-OO Tlie Anien'rcTH Geologist. Biardi, ifcg.s 
3. "Limestone, with shale alternating, 395 feet." (The upper twenty 
feet, or so, possibly Devonian limestone, the rest is Niagara limestone 
with arenaceous shale in caverns.) From 524 to 129. 
4. "Shale, 205 feet." (Hudson River shale.) From 129 to — "^d. 
5. "Limestone, 330 feet." (Galena and Trenton limestone.) Froni 
— 76 to • — 406. 
6. "Blue clay, 25 feet." (Shale or clay associated with the St. Peter 
sandstone.) From —406 to — 431. 
7. "Sand and some shale, 204 feet." (St. Peter sandstone with, 
probably, some associated shale below.) From — 431 to —635. 
The several formations differ but slightly in thickness from the gen 
eral averages of ten other wells reported from this vicinity two year.-. 
ago.* Li common with two other wells lying north of this one, this 
boring exhibits a considerable amount of Coal Measure shale in pocket,- 
in the Niagara limestone. The overlying Devonian limestone is studded 
with caverns filled in the same way, and these generally follow joints, 
which have a north and south trend. From the nature of the filling, 
which in the uppermost caverns appears to be continuous with the basal 
sediments of the Coal Measures, it appears evident that these caves must 
have been tunneled out either during the later part of the Devonian 
age, when sedimentation in Devonian waters had ceased, or else during 
the Subcarboniferous age. The distribution of the rocks of this latter 
age is such as to indicate that, at the time they were laid down, the 
drainage of this region was from north to south. This coincides with, 
the observed trend of the filled caverns. 
Roc/: Island, lib. J. .\, I'dden. 
Dec. 2g, /8gy. 
PERSONAL AND SCIENTIFIC NEWS. 
New York Academv of Sciences, Section of Geolog)-. 
Jan. 17, i8g8. Meeting opened with a paper by Mr. Ar- 
thur Hollick, entitled " Further Notes on Hlock ishtnd: 
geology and botany.*" 
Mr. Hollick gave a summary of his work done on Block island in 
July, 1897, and particularly of his success in tracing eastward from 
Long island the Amboy clays which had previously been determined by 
palreontological evidence on Staten island. Long island and Martha's 
Vineyard. Something like fifteen species of Middle Cretaceous flora, 
nine of them typical of the xA-mboy clays, have been found. Mr. Hol- 
lick then classified the existing flora of the island physiographically into 
that of the hills, peat bogs, sand dunes and beaches, salt marshes and 
salt water. In the course of his work he added to the already pub- 
lished lists something like twenty-four new species, although it is not 
*Vi(t(' \n jiccoiint of tlie Pabt'ctzoic Rock.';, etc., 17Mi Ann. Kciit. V . S. ( Jcol. Surv.. 
P. II, p. ,S29. 
