DETAILS. 



G3 



" The high land between Brandon and Rochester is covered with bowlders, some on the east slope quite 

 large. Ten miles farther north we have in Ripton and Hancock interesting examples of what we regard as 

 moraines of ancient glaciers. But these will be described in another place. 



" Bowlders are not numerous in the valley of Larnoille River, except in East Georgia. Going east 

 from St. Albans village we find them abundant. They are not infrequent over nearly the whole of Frank- 

 lin county, and we find them scattered through the valley east of Jay Peak. Towards the south end of the 

 valley south of Lowell we find modified drift, becoming coarser as we approach the gorge on the road to 

 Eden. South of the gorge the bowlders are not numerous. Whether these facts can be explained on the 

 supposition that the current that wore out this gorge came from the north, may be doubted. 



" In the vicinity of Lake Memphremagog, bowlders at least five feet in diameter are strewed over the 

 towns in Vermont, that lie south of the lake the bowlders having come from Owl's Head and other places 

 in Canada, and containing fossils. A bowlder some ten feet through, of a coarse breccia, may be seen on 

 the Derby road in Brownington some two miles north of the Centre. Its home was in Canada. 



" Along Lake Champlain bowlders are less abundant, especially where clay occurs, though they are some- 

 times mixed with the clay, as in West Charlotte. They are mostly from hypozoic rocks from New York 

 and Canada, from pebbles to three and four feet in diameter as along the shores of Georgia and Milton. 

 South of Burlington the shore is rather free from bowlders. 



" The bowlders on the islands in the lake where they occur, are of a similar character, as the following 

 list will show. 



Rock Dunder : Bowlders, hypozoic rocks, and Winooski marble. 

 Juniper Island : Hypozoic rocks, three feet diameter. 



Hogback, (Mostly pebbles. 



Valcour, ) 



North Hero, > Generally small. 



Grand Isle, ) 



East side of Grand Isle, 1 



e J' ! From pebbles to 3 and 4 feet ; hypozoic rocks and 



barage, Winooski limestone : Hypersthene abundant. 



Potter's, 



S'( H - *><*- 



Kent's : Rocks in place ; Utica Slate. 

 Diadama Island : Sandy. 



On the cast shore of Isle La Motte are bowlders of hypozoic and metamorphic rocks. 



In the north part of the town of Grand Isle are some large angular blocks (20 by 15 by 3 feet) of reddish 

 encrinal limestone, which came from Isle La Motte, and are worn by water so as to have cavities of sup- 

 posed horse tracks and boy's tracks. 



" The fragments of slate along Lake Champlain, in some instances are FlG - 25 - 



curiously arranged. Where washed by the water along the beach you will see 

 the slate radiating from the surface of bowlders, and sometimes without such 

 a nucleus, as if so placed by man. The figure (Fig. 25) will give an idea of 

 this arrangement. It is chiefly north of Burlington that it has been observed 

 among the Hudson River and Utica slates. The most striking locality is in 

 the southwest part of North Hero, near a fine locality of Graptolites, where this 

 phenomenon is sometimes seen as perfect as in the figure. 



" We arc not aware that the facts noticed in the last paragraph have ever been 

 described by geologists, although they certainly deserve attention. But until we 



