help concluding that these areas are totally geologically and lithically from that of Anticosti. In the latter area the formations are fertile and the thickness of the beds is more than one-quarter that of Quebec, in Nova Scotia. Further proof of this is to be had from the fact that about Cape Breton the Silurian rests directly on Ordovician strata, while about Port Daniel, Black Cape and Arroy there is an immense Silurian section beneath the Silurian all above the Ordovician. Again Anticosti lies to the north of the Appalachian folding while those mentioned above lie to the south east of the same mountain masses. The Ordovician of the St. Lawrence embayment is also widely different from that of the south. These differences must go with a series of folding connected with the Appa- lachians and my "Leas and barriers".