382 D.C. Gilman—Geographical Notices. 
that of the great Atlantic plateau. Over most parts of it the sticky, 
adhesive lobigerina mud exists in large proportion, and in certain 
But in all the specimens which had been brought up by Lieut. Chimmo, 
there was an entire absence of every thing but the very finest and softest 
” 
by Capt. v. Koschkull, may be interested in having their atten- 
tion called to a capital map of that mountain range, which 18 
given in Petermann’s Mittheilungen, ii, 1869. The accompany- 
ing notes give the following as the elevations of the four most 
important peaks of the proper or Great Caucasus : 
bruz, 18,572 Eng. feet 17,426 Paris feet: 
Koschan-tau, 17,123 ape 16,066 . 
Dych-tau, 16,928 « 15,883 —~ * 
Kasbek, 16,546 « 16,025 ° 2 
___ The Ararat is almost equally hich with the D ch-tau, wid: 
_ 16,916 Eng. feet} or 15,872 sly parma: 
= 
