166 ORGANIC REMAINS. 



fidence I beg to suggest that the section of the north-east coast of Skye, 

 (Geological Transactions, New Series, Vol. II. page 360,) would better 

 coincide than it seems to do at present, with the series of the Yorkshire 

 coast, if the following designations should prove correct : No. 1. upper 

 sandstone and shale, (coaly grit of Smith.) 2. Bath oolite and slaty 

 forest marble. 3, 4. Lower sandstone and shale with plants. 5. In- 

 ferior oolite. 6. Upper lias, shale, and calcareous nodules, (perhaps 

 attenuated and altered, as happens also in Cleveland.) 7. Marlstone 

 series, resting on the lower shale. 



M. Charbant's description of the strata in the vicinity of Lons le 

 Saunier, leaves no doubt of the general conformity of the lias beds, at 

 the base of the Jura limestone, with those of England. (See De la 

 Beche's Geological Memoirs.) Professor Buckland's valuable remarks 

 (Annals of Philosophy, June, 1821) have extended this result to the 

 vallies of the Inn and the Adige : and similar researches prove the con- 

 tinuation of the lias through Wurtemburg and Franconia, and under 

 the denomination of Muschelkalk along the north side of the Erzege- 

 birge. (Conybeare and Phillips, page 169.) Mr. De la Beche (Geological 

 Transactions, New Series, Vol. I. page 81) has traced the lias on the 

 coast and through the interior of Normandy ; and Dr. Boue (Edinburgh 

 Phil. Journal, Vol. XII. p. 145) has shewn the similarity between the 

 organic contents of this formation on the continent and in England. It 

 seems doubtful whether the marlstone has been recognised by any of 

 these distinguished observers, and as this rock is known to become 

 thinner and less consolidated toward the south of England, perhaps we 

 may infer that it cannot be traced on the continent. 



So large a portion of the numerous fossils belonging to the lias, are 

 peculiar to it, that it seems unnecessary to particularize them. Plagios- 

 toma giganteum is less characteristic of the formation than has been 

 supposed, for it occurs in the inferior oolite both of Yorkshire and 

 Somersetshire. Grypheea incurva, trochus anglicus, and ammonites 

 Bucklandi, appear to be in Yorkshire confined to the lower shale ; car- 

 dium truncatum, modiola scalprum, pecten aequivalVis, and pi sublasvis, 



