RECORDS OF MEETINGS OF 1909. 
287 
Henry A. C. de Rubio, 52 William Street, 
and the election ordered to stand as of October 5, 1908. 
The Academy then adjourned. 
Edmund Otis Hovey, 
Recording Secretary. 
SECTION OF GEOLOGY AND MINERALOGY. 
February 1, 1909. 
Section met at 8:15 P. M., Vice-President Stevenson presiding. 
The minutes of the last meeting of the Section were read and approved. 
The following programme was then offered: 
Edmund Otis Hovey, Notes on Striations, U-Shaped Valleys and 
Hanging Valleys Produced by Other than 
Glacial Action. 
Harold J. Cook, In the Sioux County, Nebraska, Bone Beds in 
1908. 
Summary of Papers. 
Dr. Hovey said, in abstract: The volcanic sand-blasts due to the eruption 
of Mt. Pele produced striations and grooves in the material over which they 
passed that strongly resemble the striations and grooves produced by ice 
action. The heavily burdened streams of the Soufriere of St. Vincent have 
carved out rock channels of typical U-shape in the old lava flows of the 
volcano. The sea cuts back the coast faster than some of the streams erode, 
producing hanging valleys. 
The paper was illustrated by a large number of lantern slides. 
Mr. Cook traced the successive ascending formations into Sioux County, 
Nebraska, up the Hat Creek Valley and as far south as the Niobrara River 
at Agate, Nebraska, beginning with a scene in the typical Oligocene “Big 
Bad Lands” in South Dakota. Here are the Lower Harrison beds, a phase 
of the Lower Miocene, in which the well-known Agate Spring fossil quarries 
are located. Views characteristic of the topography, erosion forms and 
typical fossils of these beds were shown, and particular attention was paid 
to the methods of collecting, cjuarrying and boxing fossils in and about the 
Agate Spring quarries. Attention was also called to the great number of 
