286 BOARD OF AGRICULTURE. 



kany group. This is near the north' line of No. 1, R. 5. The 

 rocks in this township are generally concealed by drift. 



It will be recollected that this formation was fully described last 

 year, so far as it was possible, and we need not repeat those re- 

 marks here. It was stated that the fossiliferous boulders so com- 

 mon in the fields in southern Maine, were principally derived from 

 this rock, and that it belonged to the very oldest of the Devonian 

 roclvs. Parlin pond was also represented as the best locality for 

 the Oriskany fossils, which we shall speak of presently. 



On Johnson's mountain appears a very tough sandstone. On 

 a spur of Bald mountain, still further west, a slaty rock crops out 

 dipping 50° N. W. Both these mountains are in No. 2, R. 6, and 

 are parts of extensive ranges, of which not the remotest idea is 

 given upon any map of the State or County yet published. Our 

 maps are deficient in respect to the topography of our mountains. 

 Near the west end of Parlin pond we obtained specimens of a trilo- 

 bite, the Dalmaniles, we suppose of the same species with the one 

 found last year at Stair Falls on the east branch of the Penobscot, 

 and which we hope will be described and named in the last part of 

 our Report. 



The best locality of fossils in this region known to us, is on a 

 knoll west of the Parlin Pond Hotel. But the fossils there are 

 not in a ledge : they lie in the soil, as if quite near the parent 

 ledge. A little digging did not reveal the ledge, however. We 

 followed out the letter of Jackson's description of the locality 

 where he obtained so many specimens, and could find nothing that 

 would correspond with his description of the abundance of the 

 specimens, so well as this. We collected a large number of fossils, 

 both here and at every other available source, and shall hope to 

 speak more fully of them hereafter. The fossils previously col- 

 lected here belonged to the following genera ; S/rophomena, Cho- 

 netes, Orlhis, Rhynchonella, Ben^tsekeria, LeplocccUa, Spin/era, Mo- 

 diolopais, Cyrlodonta, Avicula, Marchisonia, Plafyosloma and Orlho- 

 ceras: and the following species have been already identified; 

 Strophomena magnifica, Orlhis niusculosa, lihynchoneJla ohlala, 

 Ilensselceria ovoides, Leplocoelia fiabelUies, Spirifera arrecla, and S. 

 pyxidata. 



On a tributary of Parlin stream in the north part of the township 

 of Parlin Pond, a few fossils were obtained from thick bedded, fine 

 grained, dark colored sandstones of this formation, dipping from 



