i6 PROCEEDINGS S. 1. ASs'n ARTS AND SCIENCES. [VoL-. I 



lengthwise, just inside the staples with which the pages are secured. 

 While the volume will of course not lie open, it can nevertheless Le 

 easily consulted without untying the string. This method has been 

 followed by Mr. Louis H. Joiitel for several years,^ and I have a\s6> 

 'found iimo&t practical and convenient. 



Dr. Arthur Hollick exhibited specimens of Triassic sandstone and 

 read the following pap'er: 



A Newly Discovered Olftcrop of Triassic Rock on Staten 



Island. 



During the prosecution of recent investigatiofis on the geology o£ 

 the Island in the vicinity of Kreischerville I accidentally discovered a 

 hitherto unreported outcrop of Triassic rock, on the east side of Sana 

 Lane, near Bogardus' Corners. The outcrop is well defined, and I as- 

 certained by inquiry that it had been worked as a quarry by the Krei- 

 schers some years ago, in order to obtain material for mixing with fire 

 clay in the manufacture of mottled brick for ornamental building 

 purposes. I was informed that about one hundred tons of the rock 

 had been taken from this outcrop. 



The rock is red shaly sandstone, thinly bedde'd, and presenting evi- 

 dence 6i having been squeezed or crushed , probably by ice action. Its 

 presence at this location, at an elevation of about 140 feet above tide,, 

 is somewhat remarkable; and its discovery was entirely ufiexpected, as 

 it indicates that the topography of the region is not wholly due, as was 

 formerly supposed,- to eroded Cretaceous strata and Drift deposits, but 

 that it is due, at least in part, to "bosses" or ridges of older rock. 



That Triassic rock underlies the Cretaceous clays of Staten Island 

 and New Jersey at lower levels, has long been known, but its occur- 

 rence as an "inlier," surrounded by Cretaceous deposits, was an un- 

 looked-for feature and materially adds to our knowledge of the extent 

 and location of the formation on the Island and the amount of erosioii 

 to which it was subjected before the Cretaceous deposits were laid down. 



Previous visible evidence in regard to the local presence of rocks of 

 Triassic age has been confined to the trap ridge, extending from Port 

 Richmond to Linoleumville, and the adjacent area to the northwest, hi 

 the vicinity Of Mariners' Harbor khd Arlington. The outcrop in this 

 'region was first noted and described in 1843 by Mr. Wrh. W. Mather 

 (Geol. N. Y., Pt. L Geol, ist Geol. Dist., Chap, iv. Upper Secon- 

 dary System, Redsandstone Division, p. 285), where he says: "In 

 Richmond county (Staten island) the red sandstone occupies but ia 



