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76  Contributions  to  the  geology  of  Texas,  by  Dr.  Ferdinand  Roemer.  Am. 
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78  The  Primordial  zone  of  Texas,  with  descriptions  of  new  fossils,  by  B.  F. 
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79  Prelim.  Kept.  Geol.  and  Agr.  Survey  Texas,  by  S.  B.  Buckley.  Austin, 
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80  First  Ann.  Kept.  Geol.  and  Agr.  Survey  Texas,  by  S.  B.  Buckley.  Houston, 
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81  Second  Ann.  Kept.  Geol.  and  Agr.  Survey  Texas,  by  S.  B.  Buckley.  Houston, 
1876,  pp.  96. 
82  Note  on  the  Paleozoic  rocks  of  central  Texas,  by  Charles  D.  Walcott.  Am. 
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83  A  partial  report  on  the  geology  of  western  Texas,  by  Prof.  Geo.  G.  Shumard. 
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84 A  preliminary  report  on  the  geology  of  the  State  of  Texas,  by  John  W. 
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85  Preliminary  report  on  the  geology  of  the  central  mineral  region  of  Texas.  by 
Theo.  B.  Comstock.     Idem,  pp.  239-391. 
86  Report  on  the  geology  and  mineral  resources  of  the  central  mineral  region 
of  Texas,  by  Theo.  B.  Comstock.  Second  Ann.  Rept.  Geol.  Survey  Texas,  1890, 
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87  Beitrage  zur  Geologie  und  Petrographie  der  Apache  (Davis)  Mountains. 
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88  Pre-Cambrian  fossiliferous  formations,  by  Charles  D.  Walcott.  Bull.  Geol. 
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55721— Bull.  360—09 48 
