342 
Waldheimia celtica, Mor. sp. 
Terebratula oblonga, Sow. (T. bipli- 
cata, var. acuta, Von Buch). 
faba, Sow. 
tamarindus, Sow. 
— Puscheana, Rom. 
sella, Sow. 
Rhynchonella varians, Schloth. (?) 
multiformis, Rom. 
Renauxiana, D’ Orb. 
PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 
[Feb. 23, 
Crania irregularis, Rém. (Crania sub- 
quadratus, K. § D.). 
Serpula Phillipsi, Rom. 
antiquata, Sow. 
Pollicipes Hausmanni, Dunk. & Koch. 
Asterias (?) Dunkeri, Rim. 
Cidaris variabilis, Dunk. § Koch. 
Pentacrinus annulatus, Rom. 
Synhelia Meyeri, K. & D. sp. 
Sponges. 
The railway from Kreiensen to Holzminden, which was constructed 
between 1861 and 1864, passes along the south-western foot of the 
Hils-chain, and in a series of cuttings yields a number of valuable 
sections, which have been fully described by Dr. Brauns*. 
Underneath the “ Flammenmergel,” presenting the usual charac- 
ters and coutaining Gault fossils, occurs the “ Hilssandstein,’ a 
thick series of sands, usually soft and light-coloured, but occasion- 
ally greenish and containing an argillaceous matrix, at other times 
with veins and partings of a deep brown colour. In places, these 
sands are indurated into stone; and a valuable building-material is 
quarried from the upper part of the series. In the lower parts occur 
beds of ironstone, which are worked by open adits driven into the 
hill-side. This series of sands, which is over 300 feet in thickness, 
resembles in a most striking manner the Shanklin sands of the south 
of England and the Upper Neocomian sands of Lincolnshire. Un- 
fortunately the Hilssandstein has yielded but very few fossils, only 
a few fragments of Hamites, and one Ammonite (A. Milletianus, 
D’Orb.)? having been recorded from it. M. von Strombeck is in- 
clined to refer these beds to the Gault; but I cannot help thinking 
that they will be found to represent the upper part of our ‘“ Lower 
Greensand’—that is, the highest beds of the Upper Neocomian. 
Underneath the Hilssandstein occur beds of light-coloured tena- 
cious clay, 70 feet thick, containing Belemnites Hwaldi, Von Stromb., 
Isocardia angulata, Phil., a Nucula, and a small Pleurotomaria. 
These beds are probably on the same horizon as our Atherfield Clay 
and the ‘‘ Cement-beds” cf Speeton ; that is, the base of the Upper 
Neocomian. 
Beneath these we find beds of dark-coloured clay, 170 feet thick, 
interstratified in their lower portion with layers made up of grains of 
hydrated peroxide of iron. These strata, which rest on the Wealden, 
yield a Middle-Neocomian fauna, including :— 
Belemnites lateralis, Phil. 
Ammonites noricus, Schloth. 
—— bidichotomus, Leym.? 
Ancyloceras (Crioceras) Duvali, Lév. 
5. The Hartz—Along the northern foot of the Hartz range, 
between Harzburg and Goslar, there occur, as shown in the maps 
Terebratula sella, Sow. 
Waldheimia celtica, Mor. 
| Rhynchonella depressa, D’ Ord. 
* “Die Stratigraphie und Palaontographie des suddstlichen Theiles der Hils- 
mulde” u. s. w., Paleeontographica, xiii. p. 75 (Jan. 7, 1865). 
t This fossil occurs, according to M. Cornuel, both in the Gault and in the 
Neocomian of France. 
