DRIFT STRIDE. 



67 



for the declination of the magnetic needle, but have copied the observations directly from our note books. 

 The variation at the north-east corner of the State is 12 W., at the north-west part 11 W., as determined 

 by the U. S. Engineers on the boundary line. At Burlington it is about 10 W., according to Professor 

 Thompson. In the south part of the State the variation is 9 W. There is no record to show whether 

 the observations of Adams, as copied below, have been corrected for the declination of the needle. We 

 presume they have been corrected, as he was careful to make similar corrections in all compass observations, 

 in his Reports. 



Locality. 



Vernon, N. E. part, 

 Vernon, N. E. part, 

 Vernon, N. E. part, 

 Guilford, N. E. part, 

 Guilford, 

 Halifax, 



Halifax, village, 

 Halifax, W. part, 

 Wilmington, 

 Wilmington, E. part, 

 Marlboro, 



Marlboro, 



Marlboro, 



Brattleboro, 



Brattleboro, 



Dummerston, 



Summit of Black Mt, 



Williatusville, 



Dover, 



Wardsboro, E. part, 



Wardsboro, 



W. Wardsboro, 



W. Wardsboro, 



S. Wardsboro, 



Kind of Rock. 

 Clay slate, 

 Clay slate, 

 Quartz Rock, 

 Clay slate, 

 Clay slate, 

 Mica schist, 

 Mica schist, 

 Talcose schist, 

 Talcose schist, 

 Talcose schist, 

 Mica schist, 



Serpentine and 

 hornblende schist, 



Hornblende gneiss, 

 Clay slate, 

 Clay slate, 

 Clay slate, 

 Granite, 

 Mica schist, 

 Talcose schist, 

 Talcose schist. 

 Talcoid rock, 

 Mica schist, 

 Mica schist, 

 Mica schist, 



DRIFT STRI.E. 



Course of Stria. 

 N. 12 W., 

 N. 3 W., 

 N. 8E., 

 N. 5 W., 

 N. and S., 

 N. 20 E., 



N. 20 E., and N. 10 E., 

 N. 45 W., 

 N. and S., 



N. 20 W., and N. 30 W., 

 N. 28 E., 



N. 15E.,andN. 45 W., 



Stoss side N. with roches 

 moutones, 



N. 8 W., and N. and S., 



N. and S., 



Rocks embos'd by a force N.10E., 



N. 10 E., 



N. 45 W., 



N. 30 E., and N. 30 W., 



N. 10 W., 



N.20E.,N.10 E.andN. 10 W. 



About N. and S., 



Remarks. 



On the banks of Conn. River. 

 Rocks adjacent for two miles N. 

 and S., similarly situated. 



N. Eng. Slate Co.'s quarry. 



Numerous at Tyler Wilcox's 

 house. (Figured 2 seta.) 



Very fine exhibition of drift 

 striaj in Halifax. 



Glacial. (?) Numerous. 



Rock as flat as if a plane had 

 passed over it. 



Intersecting. 



Upon the high land. 



Intersecting. 



Without distinct striaj. 



Intersecting. 



Mouth of West River, very fine. 

 Found all along Conn. River for 

 a great distance. 



Numerous. 

 Upon flat rocks. 

 Also in the vicinity. 

 Near John Sear's house. 

 Intersecting. 



Intersecting. Angle of ascent, 

 12 25 



Curious bend of stri, 



Observer. 

 0. B. A. 

 C. B. A. 



C. H. H. 

 C. B. A. 

 C. B. A. 

 E. H. 

 E. H. 

 E. H. 

 C. H. H. 

 C. B. A. 

 C. H. H. 



C. H. H. 



C. H. H. 

 C. B. A. 

 C. H. H. 



C. H. H. 

 C. H. H. 

 C. H. H. 

 C. H. H. 

 C. H. H. 

 C. H. H. 

 C. H. H. 

 A. D. H. 

 A. D. H. 



