""Four Lectures On The Clergy And Their Duties: Addressed To The Unattached Students Of The University Of Oxford (1874)"" is a book written by Henry Mackenzie. The book is a series of lectures that were delivered to the unattached students of the University of Oxford in 1874. The lectures focus on the role of the clergy and their duties in society. Mackenzie discusses the importance of the clergy in providing moral guidance and support to their congregations...