does "revolving the disc" caused by "attachments" or "sliding the table"? what is the meaning of "follow" here?
Mr. S. B. Brittan, editor of The Spiritual Telegraph, gives the following condensed account of some of Hare's experiments: First, to satisfy himself that the movements were not the works of mortals, he took brass billiard balls, placed them on zinc plates and placed the hands of the mediums on the balls and, to his very great astonishment the tables moved. He next arranged a table to slide backward and forward, to which attachments were made, causing a disc to revolve containing the alphabet, hidden from the view of the mediums. The letters were variously arranged, out of their regular consecutive order, and the spirit was required to place them consecutively or in their regular places. And behold, it was done! Then followed intelligent sentences which the medium could not see or know the import of till they were told him. Again he tried another capital test. The long end of a lever was placed on spiral scales with an index attached and the weight marked; the medium's hand rested on the short end of the beam, where it was impossible to give pressure downward, but if pressed it would have a contrary effect and raise the long end; and yet, most astounding, the weight was increased several pounds on the scale.
source:http://gutenberg.net.au/ebooks03/0301051h.html _ hos by acd