to the same point.

The lines of the streams in this last portion of their course, together with that which may be drawn across from stream to stream, form nearly an equilateral triangle, the distance being respectively 104, 110, and 115 miles.

So rapid is the final convergence of the two great rivers.
The Tigris and Euphrates are both streams of the first order.

The estimated length of the former, including main windings, is 1146 miles; that of the latter is 1780 miles.

Like most rivers that have their sources in high mountain regions, they are strong from the first, and, receiving in their early course a vast number of important tributaries, become broad and deep streams before they issue upon the plains.