MOOK, STUDY OF THE MORRISON FORMATION 183 



and the age and origin oi: the Atlantosaurus beds." Carn. Mus. Mem., vol. 

 ii, pp. 1-72, 6 pis., 28 figs., 1903. [The Atlantosaurus beds, or Morrison, 

 are Jurassic in age. They represent the result of combined erosion and 

 deposition, the latter process being the dominant one.] 



1903. 5. Smith, W. S. Tangier : "Hartville, Wyoming, quadrangle." U. S. 

 Geol. Surv., Geol. Atlas, Folio No. 91, 6 pp., 2 maps, 2 section sheets, 1 

 illustration sheet, 1903. [Short description of the Morrison formation.] 



1903. 6. Stanton, T. W. : "A new fresh-water molluscan faunule from the 

 Cretaceous of Montana." Amer. Philos. Soc, Proc, vol. Ixii, pp. 188-189, 

 1 pl., 1903. [Discussion of the age of the Morrison formation.] 



1903. 7. Ward, L. F. : "Correlation of the Potomac of Maryland and Vir- 

 ginia." Abst., Sci., N. S., vol. xvii, pp. 941-942, 1903. [General discu^ision.] 



1903. 8. Johnson, D. W. : "Geology of the Cerillos Hills, New Mexico. Pt. T. 

 General Geology." Sch. Mines Quart., vol. xxiv, pp. 303-350, 7 figs., 7 pis. ; 

 pp. 456-500, 6 figs., 10 pis., 1903. [Discussion of origin of sediments and 

 their, criteria.] 



1903. 9. Tsi nan fu Sheet. Kartographische Abtheihmg der Konigl. Preuss. 

 Landes-Aufnahme. Karte von Ost-China, 1901? [Pub. 1903]. [Detailed 

 map of part of the alluvial plain in eastern China. Shows streams inter- 

 lacing in a complicated manner, many lakes and swamps on the fan.] 



1903. 10. Nanking Sheet. Kartographische Abtheilung der Konigl. Preuss. 

 Landes-Aufnahme. Karte von Ost-China [Pub. 1903]. [Map of the delta 

 of the Yangtse Kiang. Many lakes and swamps are on it. Some of the 

 lakes are 50 miles or more in length.] 



1904. 1. Hatcher, J. B. : "An attempt to correlate the marine with the non- 

 marine formations of the Middle West." Amer. Philos. Soc, Proc, vol. 

 xliii, pp. 341-365, 2 figs., 1904. [The Atlantosaurus beds and the Dakota 

 considered as the possible equivalents of the marine Jurassic and Lower 

 Cretaceous.] 



1904. 2. Jaggar, Thomas A. : "Economic resources of the northern Black 

 Hills, pt. 1, General Geology." U. S. Geol. Surv., Professional Paper No. 

 26, pp. 13-41, pl. 1, 1904. [Section and short description of the Morrison.] 



1904. 3. Peck, Fred. B. : "The Atlantosaur and Titanotherium beds of Wyo- 

 ming." Wyoming Hist, and Geol. Soc, Proc. and Col., vol. viii, pp. 25-41, 

 5 pis., 1904. [Sections, stratigraphical descriptions and faunal lists.] 



1904. 4. Darton, N. H. : "Newcastle, Wyoming-South Dakota, quadrangle." 

 U. S. Geol. Surv., Geol. Atlas, Folio No. 107, 9 pp., 4 maps, 6 figs., section 

 sheet, illustration sheet, 1904. [Description of the Morrison.] 



1904. 5. Darton, N. H., and Smith, W. S. T. : "Edgemont, South Dakota- 

 Nebraska, quadrangle." U. S. Geol. Surv., Geol. Atlas. Folio No. 108. 10 

 pp., 4 maps, 5 figs., section sheet, illustration sheet, 1904. [Description 

 and section of Morrison.] 



1904. 6. Spencer, A. C. : "The copper deposits of the Encampment district, 

 Wyoming." IJ. S. Geol. Surv.. Professional Paper No. 25. 107 pp., 2 pis., 

 49 figs., 1904. [Notes 400 feet of fresh-water Jurassic beds with lime- 

 stones.] 



1904. 7. Lee, W. T. : "Age of the Atlantosaurus beds." Geol. Soc. Amer., 

 Bull., vol. xiv, pp. 531-532, 1904. [These beds can be correlated with the 

 Lower Cretaceous of Texas.] 



