130 Scientific Intelligence. 
supposition that it is not the true cranium, but that it may be some bone 
or fragment not in its natural position. The size of the supposed cra- 
nium is obviously too small for lodging the brain of an animal 114 feet 
long, inasmuch as its cavity, if it had one, can exceed but little that of 
the spinal canal, which is visible in some of the vertebra.” ‘The jaw 
has been crushed by violence,” and the fragments, sometimes inverted, 
are held together by the natural matrix, in which the whole was origi- 
nally imbedded. 
Two of the cochlee of the ear of the Zeuglodon, were detected by 
Prof. H. D. Rogers,* among the loose bones of Koch’s collection. 
They are about the size of a 
small lemon, and display that 
variety of the whorled or con- 
voluted form of the cochlea, 
peculiar to the Cetacea. 
The teeth of this animal 
vary much in size and form, 
as may be seen by compar- 
ing the annexed figure with 
those lately published by Dr. 
Emmons,t from the skele- [| 
ton brought to Albany by | 
Mr. Buckley, and also with 
those published by Dr. R. W. 
Gibbes{ of South Carolina, | 
under the name of Dorudon 
serratus. The figure here 
given shows very perfectly | 
the yoked form of the teeth, 
from which Prof. Owen has 
derived the name Zeuglodon. 
It is one third less than the 
natural size. No perfect se- 
ries of the teeth of this ani- 
mal has yet been seen by a 
good anatomist, ‘‘and we are 
therefore ignorant what are 
the varieties of form which 
such a series would present, 
Two-thirds natural size, lineally. 
ms Pipieleniegeteaaemianeel toe. of Nat. Hist., Nov, 1845, p. 79 
¥ Am. Quarterly Journal of of Agriculture and es. iii, p. 228. 
sedir (of the Acad. of Nat. Sei. erage June 1845, p. 254. 
aoe 
