(i eulogy of Long Island. 303 



Grossman's and Jones's brick-yards, and extend throughout 

 Lloyds' Neck. Between Huntington and Cold Spring a large 

 deposit of white pottery-clay has been worked for many years. 

 The brick-clay extends east over ten miles, and is worked at 

 Eckerson's yard on East Neck, and Provost's at Fresh Ponds. 

 At Eckerson's and at Sammis's pits on Little Neck, are immense 

 deposits of fire-sand which extend over Eaton's and Lloyd's Necks. 

 A little west of Greenport are two brick-yards at which a bed 

 of glacial clay is being worked. Between these two yards is a bed 

 of mottled blue clay used for making flower pots. The most ex- 

 tensive deposit of all, however, is that on Gardiner's Island. This 

 clay is unsurpassed for the manufacture of bricks, and from the 

 abundant supply of moulding-sand and the easy accessibility of 

 the locality by water, must in time prove an important source 

 of revenue. 



DESCRIPTION OF PLATE XXVII. 

 Fig. 1. Scale 1 inch=60 feet. 

 Section at Carpenter's clay-pits. Glen Cove, looking east. 



a. Glacial drift. 



b. Yellow sand. 



c. Friable quartz gravel and sand. 



d. Fire-clay. 



Fig. 2. Scale 1 inch=60 feet. 

 Section at Crossman's brick-yard, Huntington, looking north. 



a. Glacial drift, 



b. Quartz gravel, stratified. 



c. Sandy clay or " loam," — upper half yellow, lower half blue. 

 cf. Diatomaceous earth mixed with clay. 



e. Yellow sand, stratified. 

 /. Red laminated clay. 



g. Brown laminated clay. 



Fig. 3. Scale 1 inch=30 feet. 

 Section at Fulmer's brick-yard, Greenport, looking north. 



a. a. Reddish glacial clay, with fragments of mica schist. 



b. Red clay. 



c. Micaceous sand, laminated. 



