TEENTON LIMESTONE. 287 



south) the characteristic schists of this rock appears, as they also do in the east part of 

 the town, with the characteristic Chsetetes. The latter locality was shown us by Rev. 

 Augustus Wing. Next it appears at several places in Addison, west of Snake Mountain, 

 with its fossils. It next sweeps eastwardly around the northwest corner of Snake 

 Mountain into Waltham. In the north part of Waltham it appears with it fossils and 

 undulatory dip near S. Burrough's house. East of Vcrgennes it is also seen; as in 

 Ferrisburgh, at two or three places on the principal road between Vergennes and 

 Burlington. It is now trending towards the lake, which it reaches at McNeil's Point in 

 Charlotte. One or two of the islands south of the point are composed of this limestone 

 as well as Great Bluff Point. There are many good fossils at McNeil's Point, for many 

 of which we are under obligations to Mr. McNeil. We learned by experience that some 

 of his neighbors prized these relics as well as himself. One of our surveying parties 

 came up the lake in a skiff, and landing north of the dock, commenced to examine the 

 rocks. A beautiful coral arrested their attention, and mindful of the interests of the 

 State Cabinet, began to pick about it with appropriate tools. It yielded to their labors ; 

 but just as they were extracting it from its firm socket, a gruff voice arrested us. "Here, 

 let that are thing alone, its one of the most curest things on my farm, and I ain't a goin' 

 to have it carried off !" Of course they relented, and apologized for having trespassed 

 though unwittingly for they knew of no statute forbidding members of the Geological 

 Survey to collect specimens of rocks or fossils, within the precincts of the State. They 

 departed, leaving the coral, which can probably be seen by visitors to this day, only 

 provided that the water has not washed it away, for it was loosened so much that a 

 slight force would easily tear it up. They were glad, nevertheless, to find that there 

 was some one that appreciated the value of fossils so much, as to be unwilling to part 

 with them, even for a consideration. 



This range next appears upon Stave Island and Carlton's Prize, from whence it passes 

 under water to Martin's Bay in South Hero. It occupies the middle and northwest parts 

 of the island. It reaches entirely across the island at one place, to Keeler's Bay, but the 

 shape of the island is such that it runs off to the northwest part, when it again sinks 

 beneath the lake to rise again in Isle La Motte. In Grand Isle is the best development 

 of the Trenton that we have seen in Vermont. Prof. Adams in his manuscript notes 

 thinks the thickness of it here is as much as 500 feet. The strata are thick-bedded, upon 

 the shore north of Rockwell's Bay to near Tobias Landing, and are filled with beautifully 

 developed trilobites, orthocerata, shells, fucoids, etc. 



The finest fossils in the Cabinet are from this coast. The best localities on this island 

 are north of Rockwell's Bay, and at Porter's Landing. In fact almost every stratum con- 

 tains beautiful fossils. 



The extent of surface in Isle La Motte covered by Trenton limestone is represented 

 upon Plate VIII, Fig. 3. It occupies the northeast part of the island, and abounds in 

 fossils. It commences at Hill's black marble quarry, and may be seen at the prominent 

 points north, as at Cooper's Point, and at Cemetery Point. A short distance above the 

 black marble, there is a small amount of Utica slate connected with it. According to 

 Prof. Thompson, the Trenton caps the highest parts of this island as well as the north- 

 eastern part. We have been able only to explore the shores. 



