Yet I have digressed to grumble at the only means by which a sight of these hidden waters was possible. When we passed in July, there were no wild-fowl on the lake except the bar-headed geese and Brahminy duck. The ruddy sheldrake, or Brahminy, is found all over Tibet, and will be associated with the memory of nearly every march and camping-ground. It is distinctly a Buddhist bird. From it is derived the title of the established Church of the Lamas, the Abbots of which wear robes of ruddy sheldrake colour, Gelug-pa.[15] In Burmah the Brahminy is sacred to Buddhism as a symbol of devotion and fidelity, and it was figured on Asoka's pillars in the same emblematical character.[16] The Brahminy is generally found in pairs, and when one is shot the other will often hover round till it falls a victim to conjugal love. In India the bird is considered inedible, but we were glad of it in Tibet, and discovered no trace of fishy flavour.

Early in April, when we passed the Bam Tso and Kala Tso we found the lakes frequented by nearly all the common migratory Indian duck; and again, on our return large flights came in. But during the summer months nothing remained except the geese and sheldrake and the goosander, which is resident in Tibet and the Himalayas. I take it that no respectable duck spends the summer south of the Tengri Nor. At Lhasa, mallard, teal, gadwall, and white-eyed pochard were coming in from the north as we were leaving in the latter half of September, and followed us down to the plains. They make shorter flights than I imagined, and longer stays at their fashionable Central Asian watering-places.

We marched three days along the banks of the Yamdok Tso, and halted a day at Nagartse. Duck were not plentiful on the lake. Black-headed gulls and redshanks were common. The fields of blue borage by the villages were an exquisite sight. On the 22nd we reached Pehte. The jong, a medieval fortress, stands out on the lake like Chillon, only it is more crumbling and dilapidated. The courtyards are neglected and overgrown with nettles. Soldiers, villagers, both men and women, had run away to the hills with their flocks and valuables. Only an old man and two boys were left in charge of the chapel and the fort. The hide fishing-boats were sunk, or carried over to the other side. On July 24 we left the lake near the village of Tamalung, and ascended the ridge on our left to the Khamba Pass, 1,200 feet above the lake level. A sudden turn in the path brought us to the saddle, and we looked down on the great river that has been guarded from European eyes for nearly a century. In the heart of Tibet we had found Arcadia—not a detached oasis, but a continuous strip of verdure, where the Tsangpo cleaves the bleak hills and desert tablelands from west to east.

All the valley was covered with green and yellow cornfields, with scattered homesteads surrounded by clusters of trees, not dwarfish and stunted in the struggle for existence, but stately and spreading—trees that would grace the valley of the Thames or Severn.

We had come through the desert to Arcady. When we left Phari, months and months before, and crossed the Tang la, we entered the desert.

Tuna is built on bare gravel, and in winter-time does not boast a blade of grass. Within a mile there are stunted bushes, dry, withered, and sapless, which lend a sustenance to the gazelle and wild asses, beasts that from the beginning have chosen isolation, and, like the Tibetans, who people the same waste, are content with spare diet so long as they are left alone.

Every Tibetan of the tableland is a hermit by choice, or some strange hereditary instinct has impelled him to accept Nature's most niggard gifts as his birthright, so that he toils a lifetime to win by his own labour and in scanty measure the necessaries which Nature deals lavishly elsewhere, herding his yaks on the waste lands, tilling the unproductive soil for his meagre crop of barley, and searching the hillsides for yak-dung for fuel to warm his stone hut and cook his meal of flour.

Yet north and south of him, barely a week's journey, are warm, fertile valleys, luxuriant crops, unstinted woodlands, where Mongols like himself accept Nature's largess philosophically as the most natural thing in the world.

It seems as if some special and economical law of Providence, such a law as makes at least one man see beauty in every type of woman, even the most unlovely, had ordained it, so that no corner of the earth, not even the Sahara, Tadmor, Tuna, or Guru, should lack men who devote themselves blindly and without question to live there, and care for what one might think God Himself had forgotten and overlooked.

These men—Bedouin, Tibetans, and the like—enjoy one thing, for which they forego most things that men crave for, and that is freedom. They do not possess the gifts that cause strife, and divisions, and law-making, and political parties, and changes of Government. They have too little to share. Their country is invaded only at intervals of centuries. On these occasions they fight bravely, as their one inheritance is at stake. But they are bigoted and benighted; they have not kept time with evolution, and so they are defeated. The conservatism, the exclusiveness, that has kept them free so long has shut the door to 'progress,' which, if they were enlightened and introspective, they would recognise as a pestilence that has infected one half of the world at the expense of the other, making both unhappy and discontented.