VNITED STATES, 



deposition vast strata, which underlay great ti^cts ©f 

 level country* Thus the flat, between the Basaltic 

 - ' rocks and Stony point at Haverstraw, appears to be 

 wholly underlaid by argillaceous strata. Much of 

 the level country between Red Hook, and Green- 

 bush, is evidently bottomed on a stratum of clay. 

 The tract between Albany and Schenectady, has a 

 stiff and thick layer of clay beneath. The same 

 remark applies to the space lying for some miles 

 beyond the Mohawk river, toward Ball-town 

 springs ; and to the great collection of similar earthy 

 matter, lying westward along the flat country, be- 

 tween the upper falls and fort Stanwix. It w^ould 

 be easy to give other instances of extensive argilla- 

 ceous alluvia. 



In several spots along the shores of the Hudson and 

 the Mohawk, the ferruginous sand which may be 

 collected in considerable quantities, affords evidence 

 enough of the abrasion of iron from the places 

 where iron ore abounds. Bogore (ferrum tubalcane) 

 has evidently been deposited where it now abounds^, 

 by the operation of similar causes, rather than frem. 

 the decomposition of organic matter/ 



^ Dr. Hitc>iel!. 



