346 O. 0. Marsh— History and Methods of 
meister’s on the same subject, 1843. Giebel’s well known 
“Fauna der Vorwelt,’ 1847-1856, gave lists of all the fossils 
described up to that time, and hence is a very useful work. 
fe Geognostica”” by Bronn, 1834-38, and the 
second edition by Bronn and Roemer, 1846-56, is a compre- 
hensive general treatise on Paleontology, and the most valuable 
work of the kind yet published. 
e researches of Ehrenberg, in regard to the lowest forms 
of animals and plants, threw much light on various points in 
Paleontology, and showed the origin of extensive deposits, 
the nature of which had before been in doubt. Von Buch, 
Barrande, Beyrich, Berendt, Dunker, Geinitz, Heer, Homes, 
The impetus ever by Cuvier to the study of vertebrate fossils 
extended over 
the 
development. This is now thought to ‘be one of the strongest 
points in favor of evolution, although its discoverer interpreted 
