accept of my humble and penitent confession of these my offences, which I desire to acknowledge with shame and sorrow, and am resolved by Thy grace to amend. If Thou art pleased to hearken to the voice of my supplications, and grant my request on behalf of my dear wife in restoring her to health, I do promise and covenant through grace to turn from these backslidings, to express my thankfulness by a vigorous discharge of my duty as a Christian, a minister, and master of a family, and by an alms of ten pounds sterling to the poor in meat and money. Lord, pardon if there is anything in this presumptuous, or unbecoming a humble penitent sinner; and, Lord, accept of what is sincerely designed as a new bond upon my soul to my duty, through Jesus Christ, my Lord and Saviour.'
This fervid expression of devotion reveals an intensity of purpose which worked beneath the outwardly placid and discreet life. Mrs. Reid survived this critical illness for nearly half a century.
Much of Reid’s time at New Machar, according to his brother-in-law Mr. Rose, was spent in meditative thought, with an attention to the activities of his own mind of which few men are capable. Traditions of solitary walks immersed in study were long in circulation. He found his chief recreation, we are told, in the manse garden or in botanical observations. His society attracted his neighbours. With Sir Archibald Grant of Monymusk he maintained a lifelong intimacy. He never forgot New Machar, and long after, in times of distress, anonymous gifts were traced to his thoughtful but modest beneficence.
Three years before Reid left New Machar, when he was in his thirty-eighth year, he made his first appearance in print, in a short paper contributed to the Royal Society, which appeared in their Transactions in October 1748. It is called 'An Essay on Quantity.' It was occasioned by a book published more than twenty years before, the Inquiry