Read the following passage and answer the questions given below.

The sun was still red and large: the sky above cloudless, and light blue glaze poured over baking clay: but close over the ground a dirty grey haze hovered. As they followed the lane towards the sea they came to a place where, yesterday, a fair-sized spring had bubbled up by the roadside. Now it was dry. But even as they passed some water splashed out, and then it was dry again, although gurgling inwardly to itself. But the group of children were hot, far too hot to speak to one another: they sat on their ponies as loosely as possible, longing for the sea.

The morning advanced. The heated air grew quite easily hotter, as if from some enormous furnace from which it could draw at will. Bullocks only shifted their stinging feet when they could bear the soil no longer: even the insects were too lethargic to pipe, the basking lizards hid themselves and panted. It was so still you could have heard the least buzz a mile off. Not a naked fish would willingly move his tail. The ponies advanced because they must. The children ceased even to think.