IOWA ACADEMY OF SCIENCES. 
135 
Mammoth coal, Broadhead. (Missouri Geol. Sur., Rept. 1873-4, p 838, 
1874.) The thick local pocket in Callaway county, central Missouri. Base 
of the Cherokee. 
Mammoth coal, Marbut. (Missouri Geol. Sur., Yol. XU, pt. ii, p. 147, 
1898.) A local bed in the Cherokee division, deposited in Henry county, 
Missouri. 
Marais des C-ygnes coal, Swallow. (Kansas Geol. Sur., Prelim. Rep 1 ., p. 
22, 1866 ) Main coal of Marais des Cygnes, or Pleasanton formation, in 
eastern Kansas. 
Marais des Cygnes group, Broadhead. (Missouri Geol. Sur., Rept 1873-4, 
p. 124, 1874.) Name applied in Vernon county, in southwest Missouri, to 
the upper part of the Cherokee. 
Mastodon coal, Broadhead. (Missouri Geol. Sur., Rept. 1873-4, p. 338, 
1874.) A limited pocket, 80 feet thick, in Callaway county, Missouri. Base 
of Cherokee. 
Mayberry coal. Chance. (Trans. Am. Inst. Min. Eng. Yol. XVIII, p. 
655, 1890.) At top of the equivalent of Des Moines series, in the Choctaw 
field, in eastern Indian Territory. 
McAlester coal, Chance. (Trans. Am. Inst. Min. Eng., Yol. XVIII, p. 
657, 1890 ) Near middle of equivalent of Des Moines series, in Choctaw 
field, in eastern Indian Territory. 
Mendota coal, Winslow. (Missouri Geol. Sur., Vol. I, p. 57, 1891.) This 
is the Mystic seam of Iowa; and its horizon is in the Henrietta division. 
Now applied in northeast Missouri, in Putnam county chiefly. 
Mormon Ridge coal, Beyer. (Iowa Geol Sur., Yol. IX, p. 218, 1899.) In 
lower part of Des Moines series, in Boone county, Iowa. 
Mound City coal, Haworth. (Kansas Univ. Quart., Yol III, p. 305, 189“.) 
In Linn county, eastern Kansas, in median part of Marais des Cygnes 
division. 
Muchakinock coal, Bain (Iowa Geol Sur , Vol IV, p. 361, 1895 ) One of 
the most extensive seams in the lower part of the Cherokee, in Mahaska 
county, Iowa. 
Mulberry coal, Broadhead (Missouri Geol. Sur., Rept. 1873-4, p. 168, 
1874.) In Bates county, in southwest Missouri, refers to a seam near the 
base of the Marais des Cygnes division (Pleasanton.) 
Mu Iky coal, Broadhead. (Missouri Geol. Sur., Iron Ores and Coal Fields, 
pt. ii, p 46, 1873 ) Title given in Lafayette county, Missouri, to the second 
principal coal bed. 
Mystic coal, Keyes. (Iowa Geol. Sur , Yol. Ii, p.,408, 1892.) In Appa- 
noose county and adjoining country, the principal coal mined. Henrietta 
division. 
Neodesha -coal, Haworth. (Kansas Univ. Quart., Vol. Ill, p. 305, 1895.) 
One of the seams in the lower part of the Thayer division, in Wilson county, 
southeast Kansas. 
Nodaway coal, Broadhead. (Missouri Geol. Sur., Iron Ores and Coal 
Fields, pt. ii, p 398, 1873.) Name applied to the principal coal seam of the 
Nodaway river valley, in northwest Missouri. It lies about 75 to 100 feet 
above the base of the Atchison shales. 
Norman coal, Chance. (Trans. Am, Inst. Min. Eng.. Yol. XVIII, p 
658, 1890.) Near middle of equivalent of Des Moines series, in Choctaw 
coal field, in eastern Indian Territory. 
