E. L. Furlong — Exploration of Samwel Cave. 247 



canyon on which the lower cave entrance opens was deepened, 

 the lower entrance was gradually filled. 



The terrace 477 ft. above the river on Hirtz mountain cor- 

 responds to the level of the top of the cliff over the Samwel 

 Cave and probably represents also the present elevation of an 

 early terrace stage mentioned by Dr. Sinclair.* It is 240 ft. 

 above the river level at Baird and is represented by gravel- 

 strewn terraces at that height. This being the case, considera- 

 ble time must have elapsed after the opening of Potter Creek 

 Cave, which opened at the 800 ft. level and prior to the open- 

 ing of the Samwel Cave. 



Possible Quaternary Artifacts. 



In the course of excavation numerous split bones were 

 encountered. Most of these have many marks made by 

 rodents and large carnivore teeth. Some have been gnawed 

 around their entire edge. Split bones were also "found that 

 have polished surfaces like some of those described by Sinclair 

 from the Potter Creek Cave. 



A piece of chipped lava was removed with some bones a 

 few inches below the surface in the deposit in chamber one. 

 It was found after the firing of a blast and may have fallen in 

 from the surface, though its being covered by a film of stalag- 

 mite may support the belief that it was in place. 



A chipped obsidian was removed from a bucket of earth 

 and gravel hoisted from a depth of several feet while sinking 

 the shaft through the deposit filling the lower entrance to 

 chamber two. 



The description and discussion of the archaeological value 

 of these specimens by Professor F. W. Putnam is in press at 

 the time of writing this report. 



University of California, May, 1906. 



* Univ. Calif. Pnbl. Am. Arch, and Eth., vol. ii, No. .1, p. 24. 



