172

ScientificIntelligence.

products, by BRUNO K E R L ; translated from the German by W.
T. BKANNT.
Second American edition, edited with extensive
additions by F . LYNWOOD GARRISON.

354 pp. 8vo. . Philadel-phia, 1889, (Henry Carey Baird & Co.).—This' standard and wellknown work on assaying appears now in its second American
edition, increased in completeness and value by the large amountof new and useful matter added by the editor. I t gives a clear
and concise statement of the methods employed in assaying.
The first quarter of the work is devoted to a general discussionof the mechanical manipulations, the chemical processes, assay
furnaces, implements and reagents, and the remainder gives thespecial methods applicable to the different metals. The figures
are models of clearness and the whole execution reflects credit
upon the publishers as well as upon the editor.
Catalogue of Fossil Fishes of the British Museum, Part I, containing the Elasmobranchii by Arthur S. Woodward, F.G.S., F.Z.S., 474 pp. 8vo, with 17 plates.
London, 1889.
La Nouvelle Guinea, Hie Notice, Le Fleuve Augusta, by Prince R. Bonaparte.
16 pp., with a map. Paris, 1887 ; and IVe Notice, Le Golfe Huon, 62 pp., withmaps.—By the same: Note on the Lapps of Finmark, Paris, 1886, 12 pp.
Glaciation of British Columbia and adjacent regions, by G. M. DAWSON (Geol.
Mag., Aug., 1888).

APPENDIX.

ART. X X I . — N o t i c e of Gigantic
Homed
Dinosatvria
the Cretaceous;by Professor 0 . 0 . M A R S H .

fromT H E remarkable reptiles which t h e writer recently described,and placed in a new family, t h e Ceratopsidai*
prove to be
more and more wonderful as additional specimens are b r o u g h tto light. T h e r e appear to b e two or three genera, a n d several
well-marked species, already discovered, and t h e object of _ t h epresent p a p e r is to notice briefly some of their characteristicfeatures so far as investigated.

OBITUARY.

J O H N P E R C Y , M.D., F.R.S.—Dr. Percy, of the Royal Schoolof Mines, the distinguished metallurgist, author of an invaluable
series of treatises upon metallurgy, died J u n e 19, 1889, at the ageof seventy-two.
MARIA MITCH ELL.—Miss Maria Mitchell, the astronomer, diedat Lynn, Massachusetts, on the 28th of June, having nearly finished her seventy-first year. The interest which her father, Mr.
W m . Mitchell, of Nantucket, had in mathematics and astronomy,
and his telescope, led t o the development of similar tastes in thedaughter. Prom the age of eighteen to thirty-eight she waslibrarian of the Nantucket Athenaeum; but her spare time wasgiven to mathematical studies and astronomical observations, andin October, 1847, she made the discovery of a comet, for which
she received a comet gold medal from the King of Denmark. In
her later astronomical work she devoted herself particularly tothe study of the satellites and surface of Jupiter. In 1865 Miss
Mitchell became Professor of Astronomy and Director of the Observatory at Vassar College, Poughkeepsie, N . Y., a position sheheld, with honor to the institution, until January, 1888.
Miss Mitchell was early elected a member of the American
Academy of A r t s and Sciences of Boston. The degree of LL.D.
was conferred on her by Dartmouth College in 1852, and by
Columbia College in 1887. On her return from Europe, where she
went in 1858 to see observatories, and met with a welcome frommany astronomers, she found a welcome back in the form of atelescope purchased for her by American friends.

Triceratops

horridus,gen. nov.

The animal described by t h e writer as Ceratops
horridus-\possesses some remarkable characters not before k n o w n in t h e
Dhiomwria.
I n addition to t h e pair of massive horn-cores on
the top of t h e skull, there is a third horn-core on t h e nose.
This is median, as in t h e Rhinoceros, a n d is placed on t h e endof the nasals, which are firmly coossified to support it.
The edentulous premaxillaries are compressed anteriorly, andare strongly coossified with each other a n d with a t h i r d bone infront, which corresponds to t h e pre-dentary bone below, t h ewhole forming a projecting beak, like t h a t of a tortoise. Over
all, there was'j evidently, a huge horny covering, like t h e beakof a bird.
The bone in front of t h e premaxillaries has apparently not
before been observed in any vertebrate, a n d m a y be called t h erostral bone (os rostrate).
I t is analogous to t h e pre-nasal
ossification of t h e pig, and of t h e
Dinocerata.
Other portions of" t h e skull show features not before seenin the D%nom%iria.
There is a h u g e occipital crest, extending
backward and outward. I n t h e present specimen, this is bent
downward at t h e sides, like t h e back part of a helmet, t h u saffording, i n life, strong protection to t h e neck.
*This Journal, vol. xxxvi, p. 477, December, 1888.
| Ibid., vol. xxxvii, p. 334, April, 1889.
AM. JOUR. SOL—THIRD SERIES, VOL XXXVIII, No. 224.—AUGUST, 1889.

,

•An—

174

0. C. Marsh—Gigantic

HornedDinosauria.

The lower jaws are massive, and were united in front by astrong pre-dentary bone. This is pointed anteriorly, and its
surface marked by vascular impressions, showing that it wascovered with horn, and fitted to meet the beak above.
The skull appears to have been at least two metres in length,
aside from the horny beak. It represents a genus distinct fromthe type of the family, which may be called Triceratops.
This interesting specimen, which has recently been received
at the Yale Museum, was discovered by Mr. Charles A.
Guernsey and Mr. E. B. Wilson, in the Laramie formation ofWyoming.
Triceratops fldbellatus, sp. nov.
A second specimen of still greater dimensions has since beenfound at another locality of the same formation, by Mr. J. B.
Hatcher. The skull, lower jaws, and a considerable portion of
the skeleton, were found together. A striking peculiarity ofthis skull is the occipital crest, which extends upward andbackward, like an open fan. Its margin was armed with a row
of horny spikes, supported by separate ossifications, some ofwhich were found in position.
The skull as it lay in the rock measured more than six feetin length, four feet in width, and the horn-cores about threefeet in height. These dimensions far surpass any of theDinosauria hitherto known, and indicate" to some extent thewonderful development these reptiles attained before their
extinction at the close of the Cretaceous.
Triceratops galeus, sp. nov.
A much smaller species is represented by various remains
probably from the same horizon, in Colorado. In this species,
the nasal horn-core is especially characteristic. It is compressed longitudinally, and its apex is pointed, and directed
well forward. It is on the extremity of the nasals, and isthoroughly coossified with them. In front, at the base, it
shows indications of union with the premaxillaries, but thisconnection was slight.
The type specimen was found in Colorado, by Mr. G. H.
Eldridge, of the U. S. Geological Survey. The known remains
indicate an animal about twenty-five feet in length.
The bison-like horn-cores figured in this Journal (vol. xxxiv,p. 324), probably belong to a member of this group, as alreadysuggested by the writer.* They were sent to him from alocality in which he had himself collected Mastodon remains
and other Pliocene fossils. As they agreed in all anatomical* This Journal, vol. xxxvii, pp. 334.

0. 0. Marsh—Gigantic

Horned Dinosauria.

175

characters with the remains of cavicorn mammals fromthat formation, they were referred to the genus Bison, under
the name B. alticomis.
The writer has since learned thatthey were found in the Denver beds, which, although regarded
as Tertiary, are probably Cretaceous. Under thpse circumstances, tliis well-marked species may be known as Ceratops
alticomis, until additional remains make certain its true nature.
Nodosaurus textilis, gen. et sp. nov.
Another new member of the Stegosauria, from a lower
horizon in the Cretaceous, was discovered several years since,in Wyoming, and is now in the Yale Museum. The skull is
not known, but various portions of the skeleton were secured.
One characteristic feature in this genus is the dermal armor,
which appears to have been more complete than in any of theAmerican forms hitherto found. This armor covered thesides closely, and was supported by the ribs, which wereespecially strengthened to maintain it. In the present specimen, portions of it were found in position. It was regularlyarranged in a series of rounded knobs in rows, and these protuberances have suggested the generic name.
Near the head, the dermal ossifications were quite small, andthose preserved are quadrangular in form, and arranged inrows. The external surface is peculiarly marked by a texture
that appears interwoven, like a coarse cloth. This has suggested the specific name, and is well shown in the cut below.

Dermal ossicles of Nodosaurus textilis, Marsh.

Natural size.

The fore limbs are especially massive and powerful, and aremuch like those of the Jurassic Stegosaurus. There were fivewell-developed digits in the manus, and their terminal phalanges
are more narrow than usual in this group. The ribs areT-shaped in transverse section, and thus especially adapted tosupport the armor over them. The caudal vertebrse are moreelongate than those of Stegosaurus, and the middle caudals
have a median groove on the lower surface of the centrum.
The animal when alive was about thirty feet in length. The
known remains are from t h e middle Cretaceous of Wyoming.
New Haven, Conn., July 24th, 1889.