496 Palaeontologie. — Geologie. 



«848 Professional Papers of the United States Geological Survey. C. D. Walcott, 

 Director. No. 11, 12, 16—20. Washington 1903 — 04. 4. with 133 partly colored 

 maps and plates and figures. Mark 69 



No. 11: Ries, H., The Clays of the United States east of the Mississippi River. 298 pg. with 

 9 maps and plates. M. 12. — No. 12: Ransome, F. L., Geology of the Globe Copper District, 

 Ariz. 168 pg. with 27 maps and plates. M. 10. — No. 16: Girty, G. H., Carboniferous Formations 

 and Faunas of Colorado. 546 pg. with 10 plates. M. 16. — No. 17: Dar ton, N. H., Preliminary 

 report on the Geology and Water Resources of Nebraska west of the 103. meridian. 69 pg. with 

 43 maps and plates. M. 8. — No. 18: lddings, J. P., Chemical composition of lgneous Rocks, 

 expressed by means of diagrams. 98 pg. with 8 plates. M. 7. — No. 19: Smith, G. O., and 

 Willis, B., Contributions to the Geology of Washington. 101 pg. with 20 maps and plates. M. 8. 

 — No. 20: Schräder, F. C, Reconnaissance in Northern Alaska across the Rocky Mountains along 

 Kogukuk, John and Colville River. 139 pg. with 16 maps and plates. M. 8. 



€829 Report, Twenty-fourth annual, of the Director (C. D. Walcott) of the United 

 States Geological Survey to the Secretary of the Interior, 1902—03. Washington 

 1903. 4. 302 pg. with 1 portrait (of J. W. Powell) and 25 maps. cloth. 12 



€830 The United States Geological Snrvey, its Origin, Development, Organization 

 and Operations. Washington (Bull. U. S. Geol. Surv,) 1904. 8. 205 pg. with 

 6 maps (2 colored), 3 plates and 5 figures. 4 



€831 Weeks, F. B M Bibliography and Index of North American Geology, Paleontology, 

 Petrology and Mineralogy for the year 1902. Washington (Bull. U. S. Geol. Surv.) 

 1903. 8. 200 pg. 3 



Palaeontologie. 



Girty, G. H., The Carboniferous Faunas of Colorado — see nr. 6845. 

 €832 Meunier, F., Monographie des C6cidomyidae, Sciaridae, Mycetophilidae et Chiro- 

 nomidae de l'Ambre de la Baltique. Bruxelles 190 4. gr. in-8. 264 pg. avec 

 16 planches. 18 

 €833 — Beitrag zur Syrphiden - Fauna des Bernsteins. Berlin (Jahrb. Preuss. Geol. 



Landesanst.) 1904. gr. 8. 10 pg. mit 1 Tafel. Oso 

 €83 4 Oliver, F. W., Structure and Affinities of Stephanospermum, Brongniart, a Genus 

 of fossil Gymnosperm Seeds. London (Trans. Linn. Soc.) 1904. roy. 4. 40 pg. 

 with 4 plates and 2 figures. 12 

 6835 Rivista Italiana di Paleontologia. Redattore: P. Vinassa de Regny. Anno X, 

 1904. Fascicolo 3. Perugia 1904. in-8. gr. pg. 65—94 c. 2 tavole in-4. 



Cont. : S a n g i o r g i , D., Lo Schlier nell' Imolese. — Bortolotti, C, Denti di Proboscidati, 

 di Rinoceronte e di Ippopotamo nell' antica collezione Canali di Perugia (c. 2 tavv.). — Rassegna 

 di pubblicazioni Italiane ed estere. 



Prezzo dell' anno completo (4 fascic.) M. 8. 



€836 Yokoyama, ML, Jurassic Ammonites from Echizen and Nagato. (Tokyo, Journ. 

 Coli. Sc.) 1904. 4. 17 pg. with 4 plates and 1 figure. 3 



Geologie. 



€837 Adams, G. J., and Others, Gypsum Deposits in the United States. Washington 

 (Bull. U. S. Geol. Surv.) 1904. 8. 129 pg. with 21 maps and plates and 32 figures. 5 



-6838 Bayley, W. S., The Menomee Iron-bearing District of Michigan. Washington 

 (Monogr. U. S. Geol. Surv.) 190 4. 4. 513 pg. with 23 colored maps, 20 plates 

 and 54 figures. cloth. 25 



6839 Bownocker, J. A., The occurrence and exploitation of Petroleum — see: Ohio 

 nr. 6827. 



<6840 Carte geolOgiqne de l'Algörie, 1: 50 000. Publice par le Service göologique de 

 1'AlgeYie sous la direction de M. Jacob. No. 8/23 et 62: Dellys-Tizi-Ouzou ; 

 Marengo. Paris 1904. 2 cartes coloriäes in fol. Chaque feuille 6 



collöe sur toile et pliöe 9 



Cartes pr6c6demment parues: Menerville, Palestro, Blida, Constantine, M6dea, Renault, Beni- 

 Saf, Carnot. 



6841 Collier, A. J., The Coal Resources of the Yukon, Alaska. Washington (Bull. U. 

 S. Geol. Surv.) 1903. 8. 71 pg. with 2 maps (1 colored), 4 plates and 3 figures. 2 



Naturae Kovitates. Jahrg. XXVI, No. 16. R. Friedländer & Sohn in Berlin. 



