710 NEW YORK STATE MUSEUM 



Charles Yaughn's yard is similar to the preceding, and is at the 

 south end of the town. The clay is 10 feet thick. 



Gilliland & Day's yard is situated on Indian bay, 6 miles south 

 of Plattsburg. The bricks are also molded by hand power. 



All these yards sell most of their brick at Plattsburg. 



The following is an analysis of the clay at J. Ouimet's brick 

 yard. 



Silica 65 . 14 



Alumina 13 . 38 



Peroxid of iron ....'. > 7.65 



Lime 2.18 



Magnesia • 2.36 



Alkalis 8 . 51 



99.22 



Oswego^ Jefferson and St Lawrence co. yards 



Gouverneur, St Lawrence co. The brick yard of G. P. Thomp- 

 son is situated east of the village and on the eastern bank of the 

 Oswegatchie river. The clay bank rises to a hight of 10 feet 

 above the river and the section exposed is : 



Sand 4 feet 



Gray clay 8 " 



Blue... 6 " 



18 " 



A Martin soft mud brick machine is used and the bricks are 

 dried under sheds. The product finds a read,y sale in the local 

 market. 



A pallet yard has recently been started at this locality. 



Carthage, Jefferson co. Wrape & Peck. The brick yard and 

 clay pit are situated in the Black river valley near the to^vn of 



