J. D. Dana— Geology of Westchester County, N. Y. 388 
13.—East of Dobbs Ferry, hard gn. N. 3°-22° E. and N. 11° E., 90°; a 
salir, se hie N. 25° E., 60°--70° E.; $ mile E. of werkt hard gh mee 1° 
1 mile E. of Hastings, near Sawmill R., gn. N. 24° E., 
14, Atak 3 ser N. of Ashford 7. commences, the rock in the ‘ates 
there dk gray gn.; 4 mile N. of this, 2. N. 22° E., 80° E.; -. Fe Tarrytown, 4 
ver. on E. horde of the broad valley, 1. N. 32° W., °F.; again N 
neieny i, "90° to 80° E.; W. of river, is compact Leek ste is eP 27°-32° EB. 
= ‘leg vt os of river, 1 mile N. of E. Ta a bluff ‘of l. to east of 
oad, N. 47° E., dip 70° W.; 4 mile S.W. of Unionville la Ne 249 Ry 109: W. 
5 70° K., he latter prevailing. 
ARE —275 ag 8. of H mialge depot, E. of R.R., 24° K., dip 75° 
E. Th Pleasant, . of R.R N.37° E., 60° to 80° f, ite an intercalated 
bed of m. sch.; 0 yds. N. of aaa 1. N. 30°-34° iad 90° to ay" ae ¢ me, 
of de spot on reetwey” l. N. 18° E., 80°, and more to N. d 
2 mile, thin gn., N. 40°-43° K., 90° to 80° KE. At Cha Bir 3 ‘bout ‘a ia 
in width. 14 miles E. of Pleasantville depot, an pore A of 7 
area small; W he eo gn. N. 12° E., 70° W.; 14 mile S.E. of L pene ‘reste 
etching gn. N.9 mW. 
AREA 16.—S, of . Sing R.R. station, N. 37° E., dip 55° E., again N. 
30°49" E., 70°-80° E.; near N. e end of prison, 1. x. 32° E, 40°-50°-60° E.; KE. 
ow on Be sip St., i N. 24° W., 20°-30° i cca of oN m. sch. 
E., 70°~80° E UG uet von te eee ugh, NiS2sr ~40° E., 
foicap! eoatie ‘ieee near entrance to Dale Cemetary, x 20° ee 40°; 4 
i to Camp Woods ° #, 40° E.; eN. 
last, s sch. N. 
—W. of Dale Cenitary, above junction of Post road with road next E., 1. N. 32° 
Sh and W. on aqueduct, /. N. 58° E., with bed of ee gn. N. 58° E., 
aes eatery Croton, 1 mile E. of R.R. station, 250 yds. 8. of Barlow’s, 1. e 
24° W., 60° F.; near last, } mile N.E. of bd pecan _ fine- eae quai 
ried, wer Peatine indistinct; } mile farther N.E., *E,, 
A 19.—} mile 8. of Croton R. at Huntersville, 23 52° K.; W. of 1, rusting 
h N52" iM 90°-80° E.; again S.W. for 4 m i. N. 52°-60° E.; towa rd 
ane Bridge, J. N. y iy kes 8 85° K. to 90° and 85 Ww 
AREA 20.—At Merritt’s Corners, J. N. 36°-44° E., 60° E.; 1 mile N., gn. N. 
42° E., 70° B. 
2 aie east ri of Croton Lake, coarse cryst. 1. mostly N. 7°-22° E., 
contor . 14° B., 60° W.-90, 1. contains graphite; gn. on east side of 
L, ome black), N. tN, 30° E. average N. 14° E., 55°-60° W.; 7. extends 
22.—K. and 8. of depot, J. much contorted, N. 12°-40° K., dip W.; 200 
vas, . “N. 62°-67° W.; dip E, farther south, N. 40°~42° K., dip W.; on hill to 
i , — sch., with granite, N. 40° E., 50° W., again, m. sch. and gn. N. 37°-42° K 
AREA 23.—1 mile N. of south extremity of area, . N. o N. 10° E.; 
600-65° W., varying to 40° W.; gn. in contact with 7. and cof, so gn. 
partly hard feldspathic; W. border of river-valley, gn. N. 5°-11° 60° W. 
ear S. end of area, and for 1 mile E, m. sch. 4 
R. 
N. ie. 22 arte N. 14°-4 + 90° . ‘Kenslen ee hard 
gray ity ie mica) nf 13. i, er a. same \ ts ° K.].—Near N, ex- 
tremity, just W. of Byram Lake, twisted gn., N N. to, a3 W., x. 4° BL; N.E, 
border o ese Fong ‘whitish gn N.S W., N. ° W., contorted, again 
thin mm. N ., again dipoing under last thick bedded ‘laspathic ray banded 
