72 Scientific Intelligence. 
Mountains, where they have spent the last two months in geolo- 
gical researches. They bring back . large number of vertebrate 
fossils from the Cretaceous and Ter rade ho Rae of the We - 
4. On Spontaneous ey ot in aw entis. —(Communicated to this 
Journal).—Among the specimens of Z. spinulifera Hall, collected 
from the St. Sak limestone in Marion County, lowa, is one show- 
ing what is probably true spontaneous fission. his is the only 
specimen showing such a character, among thousands of specimens 
of many species, which I have collected from the Palaozoic rocks 
of America, and seems remarkable in a genus so ain a 
simple and solitary. The ontiine of the specimen is such as 
faintly suggest that its peculiarity may be the result of a Pe 
of two individuals, but not only is there no limiting wall dividing 
it into two parts, there is also no impression or suture of the 
epitheca to suggest such a fusion. The specimen is of “orduae 
height, the outline of the double calyx being oblong, one diameter 
eing about twice as great as the other, There are two well 
marked septal fossettes, forming an angle of about 130 degrees 
with each other, and the other parts are developed in ip ordinary 
of violence, because the pi itheca and transverse plates are un- 
roken. Specimens showing auiiele recovery from violence, 
inflicted while the polyp was ss are not uncommon, 
Iowa State University, Aug. 7th, 1 Cc, A. WHITE. 
Voleano of Kilauea. Tea one of our residents who has 
just returned from Kilauea by the Annie, we learn that the crater 
The old 
