2 74 MONROE AND TELLER 



Finely preserved shells of Spirifer euryteines Owen, S. asper 

 Hall, and Atrypa reticularis L., the latter with coarse plications, 

 are found in the "soapstone" and in the upper layers at the 

 quarry. Other portions of the "soapstone" are almost, or 

 wholly, devoid of fossils, and in this they resemble some of the 

 softer layers near the bottom of the quarry. 



In the mass dumped on the beach were found some large 

 stones, having the appearance of bowlders, composed of hard 

 rock similar in color to the harder cement rock, but traversed 

 by very hard white seams of a siliceous character. These seams 

 are full of fossils, most of which are also found at the quarry. 

 Such are Chonetes scitulus Hall, of the gibbous variety, Spirifer 

 subvaricosus H. & Wh., Palaconeilo fecunda Hall, and many others. 

 Associated with these, however, are a number of gastropods, 

 which give a distinctive character to the fauna of these seams ; 

 gastropods, with the exception of Platyceras, being very rare at 

 the quarry. Among the gastropods of the white seams are 

 Bellerophon near pelops Hall, and species of Pleurotomaria, 

 Cyclonema and Loxonema. 



The black shale, mentioned above as the first rock formation 

 penetrated by the intake shaft, is quite distinct from the 

 other materials dumped on the beach. Pieces of it exhibit 

 glacial scratches. Its only fossils are two or three species of 

 Lingida. Certain layers are firm and smooth-grained ; others 

 are extremely fissile, splitting into thin, rough laminae. There 

 is also a greenish shale, whose exact place in the series is not 

 ascertainable, also carrying species of Lingula. These shales 

 are not found anywhere else in place in the state, though small 

 rounded pieces are not uncommon in the drift. They seem to have 

 given way everywhere else under the erosive action of the glaciers. 



The rock at the cement quarry on the river comprises two 

 main subdivisions distinguished, to some extent, by differences 

 in their fossils, but still more noticeably by the different states 

 of preservation in which their fossils are found. The lower 

 subdivision is twenty-one feet in thickness. Fossils are abun- 

 dant in this division, but principally in the form of casts and 



