800 0. C. Marsh—New Observations on the Dinocerata. 
White House, from the conspicuous snow-field, about a mile in 
horizontal breadth and having a slope of half a mile, which 
covers its eastern front. This snow-mass is by far the largest 
we have found in the mountains of Colorado, and distinctly 
marks and characterizes the peak, even as seen from the Front 
Range, 80 miles away. Yet further south, five and ten miles 
respectively, are two 14,000-foot peaks, of dark red sandstone, 
which we call Maroon Mt. and Castle Peak. 
so many high peaks, t 
between 14,000 and 14,500 feet. So far as I now know, there 
to the top of such lofty peaks. The 8-inch theodolite and tn 
weighing about 50 lbs., have sometimes to be carried on 
back up ascents of 3,000 to 5,000 feet, over the steepest rocks. 
By October Ist, the primary triangulation will have been © 
tended over 80,000 square miles. 
a rr ce 
Arr. XXXIV.— New Observations on the Dinocerata ; by 
O. C. MARSH. 
Many additional remains of the Dinocerata have been ” 
tained by the Yale College expedition during the past ee 
mer, and many doubtful points cleared up regard t0 
structure of these animals, 
1st. The dental formula of this order, so far a8 DOW knowl 
+ canines * molars at x 2596 
2d. The premaxillaries are not united in front, and. 
much in form in different species. but 
3d. The lower jaw has no true proboscidean font om 
resembles that of the Hippopotamus, especially in the gre ae 
ward extension of the rami below the diastema. vided 
Ath. It is extremely probable that both sexes were 
with horns., 
is as follows :—incisors 
a ak 
