October 21, 1878. 



The President in the chair. Nine members present. 

 Mr. Nipher made some remarks on air vortices, produced by 

 aid of a whirling table. 



If a large unstoppered bottle be set in rapid rotation, the neck of the 

 bottle will induce a sharp conical whirl, the vertex of which may be made 

 to reach the bottom of the bottle. Its existence is revealed by a puff of 

 tobacco smoke blown into the bottle after it has been rotating for a few 

 minutes. If the whole bottle is filled with smoke, a dark vortex of clear 

 air will be seen descending in the bottle. 



Dr. Stevens gave an account of stone graves on the Meramec 

 river near Fenton. 



November 4, 1878. 



Mr. A. Todd in the chair. Thirteen members present. 



Dr. Chas. D. Stevens exhibited a human skull and tibia, with 

 fragments of pottery, found in a stone grave on the Meramec 

 river near Fenton. The skull possessed a remarkably low and 

 receding forehead, and the tibia showed nodes which may have 

 been caused by syphilis. 



Mr. Geo. W. Letterman exhibited a stone implement, found 

 near Allenton, the uses of which are unknown. 



Dr. F. Kolbenheyer was elected to associate membership. 



November 18, 1878. 



Dr. I. Forbes in the chair. Twelve members present. 



Mr. Silas Bent read a paper on the rotation of storms, which 

 was referred to the Publication Committee. 



Mrs. Abner Foster, of Beardstown, Ills., was elected to corre- 

 sponding membership. 



