1893. ] NEW YORK ACADEMY OF SCIENCES. 95 
area, and to this fact is ascribed the often noted contrast 
between its topography and that of the ‘‘ honeycomb” district 
about the south pole. 
The paper is to be printed in full in the Bulletin of the 
Philosophical Society of Washington. 
Remarks were made by Dr. Botton, Mr. Jacosy and Pror, 
Rees. 
February 13, 1893. 
Srarep MEeEerine, 
BroLoeicaL SEcTION, 
A paper on the ‘‘ Functions of the Internal Ear” was presented 
by Dr. F. S. Lez, based upon study of dog-fish, The results 
of experiments were given showing that the semi-circular 
canals are sensory organs for dynamical (rotational) equilibrium, 
otolithic parts for statical (resting) equilibrium. Each canal 
appreciates movement in its own plane, and by a definite 
functional combination of canals all possible rotational move- 
ments are mediated. This theory explains compensating 
movements of eyes, fins and trunks. The method of experiment 
was that of sectioning the branches of the acoustic nerve and 
stimulation (by rotational movements) of the swimming fish. 
In a paper by Dr. Basurorp Dean, on the Marine Laboratories 
of Europe, a series of views were shown of the stations of 
Naples, Banyuls, Roscoff, Plymouth, Arcachon, the Helder, and 
St. Andrews. 
Pror. H. F. Ossorn described the foot of Artionyx, the new 
member of the order Ancylopoda, Cope. It is distinguished 
from Chalicotherium by the character of ancle and pes, 
which present a marked resemblanca to the Artiodactyla, while 
Chalicotherium represents these structures as found in Perisso- 
dactyla. Both genera are ungulate in ancle joint, but the 
phalanges terminate in claws, and in view of the double parallel- 
