SYNONYMY 205 



Martin in Maryland; Homewood and Tionesta 

 of Orton in Ohio ; not named in Kentucky, where 

 it is frequently shale ; not reached in most of the 

 Tennessee field; Homewood of I. C. White, "salt 

 sand" of drillers, in part, in West Virginia. 



Mount Savage coal bed Tionesta of I. C. White, Alton Upper of Ashburner, 



(J. P. Lesley.) Mount Savage of Stevenson in Pennsylvania ; 



Mount Savage of Lesley and others in Maryland ; 

 Tionesta, Wartman, and Newland of Orton, Boli- 

 var of Newberry in Ohio ; number 4 and Hunne- 

 well of Crandall, Lower Splint of Hodge in Ken- 

 tucky; coal P of Bradley in northeastern Tennessee; 

 Lower Splint of Campbell and Stevenson in south- 

 western Virginia; Coalburg (?) in southern West 

 Virginia. 



Mercer shales Upper portion becomes sandstone in central part of 



(I. C. White.) Kentucky, persists as such in Kentucky, northern 



Tennessee, and southwestern Virginia, where it is 

 the Gladeville sandstone of Campbell. 



Mercer limestones Present in only a small part of northwestern Pennsyl- 



(I. C. White.) vania; present, but irregularly, in Ohio almost to 



the Ohio river ; the Lower is the Blue or Zoar of 

 Newberry ; absent in other parts of the basin. 



Upper Mercer coal bed Upper Mercer of I. C. White, Middle Alton of Ash- 



(I. C. White.) burner in Pennsylvania; Bruce of Newberry, 



Strawbridge of Read, Bedford of J. T. Hodge, Upper 

 Mercer of Orton in Ohio ; not definitely recognized 

 in Kentucky, but may be coal 3b of that state and 

 unnamed bed under Gladeville sandstone in south- 

 western Virginia ; not recognized in Tennessee and 

 southern West Virginia. 



Lower Mercer coal bed Apparently the persistent bed. Lower Mercer of 



(I. C. White.) I. C. White, Lower Alton of Ashburner, probably 



Alpha of northern Anthracite field, coal A of Ber- 

 nice in Pennsylvania ; coal 3 of Newberry, blue 

 limestone coal, Flint Ridge, Lower Mercer of 

 Orton in Ohio; Elkhorn, Jellico, Peach Orchard, 

 McHenry of Crandall, Twin bed of Lesley in Ken- 

 tucky; Bradley's coal O in northern Tennessee; 

 represented in southwestern Virginia by either the 

 Kelley or Imboden of Campbell and Stevenson, or 

 perhaps by both of those beds; Winnifrede of 

 Kanawha and southern West Virginia ; eroded 

 from most of Tennessee and northern Alabama. 



Connoquenessing sandstone. Upper and Lower of I. C. White, separated by Qua- 

 (I. C. White,) kertown shales and coal bed, Kinzua of Ashburner 



in Pennsylvania ; Massillon of Newberry and others 



XXVII— Bull. Geol. Soc. Am., Vol. 15, 1903 



