CORNISH POST-TERTIARY GEOLOGY. 33'. 



contained trunks of alder, oak, and hazel (the latter frequently with 

 nuts and twigs attached), also apparently yew; and remains of red 

 deer, oxen, human skulls, and cut branches. The peat rested on 

 very tenacious clay, and continued down to low-water mark, being 

 overlain by a quartz pebble beach, rising to the level of the highest 

 spring-tides. 



Maen Forth, near Falmouth. 

 The Rev. J. Eogers ^ observed the roots of an oak in peaty matter, 

 Avith leaves and roots of Iris pseudacorus beneath the surface of the 

 sand below high-water mark, on Maen Forth Beach. The roots 

 were in clay, resting on the solid rock. Pieces of peat were washed 

 ashore during gales. 



Forthleven, West of Loo Fool. 

 The Eev. J. Eogers - mentioned the occurrence of stumps of oak 

 and willow, apparently in situ, imbedded in vegetable mould, under 

 10 feet of sand, at Forthleven, a little below low-water mark. 



Mounts Bay. 

 The Mounts Bay Submerged Forest has been noticed by Leland ; 

 by Dr. Borlase,^ who says that the trees occurred 300 yards within 

 full sea-mark, and at high tide had at least 12 feet of water over 

 them ; by Dr. Boase,* who inferred, from the occurrence of nuts and 

 leaves in the vegetable mould, that the submergence had taken place 

 in the autumn. I select Mr. Game's ° account as giving the best 

 general description : "A mass of decayed plants, full of small 

 branches, twigs, and leaves, generally of hazel or birch, forming a 

 spongy brown substance, occurs under 4 inches to 1 foot of fine 

 sand, on the east of Fenzance, continuing for half a mile from east 

 to west, and being in its most southern i3arts, as far as ascertained, 

 20 to 30 feet below spring-tide level. Numerous prostrate tree 

 trunks, amongst which oak was noticed, were imbedded in brownish 

 earth full of woody fibre, beyond the pile of rocks near the Chyan- 

 dower Eiver." 



1 Trans. Roy. Geol. Soc. Corn. vol. iv. p. 481. 



2 Trans. Roy. Geol. Soc. Corn. vol. i. p. 236. 



3 Trans. Roy. Soc. for 1757, p. 80. 



* Trans. Roy. Geol. Soc. Corn. vol. iii. p. 131. 

 5 Ibid. vol. vi. p. 230. 



