Note A — RHYTHMS AND GEOLOGIC TIME.A By G. K. GILBERT, UNITED STATES GEOLOGICAL SURVEY.
Reading edition
Read to the American Association for the Advancement of Science, at New York, June 26, 1900, as the address of the retiring President.
Reading edition
Read to the American Association for the Advancement of Science, at New York, June 26, 1900, as the address of the retiring President.