REPORTS ON THE STATE OP SCIENCE, ETC. 



378 



7721 (V) E. end of Chalk ridge of Isle of 



Purbeck 



7722 (8) E. end of Chalk ridge of Isle of 



Purbeck 



7723 (9) LookmgN. from Durlston Head 



7724 (10) Peveril Point, Swanage 



7725 (11) Near Peveril Point 



7726 (12) Durlston Bay 



7727 (13) Durlston Bay 



7728 (14) Durlston Head . 



7729 (15) Durlston Head and cliffs to 



the W. 



7730 (16a) Durlston Head and cliffs to 



the W. 



7731 (16b) Near Tilly Whim, Swanage. 



7732 (17) Tilly Whim, Swanage . 



7733 (18) Tilly Whim, Swanage . 



7734 (19) Tilly Whim, Swanage . 



7735 (20) Tilly Whim, Swanage . 



7736 (21) Tilly Whim, Swanage . 



7737 (22) Tilly Whim, Swanage . 



7738 (23) Dancing ledge E. of Seacombe 



7739 (25) Hounstout Cliff . 



7740 (26) Chapman's Pool and Houn- 



stout Cliff 



7741 (27) Chapman's Pool and Houn- 



stout Cliff 



7742 (28) Dungy Head and Man-of- War 



Cove, Lulworth 



7743 (29) Man-of-War Cove, near Lul- 



worth 



7744 (30) Durdle Door promontory 



from E. 



7745 (31) Durdle Door, near Lulworth, 



north face 



7746 (32) Durdle Door, near Lulworth. 



7747 (33) Durdle Door promontory, 



from W. 



7748 (34) Durdle Door Cove 



7749 (35) Durdle Door Cove 



7750 (36) Durdle Door Cove 



7751 (37) Coast W. of Durdle Door . 



7752 (38) Silton, N.W. of Gillingham . 



7753 (39) Gillingham 



7754 (40) Gillingham 



7755 (41) GilUngham 



Chalk cliffs and sea-stacks. 1910. 

 Chalk cliffs and sea-stacks. 1910. 



Differential erosion, hard bands forming 

 promontories. 1910. 



Hard band in Up. Purbeck, forming 

 point. 1910. 



Purbeck section. 1910. 



Purbeck section. 1910. 



Chert in Middle Purbeck. 1910. 



Portland Stone capped by Purbeck. 1910. 



Portland Stone capped by Purbeck. 

 1910. 



Chert beds (L. Portland Stone) con- 

 spicuous in the foreground. 1910. 



Formation of caves in Portland Stone. 

 1910. 



Portland section, showing openings of 

 quarries (so-called caves) in the free- 

 stone beds. 1910. 



Chert beds (L. Portland Stone) and free- 

 stone beds (Up. Portland Stone) with 

 'cave' above. 1910. 



Quarry (so-called cave) in Upper (free- 

 stone beds) of Portland Stone. 1910. 



Portland Stone — sea-caves and fallen 

 blocks. 1910.' 



Portland Stone — sea-caves and fallen 

 blocks. 1910. 



Undercutting of Portland Stone. 1910. 



Up. Portland freestones undercut by the 

 sea and overlain by Purbeck. 1910. 



Portlandian section. 1910. 



Kimmeridge and Portland section. 1910. 



Kimmeridge and Portland section. 1910. 



Inverted chalk in the foreground. 1910. 



The Man-of-War rock is vertical Portland, 

 cliffs on the left inverted chalk. 1910. 

 Section Portland to Wealden. 1910. 



N. face is formed of the ' Soft Cap ' 



with ' trees.' 1910. 

 The ' Door ' is formed of the caps and 



top of the Portlands. 1910. 

 Section top of Portland to Wealden. 



1910. 

 Sea-caves along thrust-plane traversing 



Chalk. 1910. 

 Sea-cave along thrust-plane traversing 



Chalk. 1910. 

 Sea-caves along thrust-plane traversing 



Chalk. 1910. 

 Chalk cliffs, thrust-plane in foreground. 



1910. 

 Corallian section. 1916. 

 Septaria from Kimmeridge Clay. 1916. 

 Septaria from Kimmeridge Clay. 1916. 

 Selenite crystals from Kimmeridge Clay. 



1916. 



1 



