136 IOWA ACADEMY OF SCIENCES. 



Oberholz coal, Broadhead. (Missouri Geol. s-ur., Iron Ores and Coal 

 Fields, pt. ii, p. 64, 1873 ) In Kay county, Missouri, the equivalent of the 

 Lexington seam. Henrietta division. 



Osage coal, Owen, (Geol. Sur. Wisconsin, Iowa and Minnesota, p. 138, 

 1852.) Name applied to very thick seams found on the Osage river and 

 on the Missouri river above the mouth of the Osage, in central Missouri. 

 The seam is really disconnected and consists of very limited pockets of 

 great thiekness— 75 feet in some cases. They may be considered as situated 

 at the very base of the Cherokee. 



Osage coal, Haworth (Kansas Univ. Quart , Vol. ill, p. 278, 1895.) in 

 Osage county, Kansas; it appears to lie in the Platte shales. 



Osage coal, Saunders. (Trans. Kansas Bd. Agri , 1872, p. 388,1873) A 

 name known widely through central Kansas for one of the principal coal 

 seams. Platte shales. 



Osage coal field. Hay. (Trans Kansas Bd. Agri , 1875, p 125, 1870 ) The 

 seam is in the Platte shales, in central Kansas. 



Osage City coal, Haworth. (Kansas Univ. Quart. Vol. Ill, p. 304 1895 ) 

 Seam in Osage and adjoining counties, in Platte shales. 



Osage river coal, King. (Proc. American Asso. Adv. Sci., Vol. V, p 174, 

 1851.) In basal part of Cherokee, in central Missouri. 



Osage river coal, Johnson. (U. S. 28th Cong;, 1st Sess., Senate Doc. 436, 

 p. 539, 1844.) Seam exposed on the Osage river, in central Missouri. Base 

 of Cherokee. 



Oswego coal, Crane. (Univ. Geol. Sur Kansas, Vol. Ill, p. 154, 1898.) 

 In southeast Kansas, a name given to a coal seam that is, perhaps, the same 

 as the Pittsburg seam of the Cherokee shales. 



Ouita coal, Winslow. (Arkansas Geol. Sur., Ann. Kept. 1888, Vol. Ill, p. 

 34, 1888.) In lower part of Arkansan series, in Pope county, Arkansas. 



Panoracoal, St. John. (Iowa Geol Sur., Vol. I, p 274, 1870.) One of 

 the lower seams of the Marais des Cygnes, in Dallas county, Iowa. 



Philpott coal, Winslow. (Ark. Geol. Sur., Ann liept. 1888, Vol. III. p. 

 33, 1888.) Near the top of Arkansan series, in Johnson county, Ark. 



Pittsburg coal, Haworth (Univ Geol. Sur., Kansas, Vol III, p. 27, 

 1898.) In the lower part of the Cherokee, in southeast Kansas. It is also 

 called the Weir City-Pittsburg heavy coal, or lower Weir City-Pittsburg 

 seam. 



Pleasanton coal, Haworth. (Kans. Univ. Quart., Vol. Ill, p. 305, 1895 ) 

 In Linn county, eastern Kansas, base of Marais des Cygnes division. 



Eich Hill coal, Winslow. (Missouri Geol Sur., Vol. I, p. 146, 1891.) The 

 leading seam mined in Bates county, Missouri. It lies in the Cherokee. 



Rulo coal bed, Broadhead. (Missouri Geol. Sur., Iron Ores and Coal 

 Fields, pt ii, p. 132, 1873 ) Name applied in northwest Missouri to a thin 

 seam, best exposed at Rulo, Nebraska which lies near the base of the 

 Atchison shales; now known to be the equivalent to the Nodaway seam. 



Secor coal. Chance (Trans. Am. Inst. Min. Eng., Vol. XVIII, p. 658, 

 1890.) Near middle of equivalent of Des Moines series, in Choctaw field, in 

 eastern Indian Territory. 



Shinn coal, Winslow. (Arkansas Geol Sur., Ann. Rept. 1888, Vol. Ill, 

 p. 35, 1888.) Near base of Arkansan series in Pope county, Arkansas. 



