234 Miscellaneous Intelligence. 
be placed in the lower Tertiary or upper 1s 
most probable that the testimony of paleontologists will always 
be as conflicting as it is at present. Profe sh, one of the 
mals afford a satisfactory solution of the difficulty. ‘ Invertebrate 
remains,’ he says, ‘throw little light on the question ;’ and he is 
obliged to assume that ‘ the line, if line there be, must be drawn 
where the dinosaurs and other Mesozoic vertebrates disappear, 
early condition of the higher plants as compared with the higher 
animals. Other, and perhaps even more cient, reasons for 
ee, To way 
related, become too often fallacious guides. Another result, fore- 
t of t le 
fessor Marsh in respect of the vertebrates, is that all the Tertiary 
Sarat 
older data than the corresponding ones in Europe. This, though 
apparently supported by his conclusions that the main migrations 
of animals was from the American to the Asiatic continent (which 
he deduces from the American, as compared with the European, 
life-histories of the Edentata, Marsupialia, Ungulata, Rodentia, 
en Primates, is a ve eneralization. ” 
reference is made to “a few of the magnificent collections of veg- 
etable remains, Cretaceous and others, that have been studied and 
ace ical Survey, and in Separate wi issued under its 
auspices ;” and a series ritical remarks upon vegetable pale- 
ontology and its peculiar difficulties and liabilities follow. We 
