1895. ] NEW YORK ACADEMY OF SCIENCES. gh 
the Post-Pliocene series, probably underlaid by clay and over- 
laid in many places unconformably by the surface drift. 
The range of hills which marks the extreme southern limit of 
the drift is quite irregular, like that on Long Island, and aver- 
ages about 90 ft. in height, likewise partly formed by the up- 
heaval of stratified beds in folds parallel to the front of the ice 
sheet, which in this region had a direction a little south of east. 
Sankaty Head, the most easterly point of the range, has an alti- 
tude of about 105 ft., being the highest point on the island. It 
derives its geological importance from the section there exposed 
and.the beds of Post-Pliocene fossils occurring near the foot of 
the bluff. 
The locality was visited in 1849 by Cabot and Desor, who in 
a short article on the subject made some stratigraphical gen- 
eralizations which were entirely imaginary. In 1875 it was 
visited by a party of the U. 8. Fish Commission consisting of 
Prof. A. Hyatt, Mr. Sanderson Smith, Mr. C. H. Merriam and 
others, who made a collection of the fossils. Afterwards Mr. 
S. H. Scudder, of Cambridge, Mass., had an excavation made 
into the cliff, and Mr. Richard Rathbun made a collection of 
fossils. As the result of these researches we have the article 
published in the American Journal of Science, Vol. X., 3d 
Series. by Prof. A. Verrill. As my own observations differ 
somewhat from those of Mr. Scudder, I shall give them in de- 
tail, afterward comparing my conclusions with those of the in- 
vestigator in question. 
At a point about three hundred yards south of the lighthouse, 
which is near the summit of the eminence the following section 
is exposed : 
Peotinecdark-Orittedusands oo Shs 8 se 2). oss hee 3 ft. 
2. Yellow sandy drift ferruginous at the bottom 
ang concaming pebbles coc. occ aces wes cee eres a 
3. Coarse gray stratified sand with particles of 
PCT TIES Bic OPN os RRO ORR TEER Re 40 * 
4. Fine white clayey sand with ferruginous streaks 
and very minute particles of greensand............ 10 “ 
Be EE IMETUGIOC Mc rrsicvets vwiefe cess ¢ hielo rem in’s 9 sie seis = « kes 
GeeUinper Smell Weds. voces e ts a.< 6 mare sirit ane te = 8 in. 
1. Clayey ferruginous sand ..........-..seseeees 4“ 
Breau EU CRESINON ocy ar atch eis lays Shs ee 9 ie foln) oats oan e wyele 2 Ras a 
OPO Wem SMEN DEM. csinct sro + oioce oo oes 2/5 216510 #010 Dh 
10. Red sand with fragments of blue clay ........ | i 
11. White sand of varying quality and size....... 4 f* 
Concealed by turf and beach sand............ 24 ‘ 
PG Galera oe eel agen 90 ft. 
