Geologie. 497 



6842 Darton, N. H., Preliminary Report on the Geology and Water Resources of 

 Nebraska west of the 103. Meridian. Washington (Prof. Pap. U. S. Geol. Surv.) 

 4 903. 4. 69 pg. with 9 colored maps, 34 plates and 23 figures. Mark 8 



6843 Demaret, L., Les principaux Gisements de Mercure du monde. Paris 4 904. 8. 

 80 pg. av. 3 planches et 28 figures. 350 



684 4 Emmons, S. F., and flayes, C. W., Contributions to Economic Geology, 4 903. 



Washington (Bull. U. S. Geol. Surv.) 4 904. 8. 527 pg. with 4 map and 4 4 figures. 6 



The same, 1902. 1903. 449 pg. M. 6. 



6845 Girty, Cr. H., The Carboniferous Formations and Faunas of Colorado. Washington 

 (Prof. Pap. U. S. Geol. Surv.) 4 903. 4. 546 pg. with 4 plates. 1 4 6 



846 Hayden, King, Powell and Wheeler Surveys. — Schmeckebier, L. F., 

 Gatalogue and Index of the Publications of the Hayden, King, Powell and Wheeler 

 Surveys, namely: Geological and geographical Survey of the Territories, geolog. 

 Exploration of the 40. Parallel, geolog. and geograph. Survey of the Rocky Moun- 

 tain Region, geograph. Surveys west of the 4 00. Meridian. Washington (Bull. U. 

 S. Geol. Surv.) 4 904. 8. 208 pg. 4 



6847 Paqnet, N., L'Or en Guyane Venezuölienne. Paris 4 904. 8. 4 42 pg. av. 3 planches 

 et figures. 4so 



6848 Pnblication of the Earthquake Investigation Committee in Foreign Languages. 

 No. 4 6. Tokyo 4 90 4. 8. 4 4 7 pg. 



6849 Ransome, F. L, Geology of the Globe Copper District, Arizona. Washington 

 (Prof. Pap. U. S. Geol. Surv.) 4 903. 4. 4 68 pg. with 27 maps and plates (7 co- 

 lored) and 4 figures. 10 



6850 Reader, G. F., Report on the Rampur Coal-field. (Calcutta, Mem. Geol. Surv. Ind.) 

 4 90 1 . roy. 8. 36 pg. with 4 map and 3 plates. 3 



685 4 Ries, H., The Clays of the United States east of the Mississippi River. Washington 



(Prof. Pap. U. S. Geol. Surv.) 4 903. 4. 298 pg. with 9 maps and plates (3 colored) 

 and 4 4 figures. 4 2 



6852 Schräder, F. C, A Reconnaissance in Northern Alaska across the Rocky Moun- 

 tains along Koyukuk, John, Anaktuvuk and Colville Rivers and the Arctic Goast 

 to Cape Lisburne, in 4 904. With notes by W. J. Peters. Washington (Prof. 

 Pap. U. S. Geol. Surv.) 4 904. 4. 4 39 pg. with 2 topographical and 1 geological 

 maps, 4 3 plates and 4 figures. 8 



6853 Smith, G. 0., and Willis, B., Contributions to the Geology of Washington : Geo- 

 logy and Physiography of Central Washington. Physiography and Deformation 

 of the Wenatchee-Chelan District, Cascade Range. Washington (Prof. Pap. U. S. 

 Geol. Surv.) 1903. 4. 4 04 pg. with 4 maps (7 colored), 4 plates and 3 figures. 8 



6854 Spnrr, J. E., Descriptive Geology of Nevada south of the 40. Parallel and ad- 

 jacent portions of California. Washington (Bull. ü. S. Geol. Surv.) 1903. 8. 229 pg. 

 with 2 colored maps, 6 plates and 25 figures. 7 



6855 — The Ore Deposits of Tonopah, Nevada. Preliminary report. Washington (Bull. 

 U. S. Geol. Surv.) 190 3. 8. 31 pg. with 1 map and 4 figures. 4 



6856 Trenbert, F., Die Sonne als Ursache der hohen Temperatur in den Tiefen der 

 Erde, der Aufrichtung der Gebirge und der vulkanischen Erscheinungen. Geo- 

 physikalische u. geologische Skizze. München 1904. gr. 8. 63 pg. 1so 

 Van't Hoff, J. H., n. A., Untersuchungen über die Bildungsverhältnisse der oce- 

 anischen Salzablagerungen — siehe Nr. 6938. 



6857 Weber, F., Ueber den Kali-Syenit des Piz Giuf und Umgebung (östliches Aar- 

 massiv) und seine Ganggefolgschaft. Bern (Beitr. geol. Karte Schweiz) 4 904. 4. 

 4 u. 4 81 pg. m. 5 Tafeln u. 14 Figuren. 8 



6858 Weidman, S., Preliminary Report on the Soils and Agriculturae Conditions of 

 North Central Wisconsin. Madison (Wisc. Geol. and Nat. Hist. Surv.) 1904. 8. 

 64 pg. with 10 plates (incl. soil map). 5 



(R. Friedländer de Sohn in (Berlin. 



Von uns ist zu beziehen: 



Brauns, D., Geology of the Environs of Tokio. IV and 84 pgs. 

 in-4., with 2 maps and 6 lithogr. plates in-folio (figures of 

 Pliocene Mollusca). Tokio 1881. — Preis 10 Mark. 



