When peace was concluded in 1815, he resumed his professorial duties.
The synod of Aberdeen petitioned the general assembly to allow him to continue his professorial duties without taking the covenant, but this was refused.
Although his professorial duties were demanding of his time, he kept a keen eye on leaving his research legacy.
From 1867 to 1878, Tchaikovsky combined his professorial duties with music criticism while continuing to compose.
He retired from his active professorial duties in 1989.
The zeal with which he discharged his professorial duties was indeed of the most unremitting character.
About the same time he was presented to the prebend of Clondahorky, Donegal, and resided there when not called by his professorial duties to Dublin.
Even at Roeselare, while performing his duties as teacher, he began that literary activity, which was thenceforth ever associated with his professorial duties.
Henceforth he devoted himself without reserve to his professorial duties.