1880. ] the United States for the year 1879. 251 
Volume v of his great series is just completed, and will, doubt- 
less, be in the hands of scientific workers within a few weeks. It 
is in two parts—really two volumes—part 1 containing the text, 
and part 11 the plates. I regret that it has not been practicable to 
obtain a résumé of the contents of this volume, but it is safe to 
say that it is a worthy companion of any one of the series which 
has preceded it, the appearance of each one of which has marked 
an epoch in the literature of American paleontology. In 1862 
Prof. Hall published in the Transactions of the Albany Institute, 
descriptions of a large and remarkable collection of Niagara fos- 
sils at the then newly-discovered locality near Waldron, Indiana. 
In 1876 he published in the documentary edition of the Twenty- 
eighth Report of the Regents of the University of New York, 
full illustrations of these fossils, but without any accompanying 
text. In the museum edition of the Twenty-eighth Report, just 
printed, Prof. Hall publishes full. descriptions of all those fossils, 
together with the republished illustrations, embracing more than 
one hundred pages of text. In March of 1879, he also read before 
the Albany Institute, “ Descriptions of New Species of Fossils from 
the Niagara Formation at Waldron, Indiana.” This work is now 
published in the form of a twenty-page pamphlet, and contains 
descriptions of upward of forty new species and one new genus. 
Ampheristocrinus, Palzeontologists will rejoice that this remark- 
able fauna of the Niagara period is at last fully before them, 
In addition to the descriptions and illustrations of the Niagara 
fossils, Prof. Hall also publishes in the Twenty-eighth Report 
just mentioned, a paper, illustrated by three large plates, entitled 
“ Notice of some remarkable crinoidal forms from the Lower 
Helderberg Group.” He here establishes the new genus Camaro- 
crinus, of which he describes three species. A part of the re- 
markable fossils upon which this paper is based have been in the 
hands of Prof. Hall for many years; and a part of them were 
lately collected in Tennessee by Prof. J. M. Safford, who read a ~ 
paper on them last summer at the Saratoga meeting of the Amer- — 
‘can Association for the Advancement of Science. Besides these 
important works, Prof. Hall has a brief illustrated ‘article on — 
the genus Plumulina in the Thirtieth Report of the New York 
tate Museum, just published, and he also read a palzon- 
tological paper at the Saratoga meeting of the American Asso- 
ciation for the Advancement of Science. The Thirty-second — 
