94 



Prof. J. Prestwich. 



I 



Number in 

 list, Table I. 



II 



Name of colliery and place. 



Ill 



Depth of pit 

 or shaft. 



XV 



Distance of 

 station of 

 observation 

 irom snatt. 







Eng land — continued. 



Feet. 



Yards. 





113' 



South. Wales, Aberdare,Tochriw Dowlais*. 



1103 



66 







>j » >» 



1320 



466 







5> J> >» 



628 



2000 





114 



„ „ Dowlais (ironstone)' 



371 



160 







» » » 



ODD 



485 





115 







oU 







)» >} i> ' 



988 



1600 





152 





855 







22 





540 



•• 





226 





1140 



4301 





221 





1250 



1340 





228 



Dye Cross, Dudley • . . . . 



700 









Belgium. 









14© 





761 











1017 







141 





1656 











761—1656 











1017—1656 







214 



" " 



o/y 



* • 







1013 







215 





1194 



1312 







1456 











1194—1456 











1361 







216 





1548 



1531 









1680 



766 









104a — loot) 









France. 









145 





126 











658 











126—658 







24 





325 



197 





25 





561 







23 





630 



69 





