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XLVIIL— ON THE LIASSIC FOSSILS OF M'CLINTOCK'S 

 EXPEDITION. By EEV. DR. HAUGHTON, F. E. S. 



[Read, January 19, 1887.] 



The following correspondence throws further light on the fossils 

 found by Sir Leopold M'Clintock at Wilkie Point, Prince Patrick's 

 Land [lat. 76° 20' N.; long. 117° 20' W.], and described by me in 

 this Journal (vol. i., pi. ix.) 



The letters sufficiently explain themselves, bearing in mind 

 that I had originally stated my opinion that the fossils were of 

 Jurassic age (probably Liassic.) — S. H. 



N.B . — These fossils were presented by Sir Leopold M'Clintock 

 to the Museum of the Eoyal Dublin Society, and can now be seen 

 in the Science and Art Museum, Dublin. 



" Geological and Natural History Survey, 



" Museum and Office, Sussex-street, Ottawa, 



"5th November, 1886. 



" Dear Sir — In endeavouring to work up a small general Geologi- 

 cal Map of the Northern part of the American Continent, which may be 

 published in connection with our reports, I have had frequent occasion to 

 refer to your Appendix to M'Clintock's Yoyage, which gives, I think, 

 practically all the facts available for the northern portion of the Arctic 

 Archipelago. 



" I have not access to the earlier Papers in the Journal of the Royal 

 Dublin Society, but presume the Appendix (edition of 1860) may contain 

 a sufficient resume of the whole. 



" The point on which I take the liberty of addressing you, particularly 

 at the present moment, is the character of the fossils described as Liassic, 

 and figured in the Journal of the Royal Dublin Society, vol. i., pi. ix. 



"Is it possible, in your opinion, that these fossils may indicate a 

 horizon the same with that of the so-called 'Alpine Trias' of the western 

 part of North America? From the occurrence of a Monotis, western 

 analogies would rather tend to this view of the case, which, however, the 

 fossils themselves may be sufficient to disprove. If not troubling you 



