^6 TRANSACTIONS OF THE [FeB. 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. 

 Stated Meeting, 



Vice-President Dr. Bolton in the chair. 



One hundred and fifty persons present. 



Mr. Courtenay De Kalb, 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. 



Special Meeting. 



Section of Geology and Mineralogy. 



President O. P. Hubbard 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. Kunz also announced the discovery of a 

 meteoric stone in Phillips Couuty, Kansas, of unusual size. 



The following j^apers were read : 



