262 



REPORTS ON THE STATE OF SCIENCE. 



Regd. 

 No. 

 4629 

 4630 

 4631 

 4632 



4633 



4634 



4635 



4636 



4637 



4638 



4639 



4640 



4641 



4642 



4643 



4644 



4845 



4646 



Jointed Carboniferous Limestone. 1904. 

 R.Mellte entering underground channel. (?) 



) Cwm Pwll-y-Rhyd. 



) Ystradfellte. 



) ^ mile S. of Ystradfellte. 



) 1 mile 8. of Ystradfellte, Outlet of underground stream in Carboni- 



19 miles from Brecon. ferous Limestone. 1904. 



) Ysgwd-yr-Eira, 3 miles from Falls due to shale bed in Millstone Grit. 



Pont Neaih Fychan. 1902. 



) Ysgwd-yr-Eira, 3 miles from Falls due to shale bed in Millstone Grit. 



Pont Neath Fychan. 1902. 



) Afon Llia, 2^ miles N. of Falls due to hard bands in Old Red 



Ystradfellte. Sandstone. 1901. 



Waterfall due to 12-foot grit in middle 

 shales of Millstone Grit. 1904. 



Falls due to hard bands in Old Red 

 Sandstone. 1902. 



Dip valley in Old Red Sandstone. 1902. 



) Ysgwd Gwladys, ^ mile N 



of Pont Neath Fychan. 



) Nant-y-Moch, 17 miles N 



of Neath. 



) Nant-y-Moch, 17 miles N, 



of Neath. 



) Ysgwd Gwladys. 



) § mile S. of Ystradfellte 



Thin grit in shale division of Millstone 



Grit. 1902. 

 Gorge of R. Mellte in Carboniferous 



Limestone. (?) 



) Pwlldu, 3 miles N. of Pont Bedded Carboniferous Limestone along 

 Neath Fychan. fault course. 1902. 



) Sychnant Ravine, Pont Carboniferous Limestone almost vertical. 

 Neath Fychan. 1902. 



) Sychnant Ravine, Pont Flood course of Sychnant Brook. 1902. 

 Neath Fychan. 



) Sychnant Ravine, Pont Line of fault. 1902. 

 Neath Fychan. 



) Craig-y-Dinas, 1 mile from Carboniferous Limestone near overthrust. 

 Pont Neath Fychan. 1902. 



) Craig-y-Dinas, 1 mile from Curved Carboniferous Limestone. 1902. 

 Pont Neath Fychan. 



Carnarvonshire. — Photographed by C. H. B, Epps, M.A., 95 Upper 



Tulse Hill, S. W. 5/3. 



464i^ (87) Wood below road from Pen- Transgression of sill across slaty beds, 

 morfa to Brynkir, near large 1902. 

 road-metal pit. 



Photographed by L. H. CooKE, Imperial College oj Science arid 

 Technology, S. W. 5/4. 



4648 ( ) Aberllyn Mine, Llanrwst. . Stalactites grown in six years. 



Photographed by Messrs. Frith &, Co. ; presented by Professor 

 W. W. Watts. 1/1. 



4649 Llanberis. 



Slate Quarries. 



Merionethshire. — Photographed by Professor S. H. Reynolds, 

 University College, Bristol. 1/4. 



rhyolite. 1902. 



1902. 



