to its termination, and ploughs up the meadows in front of it with its irresistible share. In a line with the Riffelhorn, and rising over the latter so high as to make it almost vanish by comparison, was the Titan obelisk of the Matterhorn, from the base of which the Furgge glacier struggles downwards. On the other side are the Zmutt glacier, the Schoenbuehl, and the Hochwang, from the Dent Blanche; the Gabelhorn and Trift glaciers, from the summits which bear those names. Then come the glaciers of the Weisshorn. Describing a curve still farther to the right we alight on the peaks of the Mischabel, dark and craggy precipices from this side, though from the AEggischhorn they appear as cones of snow. Sweeping by the Alphubel, the Allaleinhorn, the Rympfischorn, and Strahlhorn--all of them majestic--we reach the pass of the Weissthor, and the Cima di Jazzi. This completes the glorious circuit within the observer's view. [Sidenote: COMPASS AT FAULT. 1858.] I placed my compass upon a piece of rock to find the bearing of the Goerner glacier, and was startled at seeing the sun and it at direct variance. What the sun declared to be north, the needle affirmed to be south. I at first supposed that the maker had placed the S where the N ought to be, and _vice versa_. On shifting my position, however, the needle shifted also, and I saw immediately that the effect was due to the rock of the Grat. Sometimes one end of the needle _dipped_ forcibly, at other places it whirled suddenly round, indicating an entire change of polarity. The rock was evidently to be regarded as an assemblage of magnets, or as a single magnet full of "consequent points." A distance of transport not exceeding an inch was, in some cases, sufficient to reverse the position of the needle. I held the needle between the two sides of a long fissure a foot wide. The needle set _along_ the fissure at some places, while at others it set _across_ it. Sometimes a little jutting knob would attract the north end of the needle, while a closely adjacent little knob would forcibly repel it, and attract the south end. One extremity of a ledge three feet long was north magnetic, the other end was south magnetic, while a neutral point existed midway between the two, the ledge having therefore the exact polar arrangement of an ordinary bar-magnet. At the highest point of the rock the action appeared to be most intense, but I also found an energetic polarity in a mass at some distance below the summit. [Sidenote: MAGNETISM OF ROCKS. 1858.]