First we climbed into an opening high up in the north wall. It seemed to run parallel with the main passage, and soon we beheld daylight in front. Ere we reached the open air, however, we came to a steep drop, and found that the branch had simply brought us back to the vestibule of the cavern. Another opening, near the entrance, running due north, proved more interesting, leading eventually to a bell chamber, floored, walled, and roofed with polished carbonate. Someone had reached this point twenty years ago, so dates and initials testified; but there were virgin passages branching off to left and right for us to investigate, as far as bodies of speleological slimness were admissible. A squeeze through a crevice in the east wall led into a parallel tunnel, depressingly low and painfully narrow, which seemed to run on indefinitely to the north. The soft clay floor showed it was at times the path of a heavy stream. Northward, it shrank to a mere drain-pipe; southward it led by one joint and culvert to another, all at right angles, into other straight channels, all going in the same general direction. My companion stuck fast a little way beyond the first tunnel; I pushed on like a weevil into the maze of perforations, but met the same fate at last, not giving in, however, until I had been held as in a vice at one point for a good five minutes, with boot jammed, candle out, and no room to get my hand to the pocket where the waterproof matches were safely stowed away. It was still possible to see a long way ahead, by candlelight and magnesium; and we made out that north of the known cave lies a whole network of dry waterways, the principal channels running due north, roughly parallel to the Limestone escarpment in which the cave mouth opens, and all connected together by rectangular branches. One channel brought us within view of daylight; but the crevice was too small for anything but a rabbit, and we had to return by the same arduous and abrading passages we had come by. As old Fox would have said, the things we saw were "very handsome," but we could not tempt him to enter this uncomfortable region. E. A. B. CAVE EXPLORING AT ABERGELE