This drawing is accompanied by some Sensible Scientific explanation. “By the antiquary, it has always been considered as the work of art, being a Druidical monument employed in some of the ceremonies and superstitions practised by them [...]; the geologist, however, considers the Logan-rock to be the work of nature alone, as granite is well known naturally to disintegrate into masses of a somewhat [cubical] form [...] thus rude spheroidal blocks, like the Logan-rock, may occasionally be formed, although an exceedingly rare combination of circumstances will be required in order to produce a block possessing this peculiar property.”
Image credit: Saturday Magazine, Nov 7th, 1835.
