Dec 1839.
"The clearest tokens of His mighty working and last night the work was so glorious that hardly one out of 150 seemed free from deep impressions of the Word and Spirit of Jesus and many were evidently pricked in their hearts, whilst some heavy-laden souls emerged into the glorious liberty of the children of God. This forenoon again, from 200-300 came to the church between one o'clock to three o'clock to converse about their state, with whom we had a united meeting of the most blessed time."
Rev W C Burns letter dated 30/12/39.
Thanks to Tom Lennie's 'Land of Many Revivals', page 346.
I do not know where these meetings took place.