Canada is the child of the sea. Her infancy was cradled by her waterways; and the life-blood of her youth was drawn from oceans, lakes, and rivers. No other land of equal area has ever been so intimately bound up with the changing fortunes of all its different waters, coast and inland, salt and fresh. The St Lawrence basin by itself is a thing to marvel at, for its mere stupendous size alone. Its mouth and estuary are both so vast that their salt waters far exceed those of all other river systems put together. Its tide runs farther in from the Atlantic than any other tide from this or any other ocean. And its 'Great Lakes' are appropriately known by their proud name because they contain more fresh water than all the world beside. Size for size, this one river system is so pre-eminently first in the sum of these three attributes that there is no competing second to be found elsewhere. It forms a class of its own. And well it may, even for its minor attributes, when the island of Newfoundland at its mouth exceeds the area of Ireland; when the rest of its mouth could contain Great Britain; when an arm of the true deep sea runs from Cabot Strait five hundred miles inland to where the Saguenay river soundings go down beyond an average of a hundred fathoms; and when, three hundred miles farther inland still, on an island in an archipelago at the mouth of the Ottawa, another tributary stream, there stands the city of Montreal, one of the greatest seaports in the world.