Even in perfectly calm weather, when there is no wind whatever, this upheaval sometimes arises in a mass of foam.
"Tossed about by violent waves and unaccountable currents, boats have been swept beyond all control.

Sometimes they have been dashed one against another, and serious damage has resulted.
"This confusion of the waters evidently has its origin somewhere in the depths of the lake; and various explanations have been offered to account for it.

At first, it was suggested that the trouble was due to seismic forces, to some volcanic action beneath the lake; but this hypothesis had to be rejected when it was recognized that the disturbance was not confined to one locality, but spread itself over the entire surface of the lake, either at one part or another, in the center or along the edges, traveling along almost in a regular line and in a way to exclude entirely all idea of earthquake or volcanic action.
"Another hypothesis suggested that it was a marine monster who thus upheaved the waters.

But unless the beast had been born in the lake and had there grown to its gigantic proportions unsuspected, which was scarce possible, he must have come there from outside.

Lake Kirdall, however, has no connection with any other waters.