58 ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 480 



CRIDLAND, A. A., J. E. MORRIS , and R. W. BAXTER, 1963, The Pennsylvanian plants of (P,c) 

 Kansas and their stratigraphic significance: Palaeontographica, Abt. B, 

 v. 112, p. 58-92. 



CRONEIS, C. G., 1939, Adolf Carl Noe* [1873-1939 J: Science, n.s., v. 89, no. 2313, 

 p. 379-380. 



CRONEIS, C. G., 1°40, Memorial to Adolf Carl Noe [1873-1939]: Geol. Soc. America 

 Proc, 1939, P. 219-227. 



CROOK, A. R., 1907, A history of the Illinois State Museum of Natural History: 

 Springfield, Illinois, 21 p. 



CROOK, A. R., 1912, List of fossils on exhibition in the Illinois State Museum of (P,c) 



Natural History, in Report on the progress and condition of the Illinois 

 State Museum of Natural History 1909 and 1910: Springfield, Illinois, 

 p. 446-55 1 *-- 



CROSS, A. T., 1969, Coal balls: Their origin, nature, geologic significance and 



distribution [abs.]: Geol. Soc. America Program, Atlantic City, New Jer- 

 sey, p. 42. 



DAHLGREN, B. E., 1933, A forest of the coal age: Field Mus. Nat. History Geology (P,c,b) 

 Leaflet 14, 39 p. 



DAMBERGER, H. H. , 1970, Petrographic character of the Colchester (No. 2) Coal Mem- 

 ber at the Banner Mine, Peoria and Pulton Counties, Illinois, in Smith, 

 W. H., R. B. Nance, M. E. Hopkins, R. G. Johnson and C W. Shabica, Dep- 

 ositional environments in parts of the Carbondale Formation — western and 

 northern Illinois, Francis Creek Shale and associated strata and Mazon 

 Creek biota: Illinois Geol. Survey Guidebook Ser. 8, p. 99-105 . 



DARRAH, W. C, 1936a, A new Macros tachya from the Carboniferous of Illinois: Har- (P,c,s) 

 vard Univ. Bot. Mus. Leaflet, v. 4, no. 4, p. 52-63. 



DARRAH, W. C, 1936b, The peel method in paleobotany: Harvard Univ. Bot. Mus. Leaf- 

 let, v. 4, p. 69-83. 



DARRAH, W. C, 1937a, American Carboniferous floras: 2 e Congres pour l'avancement (P,c) 

 des etudes stratigraphie et de ge'ologie du Carbonifere, Compte Rendu, 

 1935, v. 1, p. 109-129. 



DARRAH, W. C, 1937b, Codonotheca and Crossotheca : polleniferous structures of (P,c,s) 

 pteridosperms : Harvard Univ. Bot. Mus. Leaflet, v. 4, no. 9, p. 153-17 2 * 



DARRAH, W. C, 1937c, Recent studies of American pteridosperms: 2 e Congres pour (P,c) 

 l'avancement des Etudes stratigraphie et de ge'ologie du Carbonifere, 

 Compte Rendu, 1935, v. 1, p. 131-137. 



DARRAH, W. C, 1938a, A new fossil gleicheniaceous fern from Illinois: Harvard (P,c,s) 

 Univ. Bot. Mus. Leaflet, v. 5, no. 8, p. 145-160. 



DARRAH, W. C, 1938b, A remarkable fossil Selaginella with preserved female gameto- (P,c,s) 

 phytes: Harvard Univ. Bot. Mus. Leaflet, v. 6, no. 6, p. 113-136. 



DARRAH, W. C, 1939a, The fossil flora of Iowa coal balls. Part 1. Discovery and (P,b) 

 occurrence: Harvard Univ. Bot. Mus. Leaflet, v. 7, no. 8, p. 125-136. 



DARRAH, W. C, 1939b. The fossil flora of Iowa coal balls. Part 2. The fructifi- (P,b) 

 cations of Botryopteris : Harvard Univ. Bot. Mus. Leaflet, v. 7, no. 10, 

 p. 157-168. 



DARRAH, W. C, 1940, The fossil flora of Iowa coal balls. Part 3. Cordaianthus : (P,b) 

 Harvard Univ. Bot. Mus. Leaflet, v. 8, no. 1, p. 1-20. 



