436 
mcevus conveyed a very imperfect impression 
of its actual form and proportions. Several 
serious errors were committed by the re- 
storer, the most important of which was the 
implanting of two of the cervical vertebrie 
in the tail. The author, therefore, consid- 
ered it advisable to completely remount the 
animal, and this has been done by Mr. Adam 
Herman and Mr. Martin, of the American 
Museum, at an expenditure of five months’ 
time. 
The animal is placed as nearly as possible 
in a natural position. It shows that the 
feet were not plantigrade, or soled upon the 
ground, but digitigrade, as in the Tapir. 
The body is characterized by the great con- 
vexity of the back, characteristic of the 
carnivore and of all early ungulates. A 
further carnivorous feature is the great de- 
velopment of the hind quarters and of the 
tail. The disproportion between the hind 
and the forequarters is heightened by the 
extremely small size of the head, containing 
a brain which was about the size of that of 
the opossum, which has been fully de- 
scribed by Cope. 
(24) Homologies and Nomenclature of the Ele- 
ments of the Molar Teeth. By PROFESSOR 
Henry F. Ossorn, Columbia University, 
New York. 
After a brief review of the tritubercular 
theory of Cope, the writer spoke of his 
hypothesis advanced at the American Asso- 
ciation meeting in 1891, that the multitu- 
bercular teeth of the Multituberculata and 
Monotremata were also of tritubercular 
origin. This hypothesis seems now to be 
confirmed by the teeth of Gomphodontia, 
especially of the genus Diadermodon, by 
Professor Seeley in the Narvo Beds of South 
Africa, of Permian age. 
The various Gomphodonts in these beds 
present molar teeth of more or less regular 
tritubercular pattern. Related to them in 
skull structure is Tritylodon—a_ typical 
SCIENCE. 
[N. S. Vox. VI. No. 142. 
multituberculate. This indicates that from 
the trituberculate Gomphodonts Tritylodon 
and other multituberculates may, have 
taken their origin. The paper was dis- 
cussed by Professor Minot and Dr. Gill. 
(25) Modification and Variation and the 
Limits of Organic Selection. By PROFESSOR 
Henry F. Osgorn, Columbia University, 
New York, and Proressor Epwarp B. 
Pourton, Oxford University, England. 
[An account of these papers will be pub- 
lished in a subsequent issue of Scr=nce. | 
(26) Geographical Distribution of the Golden 
Warblers. By Harry G. OBERHOLSER, 
Biological Survey, United States Depart- 
ment of Agriculture, Washington, D. C. 
The so-called Golden Warblers form a 
group of some twenty-five species and sub- 
species in the genus Dendroica, and are dis- 
tributed over almostall the Nearctic region, 
together with the Antillian, Colombian and 
Central American subregions of the Neo- 
tropical. The greatest differentiation of 
forms occurs in the West Indies, where the 
distribution of many of the species is some- 
what anomalous. 
(27) Modern and Older Theories of Mimiery 
Illustrated by Butterflies of the Genus Hypol- 
ininas. By Prorrsson Epwarp B. PouL- 
ton, Oxford University, England. [To 
be published in Scrence in abstract. ] 
Wm. H. AsHmEap, 
Press Secretary. 
FIELD WORK OF THE UNITED STATES COAST 
AND GEODETIC SURVEY. 
Mosr of the reports from the field parties 
of the United States Coast and Geodetic 
Survey are now in, and itis possible to sum- 
marize the work for the fiscal year ending 
June 30, 1897. 
The operations have been, as usual, 
widely distributed, and cover localities on 
the Atlantic, Gulf and Pacific coasts, in- 
cluding Alaska. Much work has also been 
