638 E. M. KINDLE CANADIAN PLEISTOCENE CONCRETIONS 



James D. Dana : Manual of Geology, first edition ; Concretionary structure, 

 pages 96, 626 ; Origin of concretions, page 626 ; Spherical and flattened 

 concretions, page 627 ; Hollow concretions, page 627 ; 1863. 

 Manual of Geology, fourth edition ; Concretions, 1895, pages 96, 97, 139, 

 140, 274, 493, 603, 665, 677, 688 ; figures 69-84, 141, 142. 



G. M. Davies : Excursion to Netley Heath. Proceedings of the Geological 

 Association, volume XXYIII, 1918, pages 50-51, 



E, F. Davis : The Radiolarian Cherts of the Franciscan Group. University 

 of California publications, Bulletin of the Department of Geology, 

 volume II, number 3, December 23, 1918, pages 252, 263, 272. 



John M. Davison : Quartz nodule with radiate structure. Proceedings of the 

 Rochester Academy of Sciences, volume 3, 1906, pages 268, 269. 



J. W. Dawson : Acadian Geology, third edition ; Cone-in-cone, 1878, page 676, 

 1 figure. 

 On burrows and tracks of invertebrate animals in Paleozoic rocks and 

 other markings. Journal of London Geological Society, volume XLYI, 

 1890, pages 595-618. 

 The Canadian Ice Age. Dawson, Montreal, 1893, pages 266, 267. 



R. S. Dean : Formations of Missouri Cherts. American Journal of Science, 

 volume XLV, 1918, pages 411-415. 



W. Deecke : Die Bilobiten-artigen Konkretionen und das alter der Sog- 

 Knollensteine von Finkenwalde bei Stettin. Zeitschr. deutsch. geol. 

 Gesellsch., volume LYI, Briefl. Mitth., 1106, pages 83-90. 



H. T. de la Beche : Researches in Theoretical Geology, 1834, pages 94-98, 

 figures 11-14. 



H. DE DoRLODOT ." Presentation d'un Echantillon de Limonite en Concretion. 

 Ann. Soc. Geol. Belg., Liege, XL, Bull., 1913, pages 79-80. 



M. Henki Douville : Les Coal-Balls du Yorkshire. Bull. Soc. Geol. France, 

 ser. lY, volume Y, 1905, pages 154-156. 



Benj. K. Emerson : Geology of Old Hampshire County, Massachusetts. 

 United States Geological Survey, Monograph XXIX, 1898, pages 711- 

 720, plate xx. 



E. Emmons : Report of Second Geological District of the State of New York. 

 Report of Geology of New York, volume 1, 1837, pages 232, 233, fig- 

 ure 15. 



A. Erdmann : Expose des formations quaternaires de la Suede ; Stockholm, 

 1868, pages 84-87. 

 Stalagmit-och pisolitarade Bildningar i Hoganas Stenkolsgrufor. Geol. 

 Foren. Stockh. Forh., XXI Y, 1902, pages 501-507. 



William H. Fitton : Observations on the strata between the chalk and Ox- 

 ford oolite in the southeast of England. Transactions of the Geolog- 

 ical Society of London, volume lY (second series), part 2, 1836, page 

 103. (The author suggests that electrical agencies may be a factor 

 in the formation of concretions.) 



Aug. F. Foerste: A report on the Geology of the Middle and Upper Silurian 

 rocks of Clark, Jefferson, Ripley, Jennings, and southern Decatur 

 counties, Indiana. Twenty-first Annual Report of the Department of 

 Geology and Natural Resources of the State of Indiana, 1896, page 

 224. 



