130 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



dent in the Agricultural and Mechanical College at College Station, 

 to spend some days in making a trial collection. This collection has 

 been presented to the United States National Museum and is de- 

 scribed below. 



Mr. Schuchardt kindly furnished the writer with plans of the 

 cave, drawn to scale. Although these were not produced with the 

 expectation that they would be published, they are here presented 

 (figs. 1-3), inasmuch as they give a good idea of the size, the form, 

 and the position of the cave. As engraved, 1 inch represents a length 

 of 20 feet. In figure 3 the floor is divided into squares 10 feet on each 

 side. 



As Dr. T. W. Vaughan has informed the writer, this cave has been 

 excavated in the Edwards limestone, a member of the Lower Cre- 



FlG. 2.— A SECTION OF THE CAVE ALONG TilE LLNE C-D OF FiG. 1. 



taceous. The surface conditions in the neighborhood are not loiown 

 to the writer. The entrance to the cave is a perpendicular shaft, 

 having a diameter of somewhere about 8 feet and a depth of approxi- 

 mately 35 feet. When the horizontal part of the cave is reached it is 

 found to be nearly 70 feet long and 33 feet wide. The height may 

 be as much as 7 feet, but this varies, being sometimes much less. As 

 represented by Mr. Schuchardt, the floor is covered with a layer of 

 fossil-bearing materials as much as 3 feet in thickness. To what ex- 

 tent the thickness has been determined in different parts of the cave 

 the writer does not know. As shown by the materials sent, this is 

 made up to a great extent of unconsolidated sand and clay; but in 

 places it is cemented together by calcium carbonates and iron oxide; 

 and there appear to be lavers of travertine of unknown horizontal 



