But Oetinger also records another discovery of this description, which, he says, he fell upon unawares. A woman having brought him a large bunch of balm, he laid it under the tiles, which were yet warm with the summer’s heat, where it dried in the shade. But, it being in the month of September, the cold soon came, and contracted the leaves, without expelling the volatile salts. They lay there till the following June, when he chopped up the balm, put it into a glass retort, poured rain-water upon it, and placed a receiver above. He afterward heated it till the water boiled, and then increased the heat—whereupon there appeared on the water a coat of yellow oil, about the thickness of the back of a knife, and this oil shaped itself into the forms of innumerable balm-leaves, which did not run one into another, but remained perfectly distinct and defined, and exhibited all the marks that are seen in the leaves of the plant. Oetinger says he kept the fluid some time, and showed it to a number of people. At length, wishing to throw it away, he shook it, and the leaves ran into one another with the disturbance of the oil, but resumed their distinct shape again as soon as it was at rest, the fluid form retaining the perfect signature. Now, how far these experiments are really practicable, I can not say; their not being repeated, or not being repeated successfully, is no very decided argument against their possibility, as all persons acquainted with the annals of chemistry well know; but there is certainly a curious coincidence between these details and the experience of Billing, where it is to be observed that, according to his account—and what right have we to dispute it?—the figure, after being disturbed by Pfeffel, always resumed its original form. The same peculiarity has been observed with respect to some apparitions, where the spectator has been bold enough to try the experiment. In a letter to Dr. Bentley, from the Rev. Thomas Wilkins, curate of Warblington, in Hampshire, written in the year 1695, wherein he gives an account of an apparition which haunted the parsonage-house, and which he himself and several other persons had seen, he particularly mentions that, thinking it might be some fellow hid in the room, he put his arm out to feel it, and his hand seemingly went through the body of it, and felt no manner of substance, until it reached the wall. “Then I drew back my hand, but still the apparition was in the same place.” Yet this spectre did not appear above or near a grave, but moved from place to place, and gave considerable annoyance to the inhabitants of the rectory.