10 TRANSACTIONS OF THE [oor. 28, 
Pliocene(?) of Rapides Parish Louisiana.* These specimens 
also are described as being completely silicified and they ap- 
parently represent the same or nearly the same geological hori- 
zon as that at Sankaty Head. The age of our specimen is 
doubtless older than the Post-Pliocene sands in which it was 
found, however, and probably represents material which was 
eroded from Tertiary strata formerly existing at some point on 
or near to the present eastern coast of Massachusetts. 
This conclusion seems to be a reasonable one so far as the 
geological age is concerned, as palms have not been definitely 
recognized below upper Cretaceous strata, and the only indica- 
tion which we have of any palm representing the Cretaceous in 
eastern North America is the problematic one which I have 
called Serenopsis from Glen Cove, Long Island.+ 
This is of significance when taken in connection with the sup- 
posed existence of marine cretaceous strata at Marshfield, 
Mass.,{ in which case the Tertiary strata, had they been present, 
would have normally occupied an area yet further to the east- 
ward. It is of further significance as an indication of the prob- 
able direction of glacial movement in the region under consid- 
eration, and is confirmatory of Prof. Shaler’s idea that nearly 
all the glacial waste of Nantucket was derived from a region 
east of “a meridional ine lying at least ten miles east of Bos- 
ton.’’§ 
Norr.—Since writing the above I have received the following 
paper from Dr. F. J. H. Merrill of the New York State Museum, 
with request that it be published in full: 
POST-PLIOCENE DEPOSITS OF SANKATY HEAD.| 
By FrReEeprErick J. H. MERRILL. 
The geology of Nantucket is quite similar to that of Long 
Island, as it consists largely of stratified sands and gravels of 
* Description of two species of Palmoxylon—one new—from Louisiana, F. H. 
Knowlton, Proc. U. 8. Nat. Mus. XI. (1888); 89-91, Pl. XXX. 
+1. Bull. Torrey Bot. Club, XX. (1893) 168, 169, pl. CXLIX. 
Dati Or OOS OBO tpl. 8G Lanxevils 
t1. Hitchcock, Edward. Am. Journ. Sci. XXII. (1832), 1-70. 
2. Shaler, N.S. Bull. Geol. Soc. Am. I. (1890), 443-452, 
2The Geology of Nantucket, 7. ¢., p. 27. 
| The Editor of the Transactions has received this paper with the statement that it 
is the same one that was read October 25, 1886, under title ‘‘ Notes on the Geology of 
Block Island and Nantucket.’’ On p. 35 of Vol. VI. of the Transactions it is recorded as 
printed in the Annals, Vol. I[V. This is erroneous, as it has not previously been sent in 
for publication. It is inserted at this point by order of the Council. 
