404 PROF. EHRENBERG ON FOSSIL INFUSORIA. 
The animals which I found in the above-mentioned fossils are the 
following species. 
I, Nine species in the stone from Franzensbad. 
1. Navicula viridis, as chief mass; 2. N. gibba; 3. N. fulva; 
4. WN. Librile, all freshwater animalcules, very common in the 
neighbourhood of Berlin ;—5. NV. viridula; 6. N. striatula ; 
both sea animalcules now living: the first I know of only from 
the Baltic, near Wismar; the second from near Havre in France, 
and in the mineral water of Carlsbad ;—7. Gomphonema pa- 
radoxum ; 8. G.clavatum: both species now common near 
Berlin ;—9. A species of Gaillonella, G.varians? of which I 
have hitherto seen only fragments. 
II. In the peat-bog of Franzensbad I found, around the Kieselguhr, 
five species: 
1. Navicula granulata, as the most usual form, not occurring in 
the Kieselguhr; 2. NV. viridis, rare; 3. Bacillaria vulgaris? ; 
4. Cocconeis undulata; both sea animals ;—5. Gomphonema 
paradoxum (clavatum?), still found near Berlin. 
Only two forms are common to the turf and the Kieselguhr, which 
is found in it, and which thence probably owes its origin to a different 
period. 
III. I found in the Kieselguhr of the Isle of France several species : 
1. Bacillaria vulgaris? as chief mass ; 2. B. major, an unknown 
species, but perhaps allied to the former, which is a well- 
known sea animaleule; 3. A small Navicula, perhaps the in- 
fant state of WV. fulva; 4. N. gibba; 5. N. bifrons, a still living 
species, occurring rarely near Berlin. 
IV. The Bergmehl of Santa Fiora, or San Fiore, of Klaproth’s col- 
lection contains nineteen different species: 
1. Synedra capitata, new species, as chief mass, between which 
2. S. Ulna, an animalcule living both in fresh and sea water ; 
—3. Navicula inequalis; 4. N. capitata ; 5. N. viridis ; 6. N. 
gibba ; 7. N. pheenicenteron; 8. N. Librile; 9. N. Zebra; all 
freshwater animalcules ;—10. JV. viridula, a sea animalcule 
from the Baltic;—11. N.granulata; 12. N. Follis; two yet un- 
known or extinct species;—13. Cocconeis undulata, a sea ani- 
malcule ;—14. Gomphonema paradoxum; 15. G.clavatum ; 
16. G. acuminatum; freshwater animals from Berlin;—17. 
Cocconema cymbiforme, a freshwater animalcule; 18. Gail- 
lonella italica, new species; 19. Siliceous needles of a sea 
Spongia, or freshwater Spongilla. 
V. In the Polirschiefer of Bilin, specimens of which M. Weiss had 
_ himself collected there, I found four species: 
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