234 Scientific Intelligence. 
te ith, 
Tertiary beds of Fort Clarke on the Upper Missouri; a species 
of Sassafras, a genus not hitherto found in our Lignite Tertiary, 
though represented in the Cretaceous and in modern times, dedi- 
cated in the paper to Mr. Selwyn; several Poplars, as Populus 
a 
ae 5 j 
Hazel, a chestnut-leaved Oak apparently new, some Coniferous 
trees, as Sequoia Langsdorfii, an ally of the giant trees of Cali- 
br 
riassic, Jurassic, Oretaccous and Tertiary Formations of this 
Continent ; b A. M ‘ i 
gr: 
geologists. e work is most complete paleontologically, as this 
is the particular direction in which the author bas labored. The 
volume is not properly a history, but rather like a scrap-book in 
the collection of its material, The arrangement under the grand 
ven. By 
improving it in these respects and making it complete in its list 
of papers, the author would increase greatly the value of the 
volume. On one topic—that of the drift—the work departs very 
widely from a history, and the references are much more defective 
than elsewhere. He says that “he has undertaken to overthrow 
the Glacial hypothesis.” As his knowledge of the subject eX 
out, 
Glacialist, though his gbjections to some of the views whic he 
ag os of o Plea theory are likely to stand. 
8. Species o erygotus from the Water-lime group near 
Buffalo.—Mr. J. Poutman has described in the Bulletin of the 
like nearly all others who have studied the subject, a ae . 
. hi 
