IOWA ACADEMY OF SCIENCES. 101 



as developed in west-central Missouri immediately south of the Missouri 

 river. 



Lower coal series, Swallow, 1866, (Geol. Sur. Kansas, Prelim. Rept., p. 

 26, 1866.) Corresponds very nearly to the Cherokee shales in southeastern 

 Kansas. 



Lower Pleasanton shales, Haworth. (Univ. Geol. Sur. Kansas, Vol. 

 Ill, p. 40, 1898.) Applied to the lower half of the upper member of the Des 

 Moines series. 



Manhattan stone, Prosser. (Bull. Geol. Soc. America, Vol. VI, p. 37, 

 1894. ) A local name of quarrymen, near Manhattan, Kansas, applied to the 

 Cottonwood limestone. The name is preoccupied. 



Marais des Cygnes coal series. Swallow. (Kansas Geol. Sur., Prelim. 

 Rept., p. 22, 1866.) Although duplicated in part, the Marais des Cygnes 

 corresponds essentially to the Pleasanton shales of the later Kansas geolo- 

 gists. The formation is typically exposed in Miami county, Kansas. 



Marmaton formation, Haworth. (Univ. Geol. Sur. Kansas, Vol. Ill, p. 

 92, 1898. ) Proposed for the upper two members of the Des Moines series, 

 the Henrietta and Marais des Cygnes (Pleasanton). Bain's Appanoose 

 has essentially the same delimitation. 



Marmaton shale, Keyes. (Proc. Iowa Acad. Sci., Vol. IV, p. 24, 1898.) 

 Suggested for the median shale member of the Henrietta. 



Mound group, Broadhead. (Missouri Geol. Sur., Iron Ores and Coal 

 Fields, pt. ii, p. 196, 1873.) The upper part of the Marais des Cygnes 

 (Pleasanton) in Cass county, Mo. 



Mound Valley limestone, Adams. (Univ. Geol. Sur. Kansas, Vol. I, p. 

 23, 1896.) Applied to the median heavy limestone of the Bethany as it 

 occurs in southern Kansas. 



Mound Valley shales, Haworth. (Univ. Geol. Sur. Kansas, Vol. Ill, p. 

 47, 1898.) In southern Kansas, applied to the shales separating the lower 

 and middle main limestones of the Bethany. 



Muscotah series of limestones, Knerr. (Univ. Geol. Sur. Kansas, Vol.1, 

 p. 144, 1896.) Title of some thin limestone beds occurring west of Atchison, 

 and about 150 feet above the Plattsmouth limestone. Perhaps equivalent 

 to the Forbes. 



Neodesha sandstone, Haworth. (Univ. Geol. -Sur. Kansas, Vol. I, p. 131, 

 1896.) Applied to the massive sandstone occurring in the upper part of the 

 Thayer shales, especially at Neodesha and Thayer, Kansas. 



Oread limestone, Haworth. (Kansas Univ. Quart., Vol. II, p. 123, 1894.) 

 Here applied, without definition, to the lower part of what appears to be 

 the Plattsmouth. It was subsequently defined. 



Osage shales, Haworth. (Univ. Geol. Sur. Kansas, Vol. Ill, p. 67, 1898.) 

 Title of the lower part of the Atchison (Wabaunsee). 



Osage City shale, Haworth. (Kansas Univ. Quart., Vol. Ill, p. 278, 

 1895.) Name given to the lower portion of the Atchison (Wabaunsee). 



Oswego limestone, Haworth and Kirk. (Kansas Univ. Quart., Vol. II, 

 p. 108, 1894.) A term for the lower member of the Henrietta formation. 



Ottawa limestone, Haworth. (Kansas Univ. Quart., Vol. II, p. 121, 

 1894.) Name incidentally used for the Stanton (Plattsburg) limestone in 

 Franklin county, Kansas. Not defined. 



