CHEMICAL PROPERTIES OF CLAY. 77 



platinum dish. The results obtained on a number of samples 

 were as follows : 



Soluble salts in Clay Marl I. 



Loc. 1 Lab. A T o. 2 Per cent. 



131 614 0.60 



142 624 1.49 



192 602 0.60 



228 601 0.60 



Soluble salts in Clay Marl I and II. 



Loc. Lab. No. Per cent. 



149 647 0.51 



194 609 0.81 



128 : 6lO O.08 



Soluble salts in Clay Marl II. 



Loc. Lab. No. Per cent. 

 231 607 0.08 



Soluble salts in Cohanscy clays. 



Loc. Lab. No. Per cent. 



185 683 0.20 



185 682 0.29 



191 619 0.45 



Soluble salts in Allozvay clays. 



Loc. Lab. No. Per cent. 



162 617 0.08 



164 680 0.38 



Soluble salts in Raritan clays. 



Loc. Lab. No. Per cent. 



131 614 0.00 



6 7 0.17 



54 28 0.33 



84 34 0.06 



6 9 0.00 



24 4 0.00 



1 These numbers as used here and elsewhere in this Report refer to locali- 

 ties as indicated upon the maps, Plates X, XI, XII, XIII. 



2 These numbers wherever used refer to numbers of the test, on file in Dr. 

 Ries' laboratory. 



