Mr. Whymper's first escalade in the Alps was the ascent of Mont Pelvoux in Dauphiné, the account of which is reprinted from 'Peaks, Passes, and Glaciers.' Sundry other subordinate, and yet novel and arduous ascents are recounted; with interspersed dissertations on Alpine climbing, on glaciers, on mountain lakes, &c., with criticisms on the erosion theories of Professors Tyndall and Ramsay. But the book, as we have said, is a history of the conquest of the Matterhorn. Between the years 1861-1865, Mr. Whymper made seven unsuccessful attempts to ascend the Matterhorn--four or five attempts having also been made by others; two by Professor Tyndall in 1860 and 1862, who, on the latter occasion, reached within 600 feet of the summit. These attempts were made on the south-west ridge. Mr. Whymper's successful attempt was made on the east face, which, from the Gorner Grat, is so familiar to tourists, and looks like the side of an obelisk; its profile, however, shows the angle to be less than 45°, and the ascent is comparatively easy. Some of the most experienced guides had given up the Matterhorn as inaccessible. Almer decidedly declined it. 'Anything but the Matterhorn,' said he, thinking it hopeless. The two Cassels proved treacherous, and finessed with Mr. Whymper, while completing arrangements with Signor Giordano, who started up the south-west side from Breil, on July 11, 1865. On the 12th, Mr. Whymper crossed the St. Theodule, for Zermatt, having been joined by Lord Francis Douglas and Peter Taugwalder the younger; at Zermatt he found Michael Croz, who had been engaged by the Rev. Charles Hudson and his friend, Mr. Hadow, to attempt the Matterhorn. The two parties united, and started on the 13th at half-past five, four tourists and four guides; by twelve o'clock they had easily ascended 11,000 feet; they halted for the day, and pitched their tent. At 9.55 on the 14th they had reached the height of 14,000 feet, at the base of what, from the Riffell, seems the overhanging summit. They then crossed the ridge to the northern side, the general slope of the mountain being less than 40°. Only one part, of about 400 feet, was really difficult; it was surmounted, and 200 feet of easy snow brought them to the summit at 1.40. The party from Breil had been four days on the mountain; they were seen at an immense distance below; the shouts of Mr. Whymper's party, and some stones which they rolled down to attract attention, frightened them. 'The Italians turned and fled,' but whether from superstition, as Mr. Whymper implies, or from fear of the stone avalanche, so ominously directed upon them, we are not told. The fatal accident on the descent, when five out of the eight perished--three travellers and two guides--seems, like the accident on the Col du Géant two or three years before, to have been caused by no special difficulty. Mr. Hadow's foot slipped; he fell against one of the guides, and knocked him down; the party was roped together, and but for the providential breaking of the rope the three who were saved must have been precipitated with the rest 4,000 feet, down to the Matterhorngletscher. Some sixteen ascents of the Matterhorn have been subsequently made, but it must ever be an arduous and perilous expedition, save to the best trained and most experienced cragsmen.