When we cannot find a satisfactory solution for any puzzling occurrence which we are desirous of investigating, perhaps the best way is to endeavour to accumulate a series of facts of the same kind. Some years ago, I was riding from Edinburgh: it was (as I happen to recollect) on the 12th of November, and in the evening. There had been, since past midday, a succession of those stormy clouds, driven by a westerly wind, which are common at that season. Perhaps the wind was a point or two to the north of west, if it makes any difference, and during the intervals there was always a comparative calm or slackening of the wind. I was once taken by one of these storm-clouds about Nether Libberton, on the Dalkeith road. I used the spur a little; and, having been a yeoman for many years, I was unconsciously holding a small rattan cane somewhat after the mode of "carry swords." Roused by the velocity of the wind, and the darkness of the passing cloud, I naturally turned my eyes to the right, and was not a little surprised to observe a pale clear flame, in form like that of a small candle, playing upon the point of the cane. Taking it for granted, forthwith, that a stream of electricity, attracted by the cane, was passing from the cloud through my body, and through the horse, into the ground, I instantly turned it downwards. At the time I did not wait to consider that I was in the hollow of the valley between one of the highest of the Pentlands and Arthur's Seat, and that there were higher objects than myself, and scattered trees in the neighbourhood far more likely to act upon the cloud, or be exposed to its influence. A short time after this happened, I mentioned the circumstance of the flame to a friend. He told me, in return, that once, when riding between Hawick and Jedburgh, during a dark and stormy night, he was greatly annoyed, for most part of the way, by two flames, like candles, that appeared to issue from his horse's ears. He certainly is as little likely to be affected by superstition as most men; but never before having heard of such a circumstance, and the idea of electricity not then occurring to his mind, he could not help thinking that Will o' the wisp and he, hoping it was nothing worse, had got into rather too close intimacy. Another Correspondent says this luminous "phenomenon may be often seen on a gravel walk upon a moist autumnal evening. It arises from something of a slimy nature emitted by the Scolopéndra eléctrica (one of the animals vulgarly called centipedes), which is luminous. As the animal crawls, it leaves a long train of phosphoric light behind it on the ground, which is often mistaken for the presence of a glow-worm. In all probability, one of these animals had recently crawled over the head of the horse, or rather, might be still crawling there, and the person who saw it unconsciously watched its progress." _The Short Sunfish_