CLAYS OF NEW YOKK 587 



overlie the clay at Lahey's, Brockway's and Dinan & Butler's 

 yards. At J. Y. Meade's yard, a short distance below Low point, 

 the clay is covered by about 3 feet of sand, faintly stratified, 

 and above this 6 to 8 feet of nnstratified material; coarse sand, 

 pebbles and cobblestones, some of them 18 inches in diameter. 

 Most of them are archean rocks, but there are also fragments of 

 shale, limestone, sandstone and a few of them contained Paleozoic 

 fossils. 



About 1000 feet south of Meade's yard is a gravel bank 8 

 to 15 feet thick of material similar to that overlying the clay in 

 Meade's bank. At the base of this embankment in a few spots 

 yellowish clay overlain by stratified sand has been struck. 



The following sections are those of wells bored at Khinebeck. 

 On the land of Eobert Duckley: 



Soil and yellow clay 10 feet 



Blue clay ,. . . 82 " 



Kock 



Total thickness . 92 " 



On T. Reed's property: 



Soil and yellow clay 20 feet 



Quicksand 100 " 



Hardpan 



Total thickness 120 " 



On J. O'Brien's property: 



Clay 20 feet 



Quicksand 25 " 



Hardpan 2 " 



Gravel 



Total thickness 47 " 



