Observing the shore of Greenland in July 1820, explorer William Scoresby was surprised to see it change before his eyes:

The general telescopic appearance of the coast was that of an extensive ancient city abounding with the ruins of castles, obelisks, churches and monuments, with other large and conspicuous buildings. Some of the hills seemed to be surmounted by turrets, battlements, spires, and pinnacles; while others, subjected to one or two reflections, exhibited large masses of rock, apparently suspended in the air, at a considerable elevation above the actual termination of the mountains to which they referred.

All of this was continually changing even as he watched, Scoresby writes. But “notwithstanding these repeated changes, the various figures represented in the drawing had all the distinctness of reality; and not only the different strata, but also the veins of the rocks, with the wreaths of snow occupying ravines and fissures, formed sharp and distinct lines, and exhibited every appearance of the most perfect solidity.”

On the 18th of December, 1795, several persons, near the house of Captain Topham, in Yorkshire, heard a loud noise in the air, followed by a hissing sound, and soon after felt a shock, as if a heavy body had fallen to the ground at a little distance from them. In reality, one of them saw a huge stone fall to the earth, at the distance of eight or nine yards from the place where he stood. When he first observed it, it was seven or eight yards above the ground; and in its fall, it threw up the mould on every side, burying itself twenty-one inches in the earth. This stone, on being dug up, was found to weigh 56 lbs.

— Cabinet of Curiosities, Natural, Artificial, and Historical, 1822

Mr. Brograve, of Hamel, near Puckridge in Hertfordshire, when he was a young man, riding in a lane in that county, had a blow given him on his cheek: (or head) he looked back and saw that nobody was near behind him; anon he had such another blow, I have forgot if a third. He turned back, and fell to the study of the law; and was afterwards a Judge. This account I had from Sir John Penruddocke of Compton-Chamberlain, (our neighbour) whose Lady was Judge Brograve’s niece.

— John Aubrey, Miscellanies Upon Various Subjects, 1696

The Journal of the Asiatic Society of Bengal isn’t known for its romance. But one 1896 article has become famous for its account of a bizarre episode in Southeast Asia. Ethelbert Skertchley describes the Berbalangs, a species of ghoul in the folklore of Cagayan de Sulu, an island in the southwestern Philippines. These creatures, he explains, can adopt an astral form when seeking human flesh. It’s all pretty scholarly until the end, when Skertchley describes his own encounter near a Berbalang village:

There was not a breath of air stirring, and we were in the middle of an open valley with no trees about when we heard a loud moaning noise like someone in pain. … Presently the sound died away to a faint wail and the sound of wings became audible, while a lot of little dancing lights, like fire-flies, only reddish, passed over us.

On leaving the village, Skertchley passed an isolated house, where his native companion indicated the ghouls must have gone. The next day the writer returned to the scene:

I entered the house and looked round, but could see no one; going farther in, I suddenly started back, for huddled up on the bed, with hands clenched, face distorted, and eyes staring as in horror, lay my friend Hassan–dead.

Nothing more is said. Skertchley concludes simply by writing, “I have stated above the facts just as they occurred, and am quite unable to give any explanation of them.” If the editors received any further information, they never published it.