Papers read in Section C, British Association, 1870, 523 



"In Madeira and the Canary Islands, streams of lava of sub- 

 aerial origin are divided by bands of red laterite, probably ancient 

 soils formed by the surface-decomposition of lava currents ; many of 

 these owe their red colour to atmospheric action on the oxide of iron, 

 but others are lurnt into a red brich hy the overflowing of heated lavas. 

 These red bands are sometimes prismatic, the small prisms being at 

 right angles to the sheets of lava." 



I believe the only plausible alternative to my view is that these 

 red clay bands are either greatly decomposed and rearranged ash or 

 lava accumulations, but if this were the case, should we not expect 

 to find a certain intermixture of organic remains, for corals are 

 found actually projecting into the ashy matter of the first section, 

 and are most plentiful on the same horizon as this cavity and in the 

 beds above the toadstone. E. Wilson. 



nsroTiciBS oip i^ie^i^otSj^. 



Beitish Association foe, the Advancement of Science. Fortieth 

 Meeting. Liverpool, 1870. Papers Eead in Section C. 

 (Geology.) 



President. — Sir Philip de Malpas Grey Egeeton, Bart., M.P., F.R.S., F.G.S. 



G. H. Morton — On the Glaciated Condition of the Surface of the 

 Triassic Sandstone around Liverpool. (See page 525.) 



JDr. BicTcetts — Section of Strata between Huyton and St. Helens. 



J. Thomson — Eeport of Committee for Photographing and prepar- 

 ing sections of the Corals of the Mountain Limestone. 



W. S. Baily — Eeport on Fossils of the Kiltorcan Quarries. 



W. S. Mitchell — Fourth Eeport of the Committee Appointed to Inves- 

 tigate the Leaf-beds of the Lower Bagshot Series of Hampshire. 



G. Maw — On the Evidences of Eecent Changes of Level on the 

 Mediterranean Coast. 



W. C. Williamson — On the Organization and Affinities of the Calamites 

 of the Coal Measures. 



W. Carruthers — On the History and Affinities of the British Coniferae. 



Prof. Duncan — Eeport of Committee on British Fossil Corals. 



Dr. Leith Adams (read by G. Busk) — New Species of Elephants. 



W. Pengelly — Sixth Eeport of the Committee for the Exploration of 

 Kent's Cavern, Devonshire. 



Frof. Hull — On the Extension of the Coal Fields beneath the newer 

 formations of England. 



H. Woodward — Notes on Fossil Crustacea. 



Dr. Bryce — Eeport of Committee on Earthquakes. 



G. A. Lehour — On the Tertiary Coal Fields of Southern Chile. (See 

 page 499.) 



Prof. Phillips — Notice of Mammalian Jaw from the Stonesfield Slate. 



Prof. StoTces — Eeport of Haematite Committee. 



Prof. HarTcness and H. A. Nicholson — On the Green Slates and Por- 

 phyries of the Lake District. 



