Professor Emerson on IlalVs Geolorjical Collections 555 



The common crystalline rocks of the Ar(;tic- regions, j>raniti(; and gneissose, 

 made up the bulk of the collection. With these were traps, red massive quartz- 

 ites, sandstones, gray and cream-colored dolomites and limestones, and a few 

 pieces of black cherty and dark fissile limestones, which furnished so many fossils 

 new in these regions, and coming from a horizon which had not before been known 

 to be represented so far north — that of the Utica slate — that it seemed desirabh; 

 to publish their occurrence; and as the west side of Baffin's Bay is so little open 

 to exploration, I have given a somewhat detailed account of all the specimens 

 which came into my hands. I was the more desirous to do this in order to add 

 something to the already very considerable scientific results of this unique 

 Expedition, as the single member thereof was accustomed to call it. By the 

 careful exploration of Frobisher Bay Hall filled out a considerable gap in the 

 geographical knowledge of the northern regions. His full investigations of 

 the relics of Frobisher cleared up many points in the history of his brave prede- 

 cessor, and recalled very vividly the famous gold excitement of the times 



FKOM BARROW STRAITS. 



8. Brown coal. Thin laminated, with joints at right angles to the laminae; color dull 

 black, powder deep reddish-brown ; burns with yellow flame, and the flame continues after it is 

 removed from the gas-jet; leaves a white ash, retaining the shape and nearly the size of the piece 

 employed. Nothing extracted by ether. 



Labeled, ''Specimen of coal from the center of Melville Island. Picked up 1853. — Bed- 

 ford PiM." 



This is manifestly a specimen rescued from the collections abandoned by Captain McClin- 

 tock's party in the memorable sledge journey across Melville Island.* 



9. A piece of fossiliferous Upper Silurian limestone, containing the following forms in such 

 poor preservation that the determination is in some cases rather uncertain : Airypa plioca, Salter, 

 sp. (young state) ; Loxonema Rossi, Houghton; Favosites gothlandica, Gold. ; Petrcea it«a (?), Lons.; 

 Cladopora seriata, Hall ; Halysites catenulata, L. 



Labeled, " Geological Specimens of the Parry Islands. Picked up on Beechy Island, east 

 of the group, 1856. — Bedford Pim." 



from smith's sound. 



10. A light gray granulite, quartz, orthoclase, and garnet, passing abruptly into a black 

 mica gneiss. 



Locality, Etah Bay, North Greenland. 



11. Protogine. Deep flesh-red orthoclase, a bright grass-green chloritic mineral (H = 1.5) 

 and biotite altered torubellan, the latter iu small quantity. It seems probable that the chloritic 

 mineral, which has exactly the properties of viridite, is a product of the decomposition of biotite, the 

 rubellau representing an intermediate stage. The rock was then originally a red biotite-granite, 

 one of the commonest rocks in the Arctic region. 



Locality, Etah Bay. 



12. Hornblende Schist. For the most part greenish-black hornblende, with a little bronze- 

 colored mica and quartz. 



Locality, Etah Bay. 



* Reminiscences of Arctic Ice-Travel, Journal Roy. Dublin Soc. 1857, pp. 235, 236. 



