532 rAKIioNlKKKnllS KOKMATIONS AND KAUNAS oK (MILOKAUO. 



"MTT, Leaiivillc ilisirirl; hcailvillr liiiioytone. Soiitli slope of ^Iduiit liniss, liclow lirst spur of 

 jioi'pliyrv. Tup (pf lihick limestone in loose concretions of chert eoveriiij; tlie upper portion 

 of slope. 

 A. Lakes, August ai, IHSO. 



2378. Leadville district; Leadville limestone. Fo.ssils from ore-lietiriii^; limestone, liead of Saeraniento 



Guldi. 

 J. Long. 



2379. Engineer Mountain i|uadrauijle; Ouray limestone. West bank of Cascade Creek, about one- 



half mile below tlie bridiie on the Silvertou road. Seemingly in place at the top of the Ouray 

 limestone. 

 Cross and Girty, August 7, 1900. 



2380. Engineer Mountain quadrangle; Ouray limestone. Just east of old trail uja Coalbank Hill, at 



elevation of 9,97.5 feet. Loose jiieces on, and probably derived from, the top of the Ouray 

 limestone. 

 G. H. Girty, August 8, 1900. 



2381. Needle Mountains quadrangle. "Chert Mesa," 11,600 feet elevation. AVest of West Fork of 



Canyon Creek. Fossils from chert nodules in the Molas formation, above the Ouray 

 limestone. 

 G. H. Girty, July 23, 1900. 



2382. Engineer Mountain quadrangle; Ouray bmestone. Clierty limestone at the top of the forma 



tion Near Cascade Creek, on its west bank, about one-half mile below the bridge where 

 crossed by Silverton road. 

 Stose and Girty, August 7, 1900. 



2384. Engineer Mountain quadrangle; Ouray limestone. Just west of old trail up Coalbank Hill, at 



elevation of 9,900 feet. The ledge of limestone just above the typical Ouray limestone. 

 G. H. Girty, August 8, 1900. 



2385. Engineer Mountain quadrangle; Ouray limestone. On old trail outlet of lake east of Coalbank 



Hill Pass. 

 Cross and Girty, August 11, 1900. 



2386. Needle Mountains quadrangle. South side of Canyon Creek. Exposures near the trail to a 



point at 10,000-foot elevation near the quadrangle line. 

 Cross, Howe, and Girty, July 25, 1900. 



2387. Engineer Mountain quadrangle. Near old trail on Coalbank Hill, about 10,000-foot elevation. 



Green cherts above the Ouray limestone. 

 Cross and Girty, August 7, 1900. 



2388. Durango quadrangle; Ouray limestone. Top of formation on the east side of Animas River, 



near Baker's bridge. 

 Cross and Spencer, 1889. 



2389. Castle Rock quadrangle; Millsap limestone. North bank of West Plum Creek, Perry Park, Colo. 

 W. T. Lee, 1901. See map and page 97 of American Geologist, Vol. XXIX, No. 2, 1902. 



