SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE. 



CONTENTS. 

 Friday, Maech 30, 1906. 



The American Association for the Advance- 

 ment of Science : — 

 On some Post-Eocene and other Formations 

 of the Gulf Region of the United States: 

 Pkofessoe Eugene A. Smith 481 



Anthropology at the South African Meeting 

 of the British Association for the Advance- 

 ment of Science: Peofessoe Alfeed C. 

 Haddon 491 



Scientific Books: — 



Duerden on the Coral Siderastrea, Radians 

 and its Post-larval Development : H. V. W. 

 Bartwig's Die Krystallgestalten der Min- 

 eralogie in Stereoskopischen Bildern: Peo- 

 fessoe John E. Wolff 497 



Scientific Journals and Articles 499 



Societies and Academies: — 



The American Physical Society: Peofessoe 

 Eenest Meeeitt. The San Francisco Sec- 

 tion of the American Mathematical Society: 

 Peofessoe G. A. Milleb. The Society of 

 Geohydrologists : M. L. Fullee. The 

 Chemical Society of Washington: Db. C. E. 

 Watees. The Torrey Botanical Club: C. 

 Stuaet Gageb. The New York Academy 

 of Sciences, Section of Biology: Peofessoe 

 M. A. BiGELOw 500 



Discussion and Correspondence: — 



A Case of Isolation without Barriers: De. 

 A. E. Oetmann. Factors of Species-forma- 

 tion: De. 0. P. Cook i 504 



Special Articles: — 



The Possibility of Psychical Factors in 

 Illusions of Reversed Motion: Peofessoe 

 Guy Monteose Whipple. A Note on Mid- 

 Cretaceous Geography : Edwaed W. Beeey. 

 Age of Petroleum Deposits: E. T. Dumble. 507 



Current Notes on Meteorology: — 



Temperature in Cyclones and Anticyclones ; 

 Clouds and Health; Notes: Peofessoe R. 

 DeC. Wabd 511 



Entomological Notes: De. Nathan Banks.. 512 



Robert Ogden Doremus: Peofessoe Chables 

 F. Chandlee 513 



A Standard Agricultural Course 514 



The Metric System before Congress 515 



The Congress of the United States 516 



I'he Jubilee of the Academy of Science at St. 



Louis 517 



Scientific Notes and News 517 



University and Educational News 519 



MSS. intended for publication and books, etc., intended for 

 review should be sent to the Editor of Sciehce, Garriaon-on- 

 Hudson, N. Y. 



THE AMERICAN ASSOCIATION FOR THE 

 ADVANCEMENT OF SCIENCE. 

 ON SOME POST-EOCENE AND OTHER FOR- 

 MATIONS OF THE GULF REGION 

 OF THE UNITED STATES. 



In 1871 Dr. Eugene W. Hilgard, for- 

 merly state geologist of Mississippi, read 

 before the American Association for the 

 Advancement of Science a paper 'On the 

 Geology of the Gulf of Mexico.' This 

 paper was supplemented in 1881 by an- 

 other, ' On the Later Tertiaries of the Gulf 

 of Mexico,' in which account was taken of 

 the geological investigations made in the 

 interval. 



In both these papers that problematical 

 formation, the Grand Gulf, held the chief 

 place of interest, and the hypothesis of a 

 temporary and partial isolation of the gulf 

 from the Atlantic Ocean was urged as be- 

 ing necessary to account for its phenomena. 



On the present occasion, I purpose to 

 speak of some additions to our knowledge 

 of the geology of the gulf coastal plain, 

 since 1881, and especially of the post- 

 Eocene formations ; and if in this summary 

 I shall be thought to dwell too much on 

 Alabama, I shall urge in explanation that 

 the opportunities for the study of these 

 formations in Alabama are, perhaps, better 

 and more favorable than in the other states. 



