It is to the enlarged application of the principle of graphical representation, that the last ten years of a life, formerly spent in the accumulation and classification of recorded know1edge, have been devoted. How well I have succeeded, I shall shortly show you. But first I must tell you by what means I have triumphed over oblivion and set upon myself the crown of prophecy.
"In these charts and relief maps, horizontal distance represents tine; vertical distance, space, or sections of country. Red, yellow, blue and black lines permit recording four social or other conditions at once, while elevation and degree of roughness of surface add two more to the number simultaneously expressible.
"As a simple instance, this chart is devoted to the Sacredness of the Marriage Relation, from the year one of the Christian era to the present day. The portions to the left indicate early periods, those in the centre, present time; those at the right, time to come; each decade being represented by one-half inch of length of the chart. The various strips are devoted to different geographical divisions; that given to
