2 Journal of the Mitchell Society [September 



229th Meeting— November 13, 1917 

 Collier Cobb — Cave Dwellings (Did their Relation to Geolofji/. 



230th Meeting — December 11, 1917. 

 W. deB. MacNider — The Stahintu of the Acid-Base Equilibriioii of the 



Blood in Animals of Different Ages. 

 Archibald Henderson — The Role of Pascal's Theorem in Modern 



Geometry. 



231st Meeting— February 26, 1918 

 H. V. Wilson — Contributions of French Scientists as Brought out at 



the San Francisco Exposition. 

 H. W. Chase — Some Modern Tendencies in Psychological Thought. 



232d Meeting— March 12, 1918 

 W. C. CoKER — Corn {Illustrated) . 

 A. S. Wheeler — The Production of Toluol. 



233d Meeting— April 9, 1918 

 J. W. Lasley — Some Everyday Problems. 



F. P. Venable — Luminescence and Radioactivity of the Zircons. 

 P. H. Daggett — Demonstration of a New Telephone Signaling System. 



Business Meeting — October, 1918 

 The old ofi&cers were re-elected for the year 1918-19, during which 

 period the regular meetings were suspended. 



234th Meeting— April 15, 1919 



Archibald Henderson — Some Points in Gunnery for Heavy Ar- 

 tillery. 



F. P. Venable — The North Carolina Academy of Science. 



235th Meeting— May 13, 1919 



W. deB. MacNider — Influence of the Age of an Organism on Regen- 

 eration. 



A. S. Wheeler — New Napthalene Dyes. 



J. M. Bell — Investigations on the Nitrotoluenes. 



