ON PHOTOGRAPHS OF GEOLOGICAL INTEREST. 



263 



Regd. 

 No. 



4657 (38) Mynydd-y-Gader, Dolgelly. 



4658 (39) 



4659 (40) 



4660 (41) 



4661 (43) 



4662 (42) 



4663 (44) 



4664 (45) „ „ 



4665 (29) 



4666 (30) 



4668 (46) „ ,. 



4669 (47) 



4670 (48) 



4671 (49) 



y- 



4672 (50) 



4673 (51) 



4674 (52) 



4675 (53) 



4676 (55) 



4677 (54) 



4678 (56) 



4679 (57) W. of Graig, Dolgelly 



4680 (58) 



4681 (59) 



4682 (60) 



11 I. 



S. of western end, Mynydd- 

 Gader. 



S. slopes, Mynydd-y-Gader. 

 Mynydd-y-Gader 



Banded rhyolite. 1902. 

 Weathered tuff. 1902. 

 Weathered coarse tiifl'. 1902. 

 Coarse tuff. 1902. 



Frost-weathering of diabase. 1902. 



j» )» )> 



Veins in diabase. 1902. 



)» If 



End of vein in diabase. 1902. 

 Relations of bedding and cleavage in 



grits and slates. 1902. 

 Erratic block. 1902. 

 Erratic of diabase on rhyolite. 1902. 

 Erratic of diabase. 1902. 

 Erratic resting on coarse tuif. 1902. 

 Erratic. 1902. 



Glaciation of tuff and greenstone. 1902. 

 Glaciated country. 1902. 

 Roche moutonnee. 1902. 



Photographed by Pictorial Stationery Co. and presented by Professor 



W. W. Watts. 



4667 ( ) Cader Idris. 



Colour photograph of main cliff over 

 Llyn-y-Gader. 



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



University College, Bristol. 1/4. 



4683 (23) Corndon, from the E. 



4684 (22) Corndon from the S.B. 



Undercut and overcut sides. 1904. 

 Undercut side of Laccolite. 1904. 



Radnorshire, — Photographed by Professor S. H. Reynolds, University 



College, Bristol. 1/4. 

 4686 (28) Llandrindod . . . Large erratic. 1904. 



SCOTLAND. 

 Argyllshire. — Photograp)hed by A. T. Metcalfe, Southwell, Notts. 1/4. 



4686 (G.S. 1) Carsaig, Mull. 



4687 (G.S. 2) Ross of Mull. 



4688 (G.S. 4) Near Salen, Mull. 



Jurassic rocks capped by basalt. 

 Wave-worn granite. 1904. 

 Granophyre Hills. 1904. 



1904. 



* Photographed by Harold Preston, Alverne House, Penzance. 5/3. 



Columnar basalt. 1905. 



4690 ( ) Staffa, from Fingal's Cave. 



4691 ( ) Fingal's Cave, Staffa. 

 4698 ( ) 



It 



<i 



