These terms are not limited in their scope to the field of education. Anyone planning a conference, convention, committee, discussion, assembly, council, etc., might do well to consider the method for presenting the subject matter. How many of these meetings today are just talk? If each participant would consider himself as a Presentor of data or ideas that he is especially qualified to contribute to the group, there would be less misunderstanding and more conclusive action.

We are still expressing ourselves in meetings by the traditional methods the old patriarchs used to pass on the folklore of the tribe -- by word of mouth. While the newspaper, the movie and the radio are being used to present descriptive material to secure public approval, quantitative presentations are relatively rare in publicity campaigns. The introduction of quantitative expression in every phase of life can lend itself to great future progress. There has been some discussion of the effectiveness of graphic methods to convey facts and ideas, but no comprehensive analysis has thus

Rene Descartes, 1596-1650

GRAPHIC PRESENTATION

DEATH AFTER DARK

)930 1931 1932 1933 1934 1935 1936 1937

25.000 24.000 23.000 22.000 21.000 20.000 19.000 )6.000 17.000 16.000 15.000 14.000 13.000

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DAYLIGHT

How Charts Ought Not to Be Made

The omission of the zero line in this chart gives a false impression of the relative values of the number of accidents during the hours of darkness and