"The constitutional effects of spasms and convulsive twitchings took place more or less in all the veins, but copper emanations excited very strong and disagreeable spasmodic symptoms, accompanied by pains about the heart, by flatulent movements in the bowels, and by abundant eructations of air. On lead, there seemed to be less unpleasant consequences, but stronger again on the mines of antimony. Having previously determined that for Bleton, on all the metals except iron, there existed a sphere of electric activity which propagated itself toward the west, a great number of experiments were made, which always had the same results. At the depth of two, three or four feet under ground were buried gold, silver, copper, tin, lead and iron. The weight of each was only from five to eight pounds. In other similar pits, pyrites of all kinds, sulphur, coal, resin, wax and lard were buried. All these different deposits were made at distances from each other in gardens or in open country, and they were so well covered over and concealed, that nothing could be perceived but private marks, to be known only by certain assistants. Over the resin, wax and lard, Bleton experienced nothing. Over the coal, there was a decided effect, the convulsive tremor of muscle was manifest, and the rod rotated from behind forward. Over the iron, the same indications, but more energetic. A feeble impression from the sulphur, but sufficient to establish a difference between it and the two preceding; and the rod over the sulphur turned from before backward. Pyrites produced the same rotation as sulphur, and a slight tendency of the electric sphere toward the west. Gold and copper especially exhibited strongly this singular tendency of the active electric emanations. Over silver, tin and lead, also, it was more remarkable. It extends itself more or less from the focus of the metals according to their depth and their mass. For example, in describing a circle having a radius of three or four feet from this focus, Bleton felt absolutely no action except on the line of the west. It was the same when, in proceeding from the vertical point of the focus, he successively traversed all the radii of the circle, or even if he went from all the points of the circumference to proceed to the center. In these two inverse proceedings it was always only on the radii going westward, that his person and the rods were affected by movements more or less intense, according to the kinds of metal.