IteCEUBEB 25, 1908] 



SCIENCE 



933 



The American Folk-lore Bodety. — ^Week of De- 

 cember 28. President, Professor Roland B. Dixon, 

 Harvard UniTersity; secretary. Dr. Alfred M. 

 Tozzer, Harvard University, Cambridge, Mass. 



The American Psychological Association: — De- 

 cember 29-31. President, Professor G. M. Strat- 

 ton, University of California; secretary. Professor 

 A. H. Pierce, Smith College, Northampton, Mass. 



The American Philosophical Assooiation, — De- 

 cember 29-31. President, Professor Hugo Mllnster- 

 berg, Harvard University; secretary. Professor 

 Frank Thilly, Cornell University, Ithaca, N. Y. 



Southern Society for Philosophy and Psychol- 

 ogy. — Convocation week. President, Professor J. 

 MacBride Sterrett, The George Washington Uni- 

 versity; secretary. Professor Edward Franklin 

 Buchner, The Johns Hopkins University, Balti- 

 more, Md. 



SOCIETIES AND ACADEMIES 



THE GEOLOGICAL SOCIETY OF WASHINGTON 



At the 208th meeting of the society, held at 

 the Cosmos Club, on Wednesday evening, October 

 28, 1908, under informal communications, Mr. J. 

 S. Diller discussed briefly wind-blown grains of 

 quartz in limestone. 



Regular Program 

 Oeologio Studies in Southwestern Alaska: Mr. 



Wallace W. Atwood. 



The island of Unga, a portion of the Alaskan 

 Peninsula north of Unga in the vicinity of Balboa 

 and Herendeen bays and a district in the vicinity 

 of Chignik Bay were visited during the past sum- 

 mer with a view to determining the stratigraphy 

 of the coal-bearing horizon. The island of Unga 

 was found to consist chiefly of igneous rocks. On 

 the north end of the island there are some lignite- 

 bearing beds that immediately underlie Miocene 

 sediments. The lignite-bearing beds have been de- 

 termined on the basis of plant remains to belong 

 to the Kenai horizon. Small patches of Miocene 

 were found at various localities on Unga, Popof 

 and the mainland. 



In the Balboa-Herendeen Bay district a thick- 

 ness of over 5,000 feet of sediments was found 

 from which Eocene shells and Kenai plants were 

 secured. The beds which yielded the marine shells 

 were interstratified with the leaf-bearing beds in 

 a conformable series. This great series of Eocene 

 beds was traced eastward through the central 

 portion of the peninsula to Chichagof Cove, where 

 Dr. Palache secured marine Eocene shells. The 

 age of the Kenai leaves has been a confusing 



problem in Alaska and the association of these 

 leaves with marine shells is very gratifying. The 

 Eocene belt has been folded and faulted and large 

 masses of granitic rock have been intruded into 

 it. These intrusions are in the forms of dikes, 

 sills and laccoliths. North of the Eocene belt 

 formations of Upper Jurassic, Lower and Upper 

 Cretaceous were found. The Herendeen Bay coal 

 field is located in the Cretaceous area and the 

 coal is of Upper Cretaceous age. The structural 

 relationship between the Upper Jurassic and 

 Lower Cretaceous is that of conformity. Between 

 the Lower Cretaceous and the Upper Cretaceous 

 there is a faunal break, but no structural break 

 was found at that horizon. Between the Upper 

 Cretaceous and Eocene beds there does not appear 

 to be any structural break but the faunal material 

 received is not complete. Near the close of the 

 Eocene times there were igneous intrusions, vol- 

 canic outbreaks and deformation. Miocene beds 

 rest, at most places, uneonformably upon under- 

 lying formations, although on the north end of 

 Unga Island sedimentation was continuous from 

 the Eocene on into the Miocene times. 



Since the Miocene beds were deposited there has 

 been further deformation and vulcanism in the 

 region and volcanic activity has continued up to 

 the present time. 



The work in the Chignik district consisted 

 chiefly in an examination of the coal field. The 

 faunal material from that area has not yet been 

 examined, but it is expected that the same hori- 

 zons that were found in the Herendeen Bay dis- 

 trict are represented in the Chignik area. Fossil 

 shells and plants are there closely associated and 

 it is expected that further light on the Kenai 

 problem will be afiforded by the collections secured 

 from that place. 



Neu) Occurrence of Willemite and Anhydrite- 

 Mr. W. LiNDGEEN. 



Anhydrite occurs in the Cactus mine at New- 

 house, southern Utah. The mineral accompanies 

 the chalcopyrite of that copper mine as a primary 

 gangue mineral and is associated with tourmaline 

 and a small amount of calcite and siderite. The 

 hydration of the anhydrite results, of course, in 

 the formation of gypsum, which mineral is abun- 

 dantly found throughout the mine. 



Willemite as a commercially important min- 

 eral of zinc ores is mined at Tres Hermanas in 

 southern New Mexico. The mineral forms dense 

 masses consisting of slender hexagonal prisms, 

 and is associated with calcite, a little smithsonite, 

 and calamine, as well as hydro-zincite. The occur- 



