?^AR 15 IfiSB PROCEEDINGS / 



AMERICAN PHILOSOPHICAL SOCIETY 



HELD AT PniLADELPHL^ FOR PROMOTING USEFUL RNOWlEDfiB. 



Vol. XXXYI. December, 1897. No. 156. 



CONTENTS. 



PAGE 



Stated Meeting, September S, 1897 325 



A Geological Reconnaissance of the Coal Fields of the In- 

 dian Territoiy (with maps and illustrations). By Noah 



Fields Drake 326 



Stated 3Ieeting, SejJtev^ber 17, 1897 420 



The Span of Life. By Robert P. Field 420 



The Survival of the Medii^val Art of Illuminative Writing 

 among Pennsylvania Germans (illustrated). By Henry 



C. Mercer , 424 



Stated Meeting^ October i, 1897 433 



Special Meeting, October 11, 1897 434 



The Variation of Terrestrial Latitude. B}^ C. L. Doolittle 434 

 The Measurement of Thought as Function. By Daniel G. 



Brinton, M.D . 438 



Stated Meeting, October 15, 1897. 440 



Sjjecial Meeting, October 29, 1897 442 



Some Results of the Norwegian Polar Expedition, 1893-96. 



By Dr. Fridtjof Nansen 442 



Remarks on Polar Expedition. By Commodore George W. 



Melville 454 



Remarks on Polar Expedition. Bj- Prof. Angelo Heilprin 461 



Stated Meeting, November 5, 1897 464 



Adjourned Stated Meeting, November 10, 1897 465 



Adjourned Stated Electing, November 17, 1897 465 



Stated Meeting, November 19, 1897 465 



Rock Carvings and Paintings of the Australian Aborigines 



(with plate). By R. H. Mathews, L.S 466 



Stated Meeting, December 3, 1897 478 



The Passamaquoddy Wampum Records. B}' J. Dyneley 



Prince, Ph.D 479 



The Ethnic Affinities of the Guetares of Costa Rica. By 



Daniel G. Brinton, M D 496 



Stated Meeting, December 17, 1897 499 



philadelphia : 



The American Philosophical Society, 



104 South Fifth Street, 



1898. 



