“ Its most important physical subdivisions are the Salt range in the north, the valleys of the Chenab and Jhelum, and the plains between those rivers and between the Jhelum and the Salt range. The characteristics of these two plains are widely different: the desert portion of the southern plain is termed the bar; the corresponding tract north of the Jhelum is known as the thal. The climate of the plains is hot and dry, but in the Salt range it is much cooler; the annual rainfall averages about 15 in. ”