Geographical Notices, 377 
* 
mention of its occurrence in division B, and UM. crenulaia he 
refers to no particular division. 
It can hardly be reasonable to complain of my Omission of 
Callianassa in a Check List devoted exclusively to Testacea, 
and I doubt the identification of such imperfect specimens of 
crab’s hands as he has figured. i 
I omitted Ammonites n. s. because it was neither figured 
nor described, and might be an accidental intruder among Eo- 
cene fossils, as so many Cretaceous shells have been found to 
be. Would it be fair to place the Miocene beds of Cape Fear 
river, N. C., in the Cretaceous formation on account of the 
presence of two Cretaceous fossils, Hxogyra costata and Oucul- 
lea vulgaris ? 
Mr. Gabb compares his division B to the Maestricht beds, 
but the latter contain Belemnites, Ammonites, Baculites and 
Hamites, and according to Lyell, no Tertiary species; whereas 
Mr. Gabb includes in his division B, the Tertiary genera Atu- 
ria, Venericardia, Dosinia, Pséudoliva and Ficus, His Dosinia 
elevata, however, is a species of a very different Eocene genus, 
Dosiniopsis Conrad. D. pertenuis Gabb ‘is either another spe- 
cies of Dosiniopsis or a younger specimen of elevata. D. gyrata 
18 not stated to occur in division A, and D. inflata can hardly 
© a Dosinia, Any evidence so far is wanting to prove. the 
ita in question Cretaceous, and as the group of fossils is so 
Art. XLI.— Geographical Notices. 
L Norz ox THE DIVERSITIES IN PUBLISHED ESTIMATES OF THE HEIGHT OF MOUNT 
Wasnineton, New HAMPSHIRE. 
_ THE variation, in statements pretending to approach accuracy, 
_ Concerning the height of Mt. Washington, has been before re- 
_ Marked, but it may be interesting to see, in numerical order, the 
Principal computations, and estimates given, in English feet, 
above the level of the sea. They areas follows:— 
1. 6,103, as quoted by Prof. Jacob Bigelow in an article pre- 
Sently to be mentioned, from the observations of Capt. Alden 
Te of Norwich, 
__ by a botanical party, comprising Prof. Jacob Bigelow, M.D., of 
Sc1.—Seconp Sezizs, Vi 1867. 
