~ 1876.] Proceedings of Societies. T5T 
PROCEEDINGS OF SOCIETIES. 
© ACADEMY or NATURAL Scrences, Philadelphia. — July 25th. Dr. 
Allen called attention to a photograph of a Brahmin bull, exhibiting the 
growth from the back of the animal of a supernumerary anterior extrem- 
ity. The peculiarities of the limb were described, and its importance 
from an embryological point of view was alluded to. Mr. Martindale 
stated that the bull spoken of by Dr. Allen had been removed to New- 
ark, but that there was still on exhibition a heifer having two anterior 
limbs growing from the shoulders. 
Mr. Meehan called attention to a peculiar diurnal motion he had ob- 
served in Liatris pyenostachya when throwing up its flower stems: the 
top was always curved over towards the east in early morning, nearly 
erect at midday, and towards the west at sundown. For commercial 
purposes he had thousands of plants growing, and the habit was uniform 
in all. The motion was evidently vertical and not in a horizontal direc- 
tion, and this still left it open to ascertain how the point turned towards 
the east for its early morning start. As soon as the flower spike ap- 
proached its full growth the motion ceased. 
Professor Cope spoke of the development of the upper incisors in a 
species of fossil camel. The species had been called Procamelus hetero- 
dontus, but it had recently been found that the true Procamelus does not 
present a complete series of upper incisors. The stages of growth of the 
teeth of Procamelus were described, and the genus having the perfect 
series of incisors was named Protolabis. The name Protolabis heterodon- 
tus was proposed for the type. A new species of Procamelus was indi- 
cated under the name /issidens. 
A letter from Joseph Menges, of Frankfort-on-the-Main, applying for 
assistance to enable him to explore the region of the Red Sea, was, on 
motion, referred to the council. 
Professor Kerr called attention to a peculiar feature of surface geology 
of North Carolina. No well-characterized evidence of the glacial age 
had been found as far south as South Carolina, but in the foot-hills east 
of the Blue Ridge occurred peculiar superficial deposits, the nature of which 
had been for some time uncertain. The gold of North Carolina occurs 
in gravel beds as in California, at the upper surface of the rock upon 
which such sandy deposits lie. The beds alluded to were evidently not 
moved by water, and the material of which they are composed shows a 
peculiar succession of forms of deposits, proving them to be not moraines 
or the result of glacial action. Angular pebbles exhibiting no evidence 
of attrition are found some distance below the surface, towards the upper 
part of the hills. Lower down these pebbles are more rounded and are 
nearer the underlying rock. It was believed that the earth of the de- 
posits had been frozen and had moved as if it were a glacier. The same 
characteristic deposit had been observed in the neighborhood of West 
Market Street, exhibiting features tending to strengthen the theory ad- 
