1897.] 



NEW YORK ACADEMY OF SCIENCES. 



235 



Comparative Goal Series at St. Helenas and Wigan. 



St. Helen's. 



Ft. In. 



Wigan. 



Ft. In. 



Lyon^sDelf. 2 



Measures 55 



London Delf. 2 



Measures , 86 



Potato Z)e7/(with partings) 5 



Measures 41 



Earthy Coat (with partings) 6 



Measures with Coal, 2 ft... 121 



Coat (with partings) 6 



Measures 157 



St. Heten's Main Delf. 9 



Measures 9 



Cannel 2 



Measures 18 



Four-feet Coat 3 



Measures 56 



Pigeon-house Coat 2 



Measures 271 



Savenhead Higher Coal 3 



" Warrant 4 



" Main Delf. 7 



Measures 66 



Bastion^s Coat 4 



Measures 22 



Higher Roger coal 6 



Measures 123 



Sir John coal 3 



Measures 48 



Flaggy Delf 4 



Measures 78 



Lower Roger coal (with part- 

 ings) 5 



Measures (with thin coal- 

 seam) 333 



Rushy ParTc coat 4 



Measures 161 



Little Delf. 3 



Strata, principally shales. . . 300 

 Gannister beds 1800 





 

 3 

 2 

 2 

 

 

 

 10 

 2 

 

 9 

 3 

 

 6 

 



4 

 3 



Coal-seam of Red Rock Brow 4 



Riding Mine 3 



Measures 36 



Lice Yard Mine 2 



Measures 108 



Lice 4-feet Mine 3 



Measures with 3 coal-seams 150 



IneeJ-feet Mine 6 



TMeasures 71 



\ Wilcox or rCoal2ft.lliu.l 



[Furnace \ Clay ft. 6 in. 1- 4 

 Coal tCoallft. 8 in. j 



Measures 252 



Peniberton 5-feet 3Tine 5 



Measures 30 



Little Coal 2 



Measures 45 



Pemberion 4-f^et Mine 4 



Measures 387 



Wigan 5-feet Mine 5 



Measures 90 



Wigan 4-feet mine 4 



Measures 72 



Wigan 9-feet mine ( inferior ) 9 



Measures 280 



'Cannel (varying from 1 

 ft. 8 in. to 3 ft. ) aver- 

 age 2 



Measures (varying from 



Oft. to 15 ft.) ltol5 



_King coal 3 



Measures 66 



Ravin Mine (inferior) 3 



Measures with ^-//. cort?.... 168 0^ 



Haigh Yard coat 3 



Measures 150 



Bone coat 2 3 



Measures 7 8 



>S'/H«7AcortZ (Orrell 5-feet).. 3 6 



Measures 186 



A rley Mine ( Orrell 4 -feet ) . . 4 



Strata principally shales... 300? 



Gannister beds 1800 



•Memoirs Geological Survey. 

 E. Hull, 1862, p. 12. 



'Geology of the Country around Wigan," by Professor 



