On the New Jersey Marls. 21 



The mineral, which forms the subject of the preceding 

 analysis, was generally believed to be Marly and has been 

 advantageously employed in some situations as a manure. 

 The above results evidently prove that its true nature was 

 not known, and that it must be associated with the green 

 earths of Verona and Cyprus. 



K 



