142 



Report of the State Geologist. 



9. Strqpheodonta, sp. (r) 



I have compared these with -S'. mucronatu, (Con.), H., and 

 8. perplana (Con.), H., without coming to a decision as to their 

 specific character. They seem to be rather too convex for the 

 former and too much variation in the size of the striae for the latter. 



10. Palmmeilo fecimda, Hall. (rr) 



The specimen seems to be nearer to this species than to P. filosa 

 (Con.), Hall. The geatest length is not on the hinge line. 



11. Cyrtiiia Hamiltonciisis, Hall. (rr) 



This locality is, of course, in the Ithaca formation and some distance 

 above its base. 



XXX V A\ Clarke described an interesting section on the western 

 side of Canasawacta creek along the road northwest from Norwich toward 

 Preston. 1 and the writer studied one beginning on the Canasawacta creek in 

 the western part of the. village, and following the road up the steep hill 

 directly west. This hill affords a section of 550 feet, and on account of its 

 close agreement with the one described by Clarke, it is considered suffi- 

 ciently interesting to merit a description. On the bank of Canasawacta creek, 

 immediately below the bridge at the western side of the village, are thin, 

 irregular sandstones and coarse, arenaceous shales. Some clay pebbles are 

 found in the rocks. Fossils are common in some of the layers, as TropidoL j>- 

 tiis ca/rvtiatus (Con.), Hall; Chonetea xcittila, Hall; Spirifer niexastrialix, 

 Hall (?) ; Illi ijucIk >h<11 << sp., and lamellibranchs. This outcrop is sixteen feet 

 below the highway bridge, or approximately 985 feet A. T., and is in the 

 Ithaca formation, though somewhat above its base. The base of the Ithaca 

 formation on the branch of Cold brook, one mile southwest of North Norwich 

 is five and four-tenths miles north of the above locality, with an altitude of 

 1,158 feet A. T., which indicates that the dip between these two places is 

 greater than thirty-two feet to the mile; how much greater is not known, as 

 the base of the Ithaca formation has not been noted in the vicinity of Norwich. 



XXXV - I 2 . This is an old quarry a little beyond the forks in the road 

 and 155 feet above the creek level, in which forty feet of rocks are exposed, 

 consisting of blue sandstones alternating with shales, some of the layers con- 

 taining clay pebbles. The sandstones are of irregular thickness, some of them 

 about two feet thick but generally much thinner. Fossils in general are not 

 numerous though some layers are composed largely of a few species forming 

 what might be called a firestone. The most abundant fossils are : Paractjcla* 



1 Thirteenth Atnmul Iteport Slate Geologist [New York], pp. 534-539. with i-eclion on p. 538. 



