Geology. 421 
pond in form with the corresponding deciduous teeth, but are of larger 
size. Finally, a portion of the lower jaw of an age specimen of Dicho- 
8. On a Range of Volcanic Islets to the Southeast of Japan; by 
Mr. A. G. Finptay, (Proc. Brit. Assoc, August, 1856 ; th., No. 
1503.)—The recent importance of our commercial relations with Japan, 
n-high- 
way between Nippon and the Bonin Islands of great interest. The dan- 
being, by investigation, reduced to five or six rocky islets of very singular 
character. The islands nearest to Japan, the Broken Ids, Falsisyo, the 
ery e 
south of this are, perhaps, Tibbit Island of 1844, then an island or reef 
of pointed rocks, discovered by Coffin in 1825, afterwards announced as 
r 
31° 53’ N., long. 139° 59’ E., was discovered in the Dutch corvette, the 
Koerier, August 24, 1849, and are of a very dangerous character. «ean- 
hette Is] m ‘Jes further South, is doubtful. Smith Island, 
hette Island, twenty three miles further <n Sik Bimith-of the Heber, 
5°. The volcanic nature of these remarkable rocks. lying near the me- 
Ndian of 140° E. indicates a continuation of those immense voleanic 
Japanese island, and thence to the well-known range 0 spiracles in he 
now quiescent. To the 
n the two capitals of Ja- 
