces of diabase. 



It will be seen from the foregoing that the rocks throughout 

 this extended tract of country are of fairly uniform character, there 

 being only two different sorts, viz. sandstone and diabase, each of which 



