426 PROCEEDINGS OF THE ACADEMY OF [1898. 



which is stated in the text to have an elevation of 30 to 50 feet, ex- 

 tends inland along the courses of the following streams : some 20 

 miles up the Mullica and the Great Egg Harbor Rivers, about 25 

 miles up the Maurice River, and some 10 miles up the Cohansey 

 River. These measurements were made in a direct line from the 

 mouths of the rivers and not by following the winding courses thereof. 

 The surface deposit of this terrace has been named by Prof. R. D. 

 Salisbury the Cape May Formation. He describes it as a 'thin 

 body of loam, sand and gravel of lesser age than any " of the surface 

 formations of the State described in the same paper " except pos- 

 sibly the drift of the last glacial epoch." He further says : "The 

 strict contemporaneity of this formation with the drift of the last 

 glacial epoch is not established, but it is probably at least partly 

 contemporaneous with it, though its later portions may be still 

 younger." 6 To this formation belong the diatom clays noted in the 

 preceding paragraphs as at Bridgeton and Buckshutem. 



Stauroneis Phoenicenteron has never been seen by the writer in 

 any of the numerous specimens of Miocene diatomaceous clays which 

 he has examined during the past ten years, nor has it, so far as he 

 has been able to learn from consultation of the literature relating 

 to it, been recorded by others as occurring in beds of that age. It 

 has, however, a world wide distribution in freshwater deposits of 

 decidedly later age. Ehrenberg, in the Atlas of his Mikrogeologie, 

 notes it in various sands and black, white and gray earths at numer- 

 ous localities (named below) most of which the writer would char- 

 acterize from their position stratigraphically and geographically as 

 decidedly post-miocene and some of them as clearly glacial and 

 post-glacial. Thus Ehrenberg lists this diatom on page 19 of his 

 Atlas as occurring in various earths and at different places, 

 as follows : — in lake mud from Loka, Sweden ; in Bergmehl from 

 Degenfors and Lillhaggsjohn, Sweden, also from Santa Fiora, Italy, 

 and from the south point of Tierra del Fuego, S. A.; in Bliitterkohl 

 from Westerwalde, Prussia; in white earth from Guatemala; in Kiesel- 

 guhr from Andover, Pelham and Wrentham, Massachusetts ; from 

 Ceyssatt, France ; from Down, Mourne Mountains, Ireland ; from 

 New Hampshire and from Earlton, Nova Scotia ; in white marl 

 (Mergee) ; from Farmington, Conn.; in Meteorpapier, from Rauden, 

 Prussia; in tripoli and polishing powder, from Moscow, Russia; 

 and in Weisenpapier, from Freiberg, Saxony. 



Annual Report Geol. Survey of N. J., 1S97, page 



19. 



