changes of temperature, and itself determining the direction of the winds and the character of the weather, is shown graphically in figures 17 and 18. The winter or north-east monsoon does not penetrate into the Panjab, where light westernly and northernly winds
Fig. 18. Average Barometric and Wind Chart for July.
prevail during the cold season. What rain is received is due to land storms originating beyond the western frontier. The branch of the summer or south-west monsoon which chiefly affects the Panjab is that which blows up the Bay of Bengal. The rain-clouds striking the Eastern Himalaya are deflected to the west and forced up the