196 DEL 



34. Subordinate Rocks, or Red Sandstone group. — Geol. Rep. N. 

 York, Febr. 1838.— Sill. Am. J. XXXVI. p. 68. 



35. Report on the Geologj' of Cornwall, Devon and West Somer- 

 set, with numerous plates, etc. Lond. 1839, 8°. 



36. Lettre sur la Decouverte d'Erapreintes de Plantes dans des 

 Schistes subordonnes a la formation de la Grauwacke. — Bull. Soc. 

 Geol. Fr. VI. p. 90. 



37. On the Formation of the Rocks of South Wales and South- 

 western England. — Mem. Geol. Surv. G. Brit. I. p. 1. 



38. On the Connection between Geology and Agriculture in Corn- 

 wall, Devon and West Somerset. — Journ. Agr. Soc. Engl. III. 

 p. 21. 



39. Address to the Geological Society, 1848. — Journ. Geol. Soc. 



IV. p. XXI. 



40. Sur la Temperature et la Profoudeur du lac de Geneve. — Bib- 

 liotheque Universelle, XII. p. 118.— Edin. Phil. Journ. 1820, 

 p. 107. 



De la Beche (H. T.) and Conybeaee (W. D.). 



1. On the Discovery of a new Fossil Animal, forming a link between 

 the Ichthyosaurus and Crocodile, together with general Remarks 

 on the Osteology of the Ichthyosaurus Trans. Geol. Soc. ser. 1, 



V. p. 559.— Isis, 1823, IV. Litt. Anz. p. 219. 



De la Beche (H. T.) and Playfair (Lyon). 



1. First Report on the Coals suited to the Steam Navy. — Parlia- 

 mentary Paper, 1848. — Mem. Geol. Survey of Great Britain and 

 Mus. Practical Geology, London, II. 



De la Beche (H. T.), Playfair (Lyon) and Smyth (VVa- 

 rington). 



1. Reports on the Gases and Explosions in Collieries. — Parliament- 

 ary Paper, 1847. — Address to the Geological Society, 1849, 

 Journ. Geol. Soc. V. 



Delabigarke (P.). 

 1. A Treatise on Silkworms.— Tr. N. York, IL p. 172. 



Delafield (Jos.). 



1. Geological Remarks on the Lake Regions. — Sill, Am. Journ. 

 IV. 2, p. 282. 



