I hereby certify that having been on several occasions appointed one of the examinators of a school taught by Mr. Wm. B. Mackay, at two different stations, together with other examinators present, I not only felt the greatest freedom, but considered myself in duty bound, then, as I do now, to express my highest approbation of the experience, qualifications, and efficiency of Mr. Mackay as a teacher, and of the very creditable progress of his scholars, both in the initiatory branches of education and also in scripture history and doctrine, as well as in classical and scientific knowledge. The very mild and prudently managed discipline adopted by Mr. Mackay had evidently a tendency both to gain the affections of his pupils and to stimulate their diligence in the pursuit of useful knowledge.