Threshing is done by means of an axle with thin iron wheels.

If such primitive means can attain such satisfactory results, what could not modern agricultural science be made to do for Persia?
Sunset brings a cool breeze, which before nightfall develops into a cutting north-easter, and we shiver again under a bourka and heavy fur pelisse.

Crossing a ridge of rock, we descend upon a white plain, dim and indistinct in the twilight.

The ground crackles under our horses' feet.

It is frozen snow! A light shines out before us, however, and by ten o'clock we are snug and safe for the night in the telegraph-station of Deybid.
These sudden changes of temperature make the Persian climate very trying.