H OLAF HOLTEDAHL. M.-N. KI. 
mely probable, then it must be assumed that the geological conditions 
there are different from what has been hitherto supposed. In the geolo- 
gical maps of these regions, after the report of Sir Joan Rossi, we have 
granite marked here, whilst limestone is indicated on the coast some- 
what farther both north and south. 
As is known, fossils from both the west coast of King William Land 
and the west coast of Boothia Felix near the Magnetic Pole, were collected 
during Mc Clintock's expedition in the fifties. As indicated by previous 
investigators, it appears from what one may conclude from the accounts of 
the geological results which were given by Prof. S. Haucuton in the 
»Appendix« to Mc Clintock's »Narrative of the Discovery of the Fate of 
Sir JoHN FRANKLIN« (London 1860)?, that a confusion of fossils from various 
stratigraphic horizons has taken place. Certain Ordovician forms however 
are known from several localities, e. g. from yellow dolomite on the west 
coast of King William Land. 
The fossils collected were the following: 
Receptaculites oweni Hair. 
Plate I, Eie. 7 2, PL IV, Eig 
1861.  Receptaculites owent HarL. Report Geol. Survey Wisconsin, p. 13. 
1882. Receptaculites oweni WHITFIELD. Geol. of Wisconsin. Vol. IV, p. 239. PI. ro, fig. 7, 
1895.  Receptaculites oweni WINCHELL and SCHUCHERT. Geol. of Minnesota. Vol. III, part I. 
p. 57, Pl. F, fig. 1— 4. 
1900,  Aeceptaculiees oweni SCHUCHERT. On the lower silurian (Trenton) fauna of Baffin Land. 
Proceedings U. S. Nat. Mus. Vol. XXII, p. 152. 
Of this characteristic form there are numerous fragments, and also a 
few more complete pieces, although the latter do not exhibit either the 
outer form or the character of the surface quite completely. 
The size of the disc, which is almost flat, varies greatly, the largest 
specimen which we have been able to measure being 19 cm. in diameter 
(shown in pl. I, fig. 2. In the same specimen the greatest thickness of the 
disc — near the periphery — amounted to 13 mm. although this did not 
fully represent the original dimensions, as the surface was somewhat worn. 
In the central funnel-shaped depression of another specimen, (as shown 
1 See Dawson: Geologic Map of the Northern Part of Dominion of Canada. Ann. Rep. 
Geol. and Nat. Hist. Survey of Canada 1887. 
Low: Geol. Map of the North-eastern Part of the Dom. of Canada, 1905. In Rep. on 
the Exp. on Board the „Neptune“, Ottawa 1906. 
* A more detailed description of certain of the fossils collected was given in the „Jour- 
nal of the Royal Dublin Society", Vol. I, 1857 and Vol III, 1860. I have had an 
opportunity of seeing Vol. III only. 
