The distance from the Rocky Mountains (which I suppose to be of primitive formation,) is upwards of one hundred and thirty miles.

The neighbouring plains are alluvial, the soil is calcareous, and contains numerous travelled fragments of limestone.

At a considerable distance below Edmonton, the river, continuing its course through the plains, becomes turbid, and acquires a white colour.

In this state it is drunk by the inmates of Carlton House, where the disease is known only by name.

It is said that the inhabitants of Rocky Mountain House, sixty miles nearer the source of the river are more severely affected than those at Edmonton.