3. Notice of a Remarkable Mirage Observed in the Firth of Forth

Extract

Some years ago, when visiting on the 31st of May the beautiful scenery of Dalmeny Park, I observed about three in the afternoon, from the terrace on which stand the ruins of Barenbougle Castle, some remarkable examples of mirage on the Firth of Forth which are perhaps worthy of record.

The atmosphere was uncommonly clear in every direction, sunshiny, warm, calm; and what little wind there was came from the south west. But a black, sultry-looking cloud was forming at the same time in the north-west, from which in an hour and a half afterwards, as I was on my way home to town, a severe thunderstorm gradually spread south-eastward over the whole Firth and surrounding country.