But now we began to be beset by a difficulty which while in the forest zone of the mountains we had not anticipated—namely, the absence of water, caused by the porous character of the limestone rock; and though we succeeded in finding our path again, all the runnels we passed were dried by summer drought. The woods were very silent, and there was no morning song of birds beyond the cooing of a dove; but while we were resting we heard a deep musical hum among the tree-tops, proceeding from myriads of gnats, some of which were droning below. We kept gradually ascending the back of the Planina, our path continually disappearing or losing itself in a maze of lesser tracks, which might have been made as much by animals as by man; and every now and then we had to scramble on as best we could over tree-trunks of monstrous girth that barred our path. But still no water to make breakfast palatable! till about two hours after starting we came to a stagnant pool or puddle about the size of an ordinary washing-basin, which, as necessity knows no law, we were driven to make use of, and to pick the tadpoles out of our tea as best we might! But how describe this forest scenery! how paint, so that others may see as we saw them, the golden rays of the rising sun slanting between the leafy tiers of the beeches, intersecting their shady trunks with pillars of light, shimmering beyond against the dark mountain flank; not dappling it in round noon-day patches, but streaking it horizontally with golden ripples, comparable to nothing but mackerel clouds glorified by the sunset, trailing across some darker tract of sky. Now and then the mighty trunks and branches frame vistas of mountain and valley, flooded still by a forest sea unflecked by habitation—an enamel of quiet blue. Then the luminous foliage of the beeches gives place for a while to more sombre pines, whose turpentiny fragrance floats like morning incense down the forest aisles. Hour after hour, as we ascend, the forest still looms around us, but the scenery is perpetually changing.