CLAYS AND MARLS. 



35? 



It is an 



Hudson, and exerts an important influence upon the agriculture of these rallies 

 excellent base for agricultural work, and makes a desirable foundation for tillage. 



A reddish brick clay appears on Cayuga lake, and is probably the same clay which 

 exists in Christian-hollow. 



The Adirondack clay is local, and is formed by the decomposition of the hypersthene 

 rock. 



COMPOSITION QF THE CLAYS OF NEW- YORK. 



PLACES A>T> KINDS OF CLAY. 





a I 



58-44 



32-28 



58-24 



20-76 



44-20 



28-72 







65-60 



17-52 



44 "S4 



27-40 



2 S 



i 



Tertiary or Albany clay 



Niagara clay 



Cayuga clay 



Adirondack clay 



Brick clay near Caldwell 



Reddish clay of Christian hollow, t 



8-00'trace.* 



14-62 



16- 18 



0-94 



8-92 

 8-29 



2 • 12 

 0-16 

 0-60 

 0-39 

 1-36 



trace. 



trace, 

 trace. 



trace. 



0-44 

 trace. 



0-11 



2*60 



5 '28 



3-24 

 S-44 

 6-52 

 6-6S 



10-30 



' A preceding analysis give 1-62. f Common in the Wheat district. 



COMPOSITION OF THE NEW-YORK MARLS. 



a i 



- B 



Saratoga county 



Fairmount : near Mr. Geddes', 



Salem : Mr. Crary's farm 



Christian-hollow 



Cayuga bridge* 



21-24 

 81-22 

 75*43 



22-20 



1-24 



1-24 

 0-62 

 8-88 



3-92 



0-51 



0-52 

 3-00 



3-40 



2-42 



0-56 



41-75 



2-32 



7 ■25 



22-24 



I--- 



3-80 



trace 

 0-62 

 19-30 



* Formed by decomposing plaster shako. 



