XVlii CONTEXTS. 



Page 



8. The Origin of the British Trias. By A. R. Horwood 614 



9. On a Buried Tertiary Valley through the Mercian Chalk Range 



and its later 'Rubble Drift.' By Rev. A. Irving, D.Sc., B.A. 616 



WEDNESDAY, SEPTEMBER 7. 



1. The Pre-Oceanic Stage of Planetary DBveloponent, and its Bearing 



on Earliest History of the Lithosphere and the Hydrosphere. 

 By Rev. A. Irving, D.Sc., B.A 617 



2. Report on the Erratic Blocks of the British Isles (p. 100) 617 



3. Fifth Report on the Crystalline Rocks of Anglesey (p. 110) 617 



4. Report on the Faunal Succession in the Lower Carboniferous Lime- 



stone (Avoniau) of 'the British Isles (p. 106) 617 



5. Report on the Excavation of Critical Sections in the Paleozoic 



Rocks of Wales and the West of England (p. 113) 617 



6. *Interim Report on the Microscopical and Chemical Composition of 



Charnwood Rocks 618 



7. Report on the Igneous and Associated Rocks of the Glensaul and 



Lough Nafooey Areas, Cos. Mayo and Galway (p. 110) 618 



8. Report on the Correlation and Age of South African Strata, &C. 



(p. 123) 618 



9. Report of the Geological Photographs Committee (p. 142) 618 



10. Report on the Fossil Flora and Fauna of the Midland Coalfields 



(p. 827) 618 



11. Report on Topographical and Oeolo<,'ical Terms used locallv in 



South Africa (p. 160) .* 618 



Section D.— ZOOLOGY. 



THURSDAY, SEPTEMBER 1. 



Address by Professor G. C. BourtNE, M.A., D.Sc, F.R.S., President of 



the' Section 61 9 



FBI DAY, SEPTEMBER 2. 



Joint Meeting with Section K: — 



1. The New Force, Mitokinetism. By Professor Marcus Hartog, 



D.Sc 628 



2. A Cytological Study of Artificial Parthenogenesis in Strongy- 



loemtrotus purpuratus. Bv Edward Hindle, Ph.D., 

 A.R.C.S .* 630 



1. Note on the Biology of Teleost and Elasmobranch Eggs. Bv W. J. 



Darin. D.Sc .' 631 



