94 The Irish Naturalist. April, 



C. T,OCAi.lTY.— Same as B. 

 Horizon. — Parting in Main Coal. 



Stlg^marla f icoides, var. rlmosa, Goldenberg. 



1862. Stigmaria anabathra, var. rimosa, Gold., Flora vSaraep. Foss., 

 Heft 3, p. 19, PI. xiii., fig. 16. 



D. LoCAiviTY. — Sandstone grit quarry, Gubbarudda, Kilronan Parish. 



Horizon. — Mr. Ryaus informs me that this sandstone grit occupies 

 a position of from 20 to 40 feet above the coal formerly worked at 

 locality E. A seam of " Crow Coal " comes in over this quarry, 

 and is the highest proved coal in the district. ^ 



Asterocalamltes scroblculatus, Schl. sp. 



■• I am informed by Mr. Ryans that this Crow Coal is not shown on the 

 section of strata in the Geological Survey Memoir, but it occurs in the 

 60 feet of " Dark grey grits with plant remains " which the Geological 

 Survey place at the top of their Millstone Grit, The position of the 

 Top Crow Coal is from 25 to 30 feet above the Main Coal, its distance above 

 the Main C(7a;/ varying slightly in different pits. 



Mr. Ryans thinks that the section given by Sir Richard Griffith in 

 his " Geological and Mining Survey of the Connaught Coal District in 

 Ireland," presented to the Royal Dublin Society in 1818 and published 

 the same year, represents more correctly the strata with which he is best 

 acquainted. In it is also shown the position of the Top Crow Coal. 



The following is a condensed copy of Sir Richard GriflSth's section, 

 which begins at the lowest beds : — 



Ft. In. Ft. In. 



1. Limestone — thickness unknown, . . — — 



2. Black slate clay, with clay ironstone (average), 



3. Greyish-white sandstone, 



4. Black slate clay, .... 



5. Grey sandstone, .... 



6. Sandstone (Seat Rock), 



7. Fire-clay, ... 



8. Coal {Bottom Crow Coal), 



9. Greyish-white sandstone, 



10. Black slate clay, .... 



11. Sandstone, ..... 



12. Good Coal {Main Coal), .... 



13. Grey soft slate clay, .... 



14. White sandstone, .... 



15. Coal (7!?/ Crow Coal), .... 



16. Slate clay, with thin beds of clay ironstone, 



17. Blackish grey sandstone, 



18. Sandstone flag, .... 



