In answer to inquiries Mr Knapp informed Professor Barrett the builder was a stranger to the locality, and the spots where the rod moved were unlikely to suggest water below. The twig in the builder's hand, Mr Knapp says, in every case corroborated the dowser's indications, and hence he (the builder) was unmercifully chaffed, as he had treated the whole thing with such contempt. Mr Knapp says it is possible that the places indicated by the dowser might have been perceived by the builder, but it was the spontaneous and vigorous movement of the twig, evidently contrary to the holder's intention and against his will, that excited their astonishment. Dr Hutton, F.R.S., the distinguished mathematician--to whom the Royal Society entrusted the gigantic labour of making an abridgment of the whole of the Transactions of the Royal Society from its foundation in 1666 to the beginning of this century--gives the following account of his experiments with the divining rod as used by Lady Milbanke:-- "At the time appointed (eleven A.M., 30th May 1806) the lady, with all her family, arrived at my house on Woolwich Common, where, after preparing the rods, etc., they walked to the grounds, accompanied by the individuals of my own family and some friends, when Lady Milbanke showed the experiment several times in different places, holding the rod in the manner described elsewhere. In the places where I had good reason to know that no water was to be found the rod was always quiescent, but in other places, where I knew there was water below the surface, the rods turned slowly and regularly in the manner above described, till the twigs twisted themselves off below the fingers, which are considerably indented by so forcibly holding the rod between them.[3] "All the company stood close to Lady M. with all eyes intensely fixed on her hands and the rods to watch if any particular motion might be made by the fingers, but in vain; nothing of the kind was perceived, and all the company could observe no cause or reason why the rods should move in the manner they were seen to do. "After the experiments were ended, everyone of the company tried the rods in the same manner as they saw Lady M. had done, but without the least motion from any of them. And in my family, among ourselves, we have since then, several times, tried if we could possibly cause the rod to turn by means of any trick or twisting of the fingers, held in the manner Lady Milbanke did, but in vain; we had no power to accomplish it."