rough guess

As a rough guess, beyond those tremendous highlands lay the plains of Lower Argentina—the black, wind-swept, semidesert pampas.

Of Sheep, there were a large number present—at a rough guess, Two Thousand—embracing specimens of widely contrasted varieties.

This steep bank, for most snow-walls are little more, may have been at a rough guess 800 feet high.

At a rough guess these were at least twelve feet high, and without a foothold of any sort or description.

At a rough guess I should say that every pound laid down at the fort was worth from three to twenty guineas per pound in fur.