Prefatory Note:

This address was read before the Graduate Club of Leland Stanford Junior University on February 14, 1899. It was afterwards, by request, repeated before the Congregation of Temple Emanu-El in San Francisco, and before the Berkeley Club of Oakland. It is published for the Graduate Club by the courtesy of Mr. John J. Valentine.

David Starr Jordan.

Polo Alto, California. March 15, 1899.