I had bought a celestial planisphere to study the constellations by, and, having fixed it on a frame, when the nights were fine and the sky clear, I went into the garden; and fixing the frame on four sticks, something higher than myself, which I drove into the ground, turned the planisphere downwards, and contrived to light it by means of a candle (which I put in a pail to prevent the wind from blowing it out) and then placed in the centre of the above--mentioned four supporters; this done, I examined the stars with my glass, and from time to time referring to my planisphere, endeavored to distinguish the various constellations.

I think I have before observed that our garden was on a terrace, and lay open to the road.

One night, some country people passing very late, saw me in a most grotesque habit, busily employed in these observations: the light, which struck directly on the planisphere, proceeding from a cause they could not divine (the candle being concealed by the sides of the pail), the four stakes supporting a large paper, marked over with various uncouth figures, with the motion of the telescope, which they saw turning backwards and forwards, gave the whole an air of conjuration that struck them with horror and amazement.

My figure was by no means calculated to dispel their fears; a flapped hat put on over my nightcap, and a short cloak about my shoulder (which Madam de Warrens had obliged me to put on) presented in their idea the image of a real sorcerer.

Being near midnight, they made no doubt but this was the beginning of some diabolical assembly, and having no curiosity to pry further into these mysteries, they fled with all possible speed, awakened their neighbors, and described this most dreadful vision.