THE HISTOEY OF A DISCOVEEY. 53 



T. Sterry Hunt, and myself, in 1865, additional specimens of 

 Eozoon have been obtained during the explorations of the 

 Geological Survey of Canada. These, as in the case of the 

 specimens first discovered, have been submitted to the ex- 

 amination of Dr. Dawson; and it will be observed, from 

 his remarks contained in the paper which is to follow, that 

 one of them has afforded further, and what appears to him 

 conclusive, evidence of their organic character. The speci- 

 mens and remarks have been submitted to Dr. Carpenter, 

 who coincides with Dr. Dawson; and the object of what 

 I have to say in connection with these new specimens is 

 merely to point out the localities in which they have been 

 procured. 



" The most important of these specimens was met with last 

 summer by Mr. G. H. Vennor, one of the assistants on the 

 Canadian Geological Survey, in the township of Tudor and 

 county of Hastings, Ontario, about forty-five miles inland 

 from the north shore of Lake Ontario, west of Kingston. It 

 occurred on the surface of a layer, three inches thick, of dark 

 grey micaceous limestone or calc-schist, near the middle of a 

 great zone of similar rock, which is interstratified with beds of 

 yellowish-brown sandstone, gray close grained silicious lime- 

 stone, white coarsely granular limestone, and bands of dark 

 bluish compact limestone and black pyritif erous slates, to the 

 whole of which Mr. Yennor gives a thickness of 1000 feet. 

 Beneath this zone are gray and pink dolomites, bluish and 

 grayish mica slates, with conglomerates, diorites, and beds of 

 magnetite, a red orthoclase gneiss lying at the base. The 

 whole series, according to Mr. Vennor's section, which is ap- 

 pended, has a thickness of more than 12,000 feet ; but the 

 possible occurrence of more numerous folds than have hitherto 

 been detected, may hereafter render necessary a considerable 

 reduction. 



" These measures appear to be arranged in the form of a 

 trough, to the eastward of which, and probably beneath them, 

 there are rocks resembling those of Grenville, from which the 

 former differ considerably in lithological character ; it is there- 

 fore supposed that the Hastings series may be somewhat 



