FOSSILS OF THE CLAY 319 



of barnacles at the base of the clay, even extending downward into the 

 basal conglomerate, deserves mention. 



The section shown at the f ossiliferous portion follows : 



Top Feet Inches 



9. Sandy clay loam, grading imperceptibly into member below ..... 3 

 8. Alternating layers one-eighth to 1 inch thick of sub-angular to 

 angular buff sand and drab clay, with small pebbles scattered 



throughout, grading into member below 2 6 



7. Drab clay, rather shai'ply separated from member below 10 



6. Coarse sand and highly decomposed pebbles of schist, witli some 



well rounded cobbles of quartzite up to 4 inches or more 4 



5. Clay grading into member below 2 



4. Coarse argillaceous sand, much of it highly decomposed rock 



fragments, grading into member below 4 



3. Clay, highly f ossiliferous (casts only) at top and base, grading 



into member below 1 



2. Sand, sparingly fossiliferous, apparently grading into member 

 below, though with a single layer of scattered, highly weath- 

 ered, subangular schist and granite cobble near the base 7 



1. Massive blue clay, highly fossiliferous in well marked layers, 

 the shells often preserving the epidermis; occasional leaves 

 found ; base imexposed 34 3 



This section is chosen because of the unusually good development of 

 the clay. Fifty feet to the north or south this thins greatly, giving a 

 troughlike occurrence to the clay. Members 1 and 2 of the section are 

 those of special interest. ' Member 2 seemed of interest because it offered 

 the possibility of recognizing a variation of facies in adaption to the 

 sandy bottom. Nothing of the kind could be found, however. Member 1 

 is most important, for it is highly fossiliferous along certain clearly 

 marked lines. Arthropods are represented by Balanus and the carapace 

 and claws of Cancer (probably the "spider craV^). Several varieties of 

 Gasteropods occur, of which the largest and most striking is Neptunea 

 despecta torrmta; this seems to be found only in the upper fossiliferous 

 liorizon, where it occurs abundantly in a layer just about the thickness of 

 a single shell. Pelecypods are represented most abundantly and in great- 

 est variety. The various fossils found, together with their present ranges, 

 are shown in the following table, prepared largely by Professor Berry : 



Astarte elUptica Cape Cod northward. 



Astarte striata Cape Cod northward. 



Asterias sp 



Balanus crenatus Arctic to Long Island. 



Buccinum coerulea 



Buccinum cf . yrienlandicwm 



