I. An account of the repetition of an experiment touching motion given bodies included in a glass, by the approach of a finger near its outside: with other experiments on the effluvia of glass

This experiment having been but imperfectly made before, I thought a repetition such a surprising phænomenon would not be unacceptable to the Society, seeing, not only the apparatus was better adapted, but the appearance was much more conspicuous. For it was observable, that after the motion and attrition had been continu´d about 2 or 3 minutes, and then ceasing, the threads within seem´d to hang in a careless confusion, and were not instantaneously erected, but in about 3 or 4 seconds of time they were so, every way towards the circumference of the glass; and seemingly with so much stourness, that a motion of the glass alone would give them no great disorder