The great difficulties we experienced in pushing through supplies to Tuna, which is less than 150 miles from our base railway-station at Siliguri, show the absurdity of the idea of a Russian advance on Lhasa. The nearest Russian outpost is over 1,000 miles distant, and the country to be traversed is even more barren and inhospitable than on our frontier.

Up to the present the route to Chumbi has been viâ Siliguri and the Jelap and Nathu Passes, but the natural outlet of the valley is by the Ammo Chu, which flows through Bhutan into the Dooars, where it becomes the Torsa. The Bengal-Dooars Railway now extends to Madhari Hat, fifteen miles from the point where the Torsa crosses the frontier, whence it is only forty-eight miles as the crow flies to Rinchengong in the Chumbi Valley. When the projected Ammo Chu cart-road is completed, all the difficulty of carrying stores into Chumbi will be obviated. Engineers are already engaged on the first trace, and the road will be in working order within a few months. It avoids all snow passes, and nowhere reaches an elevation of more than 9,000 feet. The direct route will shorten the journey to Chumbi by several days, bring Lhasa within a month's journey of Calcutta, and considerably improve trade facilities between Tibet and India.

CHAPTER VI THE ACTION AT THE HOT SPRINGS

The village of Tuna, which lies at the foot of bare yellow hills, consists of a few deserted houses. The place is used mainly as a halting-stage by the Tibetans. The country around is sterile and unproductive, and wood is a luxury that must be carried from a distance of nearly fifty miles.

It was in these dismal surroundings that Colonel Younghusband's mission spent the months of January, February, and March. The small garrison suffered all the discomforts of Phari. The dirt and grime of the squalid little houses became so depressing that they pitched their tents in an open courtyard, preferring the numbing cold to the filth of the Tibetan hovels. Many of the sepoys fell victims to frost-bite and pneumonia, and nearly every case of pneumonia proved fatal, the patient dying of suffocation owing to the rarefied air.

Colonel Younghusband had not been at Tuna many days before it became clear that there could be no hope of a peaceful solution. The Tibetans began to gather in large numbers at Guru, eight miles to the east, on the road to Lhasa. The Depon, or Lhasa General, whom Colonel Younghusband met on two occasions, repeated that he was only empowered to treat on condition that we withdrew to Yatung. Messages were sent from the Tibetan camp to Tuna almost daily asking us to retire, and negociations again came to a deadlock. After a month the tone of the Tibetans became minatory. They threatened to invest our camp, and an attack was expected on March 1, the Tibetan New Year. The Lamas, however, thought better of it. They held a Commination Service instead, and cursed us solemnly for five days, hoping, no doubt, that the British force would dwindle away by the act of God. Nobody was 'one penny the worse.'

Though we made no progress with the Tibetans during this time, Colonel Younghusband utilized the halt at Tuna in cementing a friendship with Bhutan. The neutrality of the Bhutanese in the case of a war with Tibet was a matter of the utmost importance. Were these people unfriendly or disposed to throw in their lot with their co-religionists, the Tibetans, our line of communications would be exposed to a flank attack along the whole of the Tuna Plain, which is conterminous with the Bhutan frontier, as well as a rear attack anywhere in the Chumbi Valley as far south as Rinchengong. The Bhutanese are men of splendid physique, brave, warlike, and given to pillage. Their hostility would have involved the despatch of a second force, as large as that sent to Tibet, and might have landed us, if unprepared, in a serious reverse. The complete success of Colonel Younghusband's diplomacy was a great relief to the Indian Government, who were waiting with some anxiety to see what attitude the Bhutanese would adopt. Having secured from them assurances of their good will, Colonel Younghusband put their friendship to immediate test by broaching the subject of the Ammo Chu route to Chumbi through Bhutanese territory. Very little time was lost before the concession was obtained from the Tongsa Penlop, ruler of Bhutan, who himself accompanied the mission as far as Lhasa in the character of mediator between the Dalai Lama and the British Government. The importance of the Ammo Chu route in our future relations with Tibet I have emphasized elsewhere.

I doubt if ever an advance was more welcome to waiting troops than that which led to the engagement at the Hot Springs.

For months, let it be remembered, we had been marking time. When a move had to be made to escort a convoy, it was along narrow mountain-paths, where the troops had to march in single file. There was no possibility of an attack this side of Phari. The ground covered was familiar and monotonous. One felt cooped in, and was thoroughly bored and tired of the delay, so that when General Macdonald marched out of Phari with his little army in three columns, a feeling of exhilaration communicated itself to the troops.