Chap. IV. § 2.] 



LOWER DAMUDA GltOUP. 



63 



Brought forward ...2,293 2 



56. Light-gray conglomerate sandstone, containing white pebbles of 



rounded quartz ... ... 



57. Gray argillaceous shale 



58. Black argillaceous shale 



59. Superior coal found in excavation No. 12 ... 



60. Gray arenaceous under-bed, containing large concretions of are- 



naceous ironstone from 3 to 4 feet diame'ter, and 1 foot thick 



61. Black and gray argillaceous shale 



62. Brown sandstone 



63. Carbonaceous shale 



64. Light-gray sandstone, quartzose, micaceous, and hard 



65. Hard bright coal, found in shaft No. 11 



66. Gray argillo-arenaceous under-bed 



67. Gray sandstone 



68. Black and gray argillaceous shale ... 



69. Gray sandstone, fine-grained, micaceous ... ... ... 



70. Gray and brown sandstone conglomerate 



71. Coal 



72. Carbonaceous shale 



73. Coal 



74. Under-bed 



75. Sandstone, gray and brown, passing into conglomerate near 



the top 



76. Argillo-arenaceous shale 



77. Inferior coal 



78. Sandstone 



79. Coal 



80. Black argillaceous shale bed 



81. Brown and gray sandstone conglomerate 



82. Inferior coal in excavation No. 8 ... _ ... 



83. Arenaceous under-bed 



84. Argillo-arenaceous shale 



85. Light-gray conglomerate 



86. Coal seen in brook near shaft No. 7 



87. Gray under- clay 



88. Slaty coal 



89. Hard bright coal 



90. Gray arenaceous under-bed 



91. Brown conglomerate 



92. Light-gray argillaceous shale 



93. Brown conglomerate 



Carried over 



15 







3 







4 







1 



4 



5 







6 







2 







4 







3 











8 



1 



4 







4 







6 



6 







60 











1 







8 



1 



10 



.. 30 







... 9 











7 







4 







5 



3 







... 162 







... 10 







4 







.. 6 







.. 38 







.. 6 







2 







1 











6 



.. 6 







.. 18 







.. 7 







.. 25 







.2,735 



10 



