en ae 
i 
O. C. Marsh on Paleotrochis. 217 
mile long, two hundred to five hundred yards wide, and from 
two to five feet above high water level, This I pi, is the 
island mentioned under the name of Kamokura, by Kaempfer, 
in the year 1691, while on his way from Nagasaki to Yedo 
He describes it as follows:* ‘Off the shores of the outer ba 
of Jedo, was seen the Island of Kamokura, with high 
shores, but of which the surface was flat and wivodbedl: It was 
not above four miles in circumference, and was used like several 
other islands, as a place of confinement for disgraced noblemen. 
There being no landing-place, the boats that carry thither 
prisoners or provisions must be hauled up and let down by a 
crane.” 
North of Niphon, on the island of Yesso, terraces line the 
northern shore of T'sugar strait and Volcano Bay, and what 
has already been described in Corea, again there, but 
ap her 
.on a much grander scale. The greatest height to which I have 
been able to trace the recent action of the sea, is 1,180 feet. 
This was found on the flanks of the mountains north of Ha- 
kodadi, but when foreigners are allowed full liberty to travel 
where they please over the Japanese Islands, similar phenomena 
will undoubtedly be found at a still greater height. 
As I passed up the gulf of Tartary, I touched twice on the 
western shore of the island of Saghalien, and continued to find 
terraces to a considerable height. Again, the village of Niko- 
laifsk, at the mouth ofthe Amoor River, is situated on a bluff 
that appears to have been recently elevated from 30 to 50 feet 
above the present level of the river. Mee 
All these facts considered in connection with the dry beds of 
friths and bays along the Siberian borders of the Arctic 
and the remnants of the old gulf that once washed the eastern 
flanks of the Ural, give us some idea of how the Asiatic conti- 
nent has increased her area within the later geologic times. 
Arr. XXIV.—On the Paleotrochis of Emmons from North 
Carolina; by Prof. O. C. Marsu, of Yale College. 
In 1856, Prof. E. Emmons announced the discovery, in the 
lower “ Taconic” rocks of North Carolina, of some pecu 
fossil corals, which he ed as the oldest representatives of 
the animal kingdom on the globe, Believing them to indicate 
& new genus, he proposed for it the name of Paleotrochis, and 
gave a description and figures of two varieties which he con- 
_* Vide Hildreth’s Japan as it was and is, p. 357. 
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