John S. Mackenzie 
Manual of Ethics [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The most considerable alterations, however, occur in Book I. I have thought it desirable to add a good deal of new material on the development of the moral life and of the moral judgment. It may be held that these sub jests belong more properly to Sociology and Psychology than to Ethics in the stricter sense; but I have found that their absence is a more serious defect than their presence. I have also added, at the beginning of Book II., a short historical account of the leading points of view in ethical.