548 HAUGHTOK, GEOLOGY OF PARRY ISLANDS, ETC. 



3. Village Point. Lat. 76° 50' N., long. 97° W. 



Coal of the usual description found in the Parry Islands 

 was found at this point, which lies in the line joining 

 Buckingham Island with Liddon Gulf. 



4. Dep6t Point, Grinnell Land, Lat. 77° 5' N. 

 Carboniferous Limestone. 



Lithostrotion basaltiforme, Phil. Belcher's Voyage, t. 36, 



f. 4; Journ. R. D. S., i. t. 11, f. 6. 

 Zaphrentis ovibos, Salter. Belcher's Voy. t. 36, f. 5. 



5. Depdt Bay, Bellot^s Strait. Lat. 72° N., long. 94° W. 



Silurian Dolomite, white, saccharoid, with large rhombo- 



hedral crystals of calcspar. 

 Maclurea arctica, Hgt. J. R. D. S., iii. t. 3, f. 1, 2. 

 Cyathophyllum helianthoides, Goldfuss. 



6. Cape Parrand, East side of Boothia, Lat. 71° 38' N., 



long. 95° 35' W. 



Silurian limestone ; grey, earthy. 



Atrypa phoca, Salter. Sutherland's Journal, t. 5, f. 3. 



Loxonema Rossi, Hgt. J. R. D. S., i. t. 5, f. 6, 8, 9, 10, 11. 



Favosites Gotlandica, Goldf. {F. Niagarcnsis, Hall.) 



Atrypa, ribbed sp. 



Cyrtoceras, sp. 



7. West shore of Boothia. Lat. 70° to 71° N. Containing 



the Magnetic Pole. 



Earthy limestone, and cream-coloured chalky dolomite. 



Atrypa phoca, Salter. Sutherland's Journ. t. 5, f. 1-3 ; 

 J. R. D. S., i. t. 5, f. 3, 4, 7. 



Loxonema Rossi, Hgt. 



L. Salteri. Sutherland's Journ. i. 6, f. 1 8. 



Favistella Franklini, Salter. J. R. D. S., i. t. 11, f . 1 ; 

 Sutherland's Journ., t. 6, f. 3. 

 One of the most remarkable facts brought to light by M'Clin- 

 tock's geological exploration of the Arctic regions during the 

 Voyage of the " Fox," is the occurrence of dolomite or magnesian 

 limestone, covering large areas in almost horizontal beds. It 

 abounds in fossils ; and is an almost pure dolomite, or union of 

 carbonates of lime and magnesia in equal atomic proportions. To 

 my mind this fact is of as much, if not more, importance in 

 identifying the Silurian strata of Boothia Felix, King-William's 

 Land and Prince-of-Wales Land, as any identification of fossils 

 could possibly be. Considered in reference to Dr. Bigsby's papers 

 on the Silurian rocks of New York, recently published by the Geo- 

 logical Society of London,* it is a fact of great interest. f The 

 following is the composition of the Dolomite I'rom the western 

 shore of Boothia Felix ; those of the other dolomites are given in 

 their proper places. 



* Quart. Journ. Geol. Soc. London, vol. xiv. pp. 335, 427 ; xv. p. 251 ; 

 1858-9. 



f Dr. H. Rink has noted the existence of a Dolomite low down on the west 

 coast of Greenland, above^ p. 496. — Editor. 



