Dale.] 190 [January 3, 



Taggart's Ferry running parallel with the shore. Professor 

 Shaler 1 also observes: "At one point, Wood's Castle, on the 

 eastern shore of the Island, the conglomerate is immediately 

 overlaid by carbonaceous shale with faint traces of coal plants ; 

 above the coal comes a greenish shale of unknown thickness." 



My observations follow . In passing from the northern end of 

 Smith's Beach along the shore to Sandy Pt. (plate 1), close to the 

 beach, conglomerate like that of Purgatory and Paradise forming 

 a high bluff which extends to Taggart's Ferry, no dip is determin- 

 able before Wood's Castle, a projecting tongue of rock 150' by 50'- 

 120', where about 100' of carbonaceous schists and slate lie upon 

 the conglomerate dipping 55°-60° E.SE. and striking N. 30 E. 

 The schist in contact with the conglomerate is ferruginous. These 

 layers are followed easterly by about 50' of light colored grit. No 

 dip determinable until Taggart's Ferry where the shore recedes 

 westward and conglomerates alternating with carbonaceous and 

 argillaceous schists and grits dip 40° W.NW. The bluff between 

 this and Wood's Castle is therefore a sharp anticlinal. No out- 

 crops of these schists observed west of the landing. They con- 

 tinue to 23, south of the Portsmouth boundary stone, dipping 

 there 80° W.NW., and striking N. 30 E. The conglomerate 

 follows without determinable dip forming high bluffs ; at 21 and 

 22 it seems to dip S.SE. with fissures W.NW. South of Black 

 Pt. about 50' of gritty schists intervene dipping 25°-30° SE. or 

 S.SE. From Black Pt. the conglomerate extends westward 

 about 150', with same dip and strike, exposing the narrow ends 

 of its pebbles to the north and much disintegrated. At 20 fine 

 conglomerates and coarse grits measuring about 75' dip 25° S.SE. 

 and continue to 19 becoming finer in character with the same 

 dip, strike and W.NW. joints. No further exposures until 17. 

 At 18 bluish diluvial clay. At 17 reddish argillaceous schists dip 

 30° S.SE. ; at 16 dark gray argillaceous schists 20°-25° S.SE. ; 

 at 15 similar layers dip 15°-20° E.SE. No further exposures 

 until pt. 12, north of Sandy Point, where light colored, gritty, 

 micaceous schists dip 20°-25° S. 80 E., with fissures E.-W. 

 underlaid by carbonaceous schists dipping 5°-10° S.SE. At the 

 "Glen" half a mile north of Sandy Pt., about 60' of horizontal 



1 Am. Naturalist, Vol. vi, p. 759. 



