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. Owing to unfamiliarity with the technical terms of regu lar medical books on the subject of anatomy, physiology and pathology Of the eye and the limitations of his professional and legal requirements on these subjects, the student and practitioner Of Optometry has, as a class, been unable to get the story as he should know it.