Seventy storms I have experienced on the summit of this peak, and during these it was struck but three times to my knowledge. One of these strokes fell a thousand feet below the top; two struck the same spot on the edge of the summit. The rock struck was granite, and the effects of the strokes were similar; hundreds of pounds of shattered rock fragments were flung horizontally afar. Out of scores of experiences in rain-drenched passes I have record of but two thunderbolts. Both of these were heavy. In all these instances the thunderbolt descended at a time when the storm-cloud was a few hundred feet above the place struck. During the greater number of high-altitude storms the cloud is in contact with the surface or but little removed from it. Never have I known the lightning to strike when the clouds were close to the surface or touching it. It is, however, common, during times of low-dragging clouds, for the surface air to be heavily charged with electrical fluid. This often is accompanied with strange effects. Prominent among these is a low pulsating hum or an intermittent _buz-z-z-z_, with now and then a sharp _zit-zit!_ Sometimes accompanying, at other times only briefly breaking in, are subdued camp-fire cracklings and roarings. Falling snowflakes, during these times, are occasionally briefly luminous, like fireflies, the instant they touch the earth. Hair-pulling is the commonest effect that people experience in these sizzling electrical storms. There is a straightening of the hairs and apparently a sharp pull upon each. As John Muir has it, "You are sure to be lost in wonder and praise and every hair of your head will stand up and hum and sing like an enthusiastic congregation." Most people take very gravely their first experience of this kind; especially when accompanied, as it often is, with apparent near-by bee-buzzings and a purplish roll or halo around the head. During these times a sudden finger movement will produce a crackling snap or spark.