For the first time one of the inert, wasted hands raised itself and pointed stiffly to a high shelf on the farther side of the room. There, in a neat row, stood more than a dozen cylinders of a metal I had never seen before—cylinders about a foot high and somewhat less in diameter, with three curious sockets set in an isosceles triangle over the front convex surface of each. One of them was linked at two of the sockets to a pair of singular-looking machines that stood in the background. Of their purport I did not need to be told, and I shivered as with ague. Then I saw the hand point to a much nearer corner where some intricate instruments with attached cords and plugs, several of them much like the two devices on the shelf behind the cylinders, were huddled together.