THE 



CANADIAN NATURALIST 



AND 



Quarterly f outual of ^dtiut. 



PAL^iOZOIC GEOLOGY OF THE REGION ABOUT 

 THE WESTERN END OF LAKE ONTARIO. 



By Prof. J. W. Spencer, B.A.Sc, Ph.D., F.G.S., 

 Vice-President of King's College, Windsor, Nova Scotia. 



Preface. — In 187-i, I published, in this Journal, a short 

 paper on the "Geology of the Neighbourhood of Hamilton." 

 Subsequently (1877-80), I made an additional study of the 

 region, and found an immense nmount of geological information 

 obtainable. This paper on the Palaeozoic Geology was ready 

 for print in the autumn of 1879, but its publication was delayed 

 in order to complete the work; but as the completion seems 

 some distance off, I present this paper on the first portion of the 

 subject of the Geology about the Region of the Western End of 

 Lake Ontario. A very large amount of new material in Palaeon- 

 tology has been collected and is now ready for press. 



Although the principal facts of the Surface Geology have been 

 collected, yet the study is not yet completed, it being very large, 

 as more than local phenomena are involved. 



I. — INTRODUCTION. 



Skirting the Western End of Lake Ontario, in our Canadian 

 Province of the same name, there are excellent exposures of the 

 various portions of the Silurian formations (or Upper Silurian 

 of the New York Geologists) overlying, to a depth of several 

 hundred feet, the upper members of the Cambro-Silurian Age 

 (of the Hudson River epoch) about the city of Hamilton, 



Vol. X. I No. 3. 



