REPORT OF THE STATE PALEONTOLOGIST 1902 1003 



1 2 



Alumina 635 1.01 



Ferric oxid 1 . 819 . 55 



Silica 1.842 1.89 



Sulfur dioxid 145 .049 



Phosphorus 149 .022 



Water 271 



107.685 98.731 



7 PORT EWEN (KINGSTON) BEDS 



In his sections of the region about Kingston and Rondout 

 Davis 1 described a series of shaly limestones, lying above the 

 Becraft limestone, and similar in character and fossil content 

 to the Shaly limestones (New Scotland beds) underlying the 

 Becraft. To these upper beds Davis gave the name of Upper 

 Shaly limestone which was later on changed to Kingston beds 

 by Clarke & Schuchert. 2 This term was, however, preoccupied 

 by various authors for formations of Preeambric, of Siluric and 

 of Pleistocenic age, and Clarke has since proposed the name Port 

 Ewen beds, from the town opposite Rondout, near which these 

 beds are best exposed. 



The thickness of these beds near Port Ewen station on the 

 West Shore Railroad is recorded as 222 feet. Van Ingen and 

 Ruedemann divided them into 18 subdivisions and made exten- 

 sive collections from these, which have been published by Clarke. 3 

 On the authority of these collections, Clarke states that " the 

 fossils of all its layers are those of the true New Scotland lime- 

 stone faunas, the contents of the higher layers varying little 

 from those of the lower." As no such formation seemed to occur 

 at Becraft mountain, where the normal succession of strata is 

 undisturbed and clearly exposed, I visited Rondout hill in com- 

 pany with Dr John C. Smock, in order to study the formation at 

 the type locality. Accompanied by Mr P. E. Clark, the mining 

 engineer of the cement works, I made a careful examination of 

 critical points on the hill, expecting to find the lower Shaly beds 



1 Am. Jour. Sci. 1883. 26 : 389. 



'Science. Dec. 15, 1899. 



8 Oriskany Fauna of Becraft mountain, p. 73. 



