222 



SCIENCE. 



[N. S. Vol. XXI. No. 528. 



tionships of lower Devonie strata in the 

 eastern United States. Chai'ts were used 

 in showing the long narrow Cumberland 

 sea as this body of water is called. Mr. 

 C. A. Ilartnagel then, in some notes on the 

 Ontaric (Siluric) section of eastern New 

 York, traced the comparative sections to 

 the west and to the east of the Helderberg 

 INIountains and showed the continuous char- 

 acter of the Cobleskill beds. On the east 

 the formation immediately beneath this is, 

 probably, Salina in age, down to and 

 through the Shawangunk conglomerate as 

 the basal member of the Salina group. 



The age of the Morrison formation of 

 the Rocky ^Mountain region was the theme 

 discussed by Mr. N. H. Darton, who has 

 carried on extensive field Avork along the 

 outcrops. It has been found that the 

 iMorrison formation is of wide extent in the 

 Rocky ]\Iountain region, from Montana to 

 New Mexico, but evidence as to its age is 

 meager. Abundant mammalian remains 

 occur, but the paleontologists do not agree 

 as to the horizon, some investigators re- 

 garding them as Jurassic and others as late 

 Cretaceous. The meager fresh-water mol- 

 lusean fauna is not definitive. Some time 

 ago, Mr. AVillis T. Lee found evidence that 

 Morrison shales give place to Comanche de- 

 posits in western Oklahoma, and the author 

 has found similar relations in the Two 

 Butte uplift in southeastern Colorado, and 

 concludes that the Morrison strata are of 

 Comanche (Lower Cretaceous) and that 

 sandstones occur representing both the 

 Lakota and the Dakota sandstones of the 

 Black Hills region. 



In a paper on the classification of the 

 Upper Cretaceous formations of New 

 Jersey, Professor Stuart Weller, of Chi- 

 cago University, reviewed the schemes pro- 

 posed by the state survey at various times, 

 and, by means of fossils, substantiated the 

 subdivision which had been made by Knapp 

 and Kiimmcl on lithologie grounds alone. 



Professor AVeller then went on to discuss 

 in detail in a second paper the fauna of the 

 Clift'wood, N. J., clays, which form the 

 most notable example of marine sedimenta- 

 tion in New Jersey during Raritan time. 



The fossils of Cook's Inlet and the 

 Alaska peninsula have been made the sub- 

 ject of careful study by Messrs. T. W. 

 Stanton and G. C. Martin, of the United 

 States Geological Survey. The section 

 shows a great thickness of beds which are 

 well provided with fossils. The beds seem 

 to be closely related to the Jurassic strata 

 of Russia. The scientific program was 

 closed by Professor G. H. Perkins, of Ver- 

 mont University, with a paper on the Ter- 

 tiary lignite of Brandon, Vermont, and its 

 fossil fruits. These historic beds were 

 worked for fuel during the anthracite coal 

 strike and as a result many specimens of 

 fossil fruits were found, most of which are 

 described now for the first time. 



The following papers were read by title 

 only : ' Occurrence of Gem Minerals in San 

 Diego, Riverside and San Bernardino 

 Counties, Cal., ' by George F. Kunz; 'Rocks 

 from Mt. Desert Island, Maine,' by Persi- 

 for Frazer; 'Plumose Diabase and Pala- 

 gonite from the Holyoke Trap Sheet,' by 



B. K. Emerson; 'Determination of Brucite 

 as a Rock Constituent,' by Alexis A. Ju- 

 lien; 'Origin of Leached Phosphate,' by 



C. H. Hitchcock; 'Serpentine Deposits of 

 Belvidere Mountain, Vermont,' by V. F. 

 Marsters ; ' The Shifting of the Continental 

 Divide at Butte, Montana,' by Walter H. 

 Weed ; ' Nantucket Shorelines, III. Muske- 

 get, ' by F. P. Gulliver ; ' The Dexter, Kan- 

 sas, Nitrogen Gas Well,' by Erasmus Ha- 

 worth ; ' Relation of Lake Whittlesey to the 

 Arkona Beaches,' by Frank B. Taylor; 

 'New Geological Formation in the Eo- 

 Devonian of Annapolis County, Nova Sco- 

 tia,' by II. M. Ami; 'Age of the Marine 

 Limestones of West Bay, near Parrsbor- 

 ough, Cumberland County, Nova Scotia,' 



