446 R. 2L Brown — Clays of the Boston Basin. 



Figure 1. — Clielsea Street, between Chelsea and Everett, Mass. A. =Clay, 

 B. = Talus, C. — Eock, D. = Till. Dotted lines in clay represent sand. 



Figure- 2. — Clielsea Street, between Chelsea and Everett, Mass. A. — Sand, 

 B. = Clay, C. = Till. Dotted lines in clay represent sand. 











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Figure 3. — Chelsea Street, between Chelsea and Everett, Mass. A. = Clay, 

 B. = Sand, C. = Till. Dotted lines in clay represent interstratified sand. 



