152 W. B. Dwight — Discovery of fossils in the 



specimens, though not generally well preserved. I obtained 

 four or five good specimens of it about 2f centimeters in diam- 

 eter. Specimens resembling 0. sordida were observed, but 

 I suspect that they are simply distorted forms of 0. complanata, 

 as the gain in the size of the whorls is moderate. 



An Orthoceras was found, conspicuous in its relief upon the 

 weathered surface. It is about five centimeters long, and one 

 and a third wide ; the rate of taper is moderate ; the septa 

 number about seven to a centimeter : they are quite oblique, 

 but this may be due to distortion. The siphuncle is two milli- 

 meters in diameter; the shape of the cross-section, and posi- 

 tion of the siphuncle cannot be known because of the distor- 

 tion, nor can its species be at present determined. Fragments 

 likely to be those of Cyrtoceras Vassarina were also noticed. 



No other limestone outcrops were seen in the vicinity, as the 

 rock is extensively covered by drift in this part of the State, 

 though a more careful search would doubtless reveal other 

 localities. Similar fossils were found in adjoining walls indi- 

 cating a considerable area of the fossiliferous strata. The 

 limestone belt here has a width of about two miles, its eastern 

 edge skirting the base" of Indian Mountain in the Connecticut 

 border. Throughout this width there appears to be a general 

 similarity in the lithological characters so far as these could be 

 observed in the rather scarce outcrops. The strata from the 

 village of North East Center are continuous northerly to 

 Millerton and to the north county line, becoming a white and 

 crystalline friable marble in the quarry of the A. H. Maltby 

 furnace, north of Millerton. The belt was also cursorily ex- 

 amined south as far as Amenia, and found to be of a similar 

 character. 



These facts show that the Calciferous, which is clearly indi- 

 cated by the fossils, is at least one of the most prominent com- 

 ponents of the Millerton-Fishkill limestone belt. Trenton 

 strata are very likely to be present, but were not observed. 

 No indications of Cambrian strata were noticed between Mill- 

 erton and Amenia but the search has not yet been thorough. 

 The shales and schists associated with these limestones, and 

 passing sometimes from argillite, without interruption, into 

 hydro-micaceous schist, hold evidently the same stratigraphic 

 position as the shales and schists which are associated with the 

 similar western limestone belts of the county. It is therefore 

 not easy to see how they can be referred to any other horizon 

 than that of the Hudson River Group. 



It may be well to announce here that the writer has also 

 found, recently, Calciferous fossils in one of the short belts of 

 limestone lying a few miles east of Rhinebeck village. The 

 fossiliferous locality is at Eighmyville three miles northeast of 



