18 
Transactions of the Society. 
covered by an argillaceous layer corresponding to our Gault, and in 
part with the Minimus-cl&j of North Germany. 
The following table shows the relation of the Albian beds of France 
with those of Germany, as given by M. Barrois. 
France. 
Zone superieure 
Zone moyenne 
J Zone of Ammonites splendens — ' 
( “ Flammenmergel ” 
J Zone of Am. interruptus and 
| Belemnites minimus. / 
Germany. 
Upper Gault. 
Zone inferieure 
j Zone of Am. tarclefurcatus and 
( Am. 3Iillettianus. 
Middle Gault. 
The term Gault .is used in a much broader sense in Germany than 
in England. The name was originally applied to the blue clays under- 
lying the Chalk and Upper Greensand in this country ; but in Germany, 
where blue clays extend downwards to beds of Aptian age, the term 
refers to both the Aptian and Albian stages of d’Orbigny’s classification. 
The subdivisions of the Gault of North Germany (N. of the West 
Harz and Brunswick) have bjen laid clown by von Strombeck as follows, 
in descending order. 
ALBIAN STAGE. 
Upper Gault. 
1. Flammenmergel. With Ammonites ( Schloenhachia ) inflatus, Am. 
( Hoplites ) lantus , Am. (Hoplites) auritus, anti Avicula cjry- 
phseoides. 
2. Minimus-Thon. With Belemnites minimus , Am. (Hoplites) lautus , 
and Am. (Hoplites) splendens. 
Middle Gault. 
1. Clay with Am. (Hoplites) tardefurcaius. 
2. Clay with Am. (Acanthoceras) Millettianus. 
APTIAN STAGE. 
Lower Gault. 
1. White marl with Belemnites Ewaldi and Am. (Placenticeras) 
nisus. 
2. Clay with Am. (Acanthoceras) Martini and Am. (Hoplites) 
Beshayesi. 
3. Dark blue clay, poor in fossils. 
4. Dark blue tenacious clay with Belemnites Brunsvicensis * 
The Middle Gault of Germany appears to be entirely unrepresented 
in England. The equivalent to our own series is the so-called Upper 
Gault of Germany, with the Minimus- clay and the greater part of the 
Flammenmergel. 
* Neues Jahrb., 1857, p. G39; Zeitsclir. d. deutsch. Gesellsch., 1861, p. 20; also 
Kayser-Lake, Text-book of Comp. Geol., 1893, p. 293. 
