692 NEAV YORK STATE MUSEUM 



places by a moderatelj fine sand and gravel, cross-bedded in places. 

 The clay varies from 6 to 50 feet in thickness. It extends in places 

 to an altitude of 90 feet, as at McConnell & O'Brien's bank, 

 while at others, as McGuire's bank, it only reaches a hight of 6 

 feet above mean tide. At the latter place the clay is overlain by 10 

 feet of sand and coarse gravel and has been excavated to 10 feet 

 below mean tide. 



A partial analysis of the buff clay from ]V[cConnell &' O'Brien's 

 clay bank at Yerplanck is given below. 



Silica 50.92 



Alumina 26 . 8Y^ 



Peroxid of iron 4.90 



Lime 2.52 



Magnesia 1.56 



I 



King & Lynch's yard is situated on George point near Mon- 

 trose. The bank is about TOO feet distant, and the clay is hauled 

 in cars drawn by horses. At most of the yards the haulage is 

 doWn grade. Fisher's clay bank at Crugers is overlain by 2 feet 

 of loam. This is used to supply part of the tempering material 

 and the rest is obtained from Jonespoint. At the yards on Yer- 

 planck point horse power is chiefly used to operate the machinery. 

 Most of the yards at this locality obtain their clay from the pits of 

 the Hudson river brick co. This clay bank is worked in benches. 

 The haulage distance is about one half a mile. It is done either 

 in carts or in cars run on tracks and drawn by horses. 



Along the New York Central railroad a short distance south of 

 Montrose station are the yards of C. Hyatt and J. Morton. Mr 

 Morton also has a covered yard on Yerplanck point where front 

 brick are made. Their banks are practically a continuation of 

 each other. The clay is both blue and yellow and is overlain by 

 several feet of coarse sand. Hyatt uses steam power and Morton 



1 Alumina is probably too high. — H. Ries 



