138 
ORGANIC REMAINS. 
and slaty rock of Brandsby. 3, 4. Lower sandstone and shale with 
plants. 5. Inferior oolite sand. 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 
valleys of the Inn and the Adige : and similar researches prove the con- 
tinuation of the lias with a large proportion of identical fossils, through 
Wirtemburg and Franconia. 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 ; it is well developed at the base of the oolites 
round the central granites of France, and in the country of Metz and 
Luxemburgh. It seems doubtful whether the marlstone has been 
clearly recognised by any of the distinguished continental observers, 
except at Banz near Coburg, where Mr. Murchison has observed it, 
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 generaliy 
traced on the continent. 
So many of the numerous fossils belonging to the lias are pecu- 
liar 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 and sand both of Yorkshire 
and Somersetshire. Gryphaea incurva, trochus anglicus, and ammonites 
Bucklandi appear to be in Yorkshire confined to the lower shale ; car- 
dium truncatum, modiola scalprum, pecten aequivalvis, and p. sublsevis, 
avicula intequivalvis, gryphtea depressa, and terebratula bidens (lineata of 
Young and Bird) are most abundant in the marlstone and ironstone 
series, whilst nucula ovum, and amphidesma donaciforme, and the am- 
monites and belemnites generally, belong to the upper or alum shale, 
and to calcareous nodules connected with it. The smaller of these 
