J. G. H. GODFREY ON THE GEOLOGY OF JAPAN. 549 



17 feet bind. 

 6 feet strong shale. 

 3 feet shale. 



3 feet inter laminated coal. 

 5 feet strong shale. 



( 7 feet 6 inches coal. 



1 foot parting. 

 I 3 feet 6 inches coal. 



Thick coal ■{ 10 inches parting. 



I 4 feet 3 inches coal. 

 I 3 inches parting. 

 ^ 8 inches coal. 

 20 feet bind. 

 3 feet coal. 



After this follow about 600 feet more of these measures, of which 188 feet 

 are obscured. 



Mieke Coal-mines. 

 General dip S.W., 2° to 3°. 



50 to 100 feet sandstone. 



(12-18 inches sandstone intermixed with coal. 

 6 feet coal. 

 12 inches shale. 

 5-6 feet shale. 



f 10-12 inches soft coal. 



II. Seam \ 5-6 feet coal. 



[ 2-3 inches shale. 

 20 feet sandstone. 



III. Seam 1-1£ foot stony coal. 



50 feet sandstone. 



IV. Seam 3 feet bad coal. 



Karatsu Coal-mines. 

 General dip S.W., 6°. 



20 feet sandstone intermixed with bind. 



C 2 inches coal. 

 2 feet seam \ 4 inches bind. 



[ 14 inches coal. 

 2 feet 6 inches conglomerate. 



( 1 foot coal. 



I 10 inches bind. 



5 feet seam i 22 inches coal. 



7 inches bind. 



\ 14 inches coal. 

 ? feet sandstone. 



The comparison between these sections shows the great changes 

 which the coal formation has been subjected to in this district. 



The total production of coal in Japan has been computed by me 

 for the year 1874 to be 390,000 tons, but for the last year (1877) will 

 amount to at least 500,000 tons, of which about 80 per cent, are 

 derived from the western coal-fields. 



(6) Copper. — Copper-bearing veins exist in great number in 

 Japan. The most common ore is copper-pyrites ; other ores, such 



