I certify that Mr. Wm. 13. Mackay attended the Class of Logic and Metaphysics during the session 1851-2, with great regularity; that his conduct, as far as known to me, was exemplary that in the examinations, oral and written, he acquitted himself most creditably; that he performed carefully all the prescribed Essays and Exercises; and that his general diligence and progress during the session deserve approbation