366 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



74120 Colorado. Rocks from the Rico Mountains, 107 specimens. 



t° Ransome, Twenty-second Ann. Rept. U. S. Geol. Surv., Pt. II, 



74228. 1902, pp. 237-397. 



74229 Colorado. Rocks from the Silverton Quadrangle, 157 speci- 

 to mens. 



743 86 - Ransome, Bull. No. 182, U. S. Geol. Surv., 1901. 



73690. Colorado. Rocks from the Tenmile District, 154 specimens. 



Cross, Fourteenth Ann. Rept. U. S. Geol. Surv., Pt. II, 1894, pp. 

 222-224.— Emmons, U. S. Geol. Surv., Folio No. 48, Geol. 

 Atlas, 1898. 



74667. Colorado. Rocks of the Denver Basin, 226 specimens. 



Emmons, Cross, and Eldridge, Mon. XXVII. U. S. Geol. Surv., 1896. 



62645 Colorado. Silver ores of the Silver Cliff District, Custer County, 

 to 83 specimens. 



62656. Emmons, Seventeenth Ann. Rept. U. S. Geol. Surv., Pt. II, 1896, 



pp. 405-472, pi. 37- 



62628 Colorado. Spherulites in acid eruptive rocks, 6 specimens. 



Cross, Bull. Wash. Philos. Soc, XI, 1891, pp. 411-443, pis. 5, 6. 



to 

 62631. 



63639. . 



20301 Colorado (and Nevada). Rocks from U. S. Exploration of the 



to 40th Parallel, 3,250 specimens. 



22792. Zirkel, Rept. Geol. Expl. of 40th Parallel, VI, 1876. 



6935 District of Columbia. Granitic rocks, fresh and disintegrated, 



to 4 specimens. 



6 93 8 - Merrill, Bull. Geol. Soc. Amer., VI, 1895, pp. 321-332. 



Fortieth Parallel Collections. See Colorado and Nevada. 



67524 Galapagos Islands. Rocks. 



to Merrill, Bull. Mus. Comp. Zool., Harvard College, XVI, No. 13, 1893. 

 67536.. 



63887. Greenland. Rocks from Umanak Island and Nugsuaks Penin- 



75478 sula, 85 specimens. 



t° Phalen, Smithsonian Misc. Coll. Quart., XLV, 1904, pp. 1S3-212, 



75491- pis. 53-55 . 



538 1 1 Hawaiian Islands. Nepheline-melilite-basalt, 507 specimens. 



to 

 54081. 



Merrill, Amer. Geol., XXV, 1900, pp. 312, 313. 



75273. Idaho. Rocks from Silver City and Nampa quadrangles, 44 

 specimens. 



Lindgren and Drake, U. S. Geol. Surv., Folio No. 104, Geol. Atlas, 

 1904. 



73756: Idaho. Rocks from the Boise Quadrangle, 49 specimens. 



Lindgren, Eighteenth Ann. Rept. U. S. Geol. Surv., Pt. Ill, 1S9S, 

 PP- 7°5, 7°6; U. S. Geol. Surv., Folio No. 45, Geol. Atlas, 1898. 



