1 882. 33 Trans. N. Y. Ac. Set. 



the vicinity of New Egypt, Ocean County, a distance of thirty miles, 

 there are no outcrops of the Upper Marl Bed. When it reappears at 

 the last mentioned place, the laj^ers referred to the Eocene are absent, 

 and they do not again appear further towards the west. 



The fossils, CrassaicUa Delawarensis, Gabb, and Niideolites crucifer, 

 Mort., are more abundant at New Egypt than in eastern Monmouth 

 County. Here occurs also another unnamed bivalve, in the green marl 

 layer, which has not been noticed about Farmingdale, etc. This green 

 layer is dug at Poke Hill and Vincentown, Burlington County, and con- 

 tains the shells of a small Gryphcea, apparently G. vesicularts, Cuv., 

 in a dwarfed condition, about one and a half inches across. 



DISCUSSION. 



Mr. G. F. KUNZ remarked that he had observed abundant creta- 

 ceous fossils at Ruby's, including a piece of amber of the dimensions 

 of I by 6 by 20 inches : also, at Mullica Hill, dufreynite, vivianite, 

 etc., in abundance, the latter sometimes in crystals one inch in length. 



Dr. Brixton stated that vivianite occurred in great abundance in the 

 sands of the lower marl-bed, entirely replacing many of the shells ; also 

 at the well-known locality, still unexhausted, at Mullica Hill, in radiated 

 forms and often occupying the casts of belemnitella; at Colson's Pits, 

 on the drift ; in clays on the Delaware River, at Fishhouse Sta- 

 tion, etc. 



A paper was then read by Dr. J. S. Newberry, 



ON THE ORIGIN OF CRYSTALLINE IRON ORES. 

 (Abstract.) 



At a recent meeting of the Acadeiny, Dr. Julien read an interesting 

 and instructive paper on the origin of crystalline iron ores, in which he 

 attempted to show that they are the product of mechanical rather than 

 chemical agencies. 



In bringing this subject again before the Academy, it is not my pur- 

 pose to attempt to refute, but rather to suppleinent and limit, the theory 

 of Dr. Julien. 



I will not deny that some of the beds of magnetic iron ore, described 

 by Dr. Julien, in the Alleghany belt, have been formed by the sorting 

 power of shore waves, and that he has made an important contribution 

 to the literature of iron, by his careful study and description of these 

 beds ; but that such cases, if they exist, are exceptional, and do not 

 affect the truth and validity of the organico-chemical theory, I shall en- 

 deavor to prove by a brief report of some facts which have come under 

 my observation. 



