From the mountaineer's point of view, little has been accomplished amongst the Himalaya, and of the thousands of peaks of 20,000 feet and upwards hardly twenty have been climbed. The properly equipped expeditions made to these mountains merely for the sport of mountaineering may be said to be less than half a dozen. Of course the officers in charge of the survey department have done invaluable work, which, however, often had to be carried out by men unacquainted (from a purely climbing point of view) with the higher developments of mountain craft. To this, however, there are exceptions, notably Mr. W. H. Johnson, who worked on the Karakoram range. To omit work done by the earlier travellers, the first prominent piece of mountaineering seems to have been achieved by Captain Gerard in the Spiti district. In the year 1818 he attempted the ascent of Leo Porgyul, but was unsuccessful after reaching a height of 19,400 feet (trigonometrically surveyed). Ten years later he made the first successful ascent of a mountain (unnamed) of 20,400 feet. Speaking of his wanderings in 1817-21, he says: 'I have visited thirty-seven places at different times between 14,000 and 19,400 feet, and thirteen of my camps were upwards of 15,000 feet.' During the years 1848-49-50 Sir Joseph Hooker made his famous journeys into the Himalaya from Darjeeling through Sikkim. Obtaining leave to travel in East Nepaul, he traversed a district that since then has been entirely closed to Europeans. By travelling to the westward of Darjeeling he crossed into Nepaul, explored the Tambur river as far as Wallanchoon, whence he ascended to the head of a snow pass, 16,756 feet, leading over to the valley of the Arun river, which rises far away northward of Kanchenjunga. On the pass he experienced his first attack of mountain sickness, suffering from headache, giddiness, and lassitude. At this point he was probably nearer to Devadhunga[C] (Mount Everest) than any European has ever been, the mountain being only fifty miles away. From the summit of another pass in East Nepaul, the Choonjerma pass, 16,000 feet, he no doubt saw Devadhunga. From here he returned to Sikkim, and travelled to Mon Lepcha, immediately at the south-west of Kanchenjunga. During the next year he visited the passes on the north-east of Kanchenjunga leading into Tibet and ascended three of them, the Kongra Lama pass, 15,745 feet; the Tunkra pass, 16,083 feet; and the Donkia pass, 18,500 feet. From Bhomtso, 18,590 feet, the highest and most northerly point reached by him, a magnificent view to the northward into Tibet was obtained; and Dr. Hooker mentions having seen from this point two immense mountains over one hundred miles distant to the north of Nepaul. It was during his return to Darjeeling that he and Dr. Campbell were made prisoners by the Raja of Sikkim.