180 
Trail's ACT ioi^s Texas Academy of Scieijce. 
267. Kennedy, W. 
Eeports on the Iron Ore District of East Texas. Part III. 
Description of Comities. Chapter II. Marion County. 
Second Ann. Eept. of the Geol. Snrv. of Texas, 1890, pp. 96- 
114. Austin, 1891. 
Contents :> Introduotory. Oeograpliy and Topography. Economic mate- 
rials: Iron Ores, Timber, Clays, (Analyses of Clays). Moulding Sands. 
Greensand marls. Lignites. 
“The iron ore deposits of Marion county belong to the great belt of ores 
lying in a generally northeast and southwest direction through the various 
counties composing hhe eastern division of the State. 
“These ores are chiefly of the geode, or nodular concretionary variety of 
linionite, although the other varieties, laminated and eonglomerate, are 
present in considerable quantities.’^ 'P. 100. 
268. 
Eeports of the Iron Ore District of East Texas. Part III. 
Description of Counties. Chapter III. Harrison County. 
Second Ann. Eept. of the Geol. Surv. of Texas, 1890, pp. 
115-160. Austin, 1891. 
Contents: The Iron Ore iRegion. Topography. iStratigraphy. Iron 
Ores: 1, Laminated Ore; 2, Geode or Nodular Concretionary Ore; 3, Con- 
glomerate Ore. Analyses of Iron Ores. Ferruginous Sandstones. Clays: 
I, Brick Clays or Brick Earths; 2, Eire Clays; 3, Pottery Clays; 4, Mis- 
cellaneous Clays. Building Stone. Greensand Marl. Lignite. Water 
Supply. Mineral Springs. Timber. 
“The ore region of Harrison county appears to form the remnant 
of an extensive plateau, which extended from the northern part of the 
State southward. This plateau-like region is cut off somewhat abruptly 
towards the south and northeast portions of the county, and also shows 
that a considerable amount of erosion has taken place in the northern 
part of the county. All that now remains is the narrow flat-topped ridge 
extending from the wesitern boundary of the county eastward to about seven 
or eight miles north and east of the town of Marshall.” P. 117. 
269. 
Eeports on the Iron Ore District of Easit Texas. Part III. 
Description of Counties. 'Chapter IV. Gregg County. 
Second Ann. Eept. of the Geol. SurV. of Texas,, 1890, pp. 
161-172. Austin, 1891. 
Contents : Preliminary Report on the Iron Ore Districts. Stratigraphy. 
'Iron Ores: 1. Laminated Ore. 2. Geode or Nodular Concretionary Ore. 
3. Conglomerate Ores. The Iron Ore Bearing Regions. Lignites. Build- 
ing Stones. Clays. Soils. Timber. 
“The few cursory notes taken exhibit a simiHrity of structure with the 
other oounties lying to the east and northeast. The higher grounds of the 
county are covered with a heterogeneous mixture of orange-red, yellow, 
