330 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 53 



(im and ip) limestones of No. 2 of the Silver Peak Group, Bar- 

 rel Spring section [Walcott, 1908c, p. 189], about 2.5 miles (4 km.) 

 south of Barrel Spring/ and .5 mile (.8 km.) east of the road ; (il) 

 same locality as No. im, in the shales of No. 3 of the Barrel Spring 

 section [Walcott, 1908c, p. 189] ; (li) 1.5 miles (2.4 km.) south of 

 Barrel Spring in No. 6 of the Barrel Spring section [Walcott, i9o8f, 

 p. 189] ; (10) same horizon as No. il, 3 miles (4.8 km.) southeast 

 of Barrel Spring; (ly) fine, arenaceous shales in small buttes in 

 Clayton Valley, about 3 miles (4.8 km.) southeast of Silver Peak; 

 and (i6g) fine, arenaceous shale at the Paymaster Mining Camp. 

 .25 mile (.4 km.) west of Esmeralda; all in Esmeralda County. 

 Nevada. 



(30a') thin-bedded limestone on the north side of Big Cottonwood 

 Canyon, i mile (1.6 km.) below Argenta. southeast of Salt Lake 

 City, Utah. 



(60c) calcareous sandstones of the upper 20 feet of the St. Piran 

 formation; and (35I) limestone layer above the arenaceous beds of 

 No. 60C, and below an argillaceous shale ; both on the south slope 

 of Ptarmigan Pass, near the head of Corral Creek, 9 miles ( 14.4 km.) 

 northeast of Laggan, Alberta. 



(SSe) about 270 feet (83 m.) below the top of the Lower Cam- 

 brian in greenish, siliceous shales (64 feet) forming 2C of the field 

 section in the amphitheater between Popes Peak and Mt. Whyte, 

 3 miles northwest of Lake Louise, which is southeast of Laggan. 

 Alberta. 



(SSh) about 375 feet (114m.) below the top of the Lower Cam- 

 brian in the shales of No. 4 of the Mount Whyte formation [Wal- 

 cott, 1908c, pp. 214-215], on Mount Bosworth. north of the Canadian 

 Pacific Railway between Hector and Stephen; (ssf) about 300 feet 

 (91 m.) below the top of the Lower Cambrian in the limestone 

 forming 6 of the Mount Whyte formation [Walcott. 1908&, p. 242]. 

 just above the old tunnel on the north shoulder of Mt. Stephen. 3 

 miles (4.8km.) east of Field; and (571) about 175 feet (53m.) 

 below the top of the Lower Cambrian in the beds forming 4 of the 

 Mount Whyte formation [Walcott, 1908&, p. 241] at the same 

 locality as No. 35f ; all in British Columbia. 



'Barrel Spring is about 10 miles (16 km.) south of the town of Silver Peak 

 in the Silver Peak Quadrangle. 



