96 TRANSACTIONS OF THE [ Fes. 20 
ism between these two forms and the two sub-divisions of 
Ungulates, it was suggested to divide the Ancylopoda into the 
Artionychia and Perissonychia. 
February 20, 1893. 
Sratep MEETING. ; 
Vice-President Dr. Bouton in the chair. 
One hundred and fifty persons present. 
Mr. Courtenay De Kats, E.M., delivered a lecture, entitled 
“Three Thousand Miles Up the Amazon,” illustrated by lantern 
views. 
An the close of the discourse a vote of thanks was tendered 
the lecturer. 
February 23, 1893. 
SpectaL MEETING. 
Section or GEOLOGY AND MINERALOGY. 
President O. P. Hunzarp in the chair. 
Mr. Kunz remarked a new discovery of topaz crystals from 
Palestine, Texas, and exhibited an electrotype of one. The 
crystals are being measured, and will be described in full 
elsewhere. Mr. Kuyz also announced the discovery of a 
meteoric stone in Phillips County, Kansas, of unusual size. 
The following papers were read : 
