Id The American Geologist. July, 1893 
Soon after coming to New York, he presented to the Lyceum 
• it' Natural History an elaborate review <>!' the Later extinct flo- 
ras of North America with descriptions of new species from 
both the Cretaceous and the Tertiary. This memoir contains 
a discussion <>i' the Dakota plants iii their relations to Euro- 
pean forms of later date, togetherwith an extended compari- 
son of the Tertiary Moras found in different portions of our 
continent, the whole forming the first synoptical study of the 
later floras whieh had appeared in our country. The figures 
of the new species were published without the text in L878, as 
a- special volume by the United States Geological Survey of 
the Territories. The descriptions of the Triassic flora discov- 
ered by hi in at the old copper mines of Abiquiu were pub- 
lished with the Macomb report in 1S76. 
From this time until his last illness Dr. Newberry devoted 
much labor to study of Mesozoic plants. His last publication 
appeared in 1SS8 as an appendix to his monograph of the 
Triassic fishes; but his monograph on the plants of the Aiu- 
boy clays would have been ready for the press had he been 
able to work for a few weeks longer. His especial grief, 
when his labors were cut off so abruptly, was that the work on the 
Laramie plants, his opus magnum, was incomplete. He had spent 
years of labor on this; it had been revised again and again, 
yet in its author's estimation it needed still further revision. 
In 1S53, Dr. Newberry published some notes on "The Fossil 
Fishes of the Cliff Limestone" of Ohio; and thenceforward 
the study of fossil fishes proved equally alluring with that of 
fossil plants. His next publications were short papers in the 
Proceedings of the Philadelphia Academy of Sciences and the 
Bulletin of the National Institute; but his first extended 
work appeared in the second and fourth volumes of the Illi- 
nois survey reports, in lS(i(j and 1S70. in which, with Mr. 
Worthen as associate, he described and figured thirteen new 
genera and one hundred and forty-six new species of fishes 
from the Carboniferous. Meanwhile the Ohio survey had 
been organized and he was enabled to publish in detail much 
of the material which he had prepared upon the Devonian and 
Carboniferous lishes of that state. 
The volumes on palaeontology contain descriptions of seven- 
teen species of Devonian and fifty-four species of Carbon- 
