18 Journal of the Mitchell Society [Septentber 



Further in all cases the color deepens very noticeably in succeeding 

 hours. If no coloration occurs in the diffused light of the laboratory 

 within two hours the cymene is pure. 



The following papers were read but no copies or abstracts fur- 

 nished : 



Some Biological Aspects of the Tidal Zone Region of the North Car- 

 olina Coast. Z. P. Metcalf. 



Recent Growth and Depletion of Sea-heaches on the North Carolina 

 Coast. Collier Cobb. 



Electro-end osmosis of Clays. Thorndyke Saville. 



Effect of Borax on Plant Growth and Notes on a Method for its Quan- 

 titative Determination in Fertilizers. Oscar J. Theis, Jr., and 

 H. B. Arbuckle. 



Dyestuff Situation in the United States. R. F. Revson. 

 Agricidtural Geology (Read by title). John E. Smith. 

 The Wing Venation of the Heteroptera. Herbert Spencer. 

 Vitamines — A Review. W. A. Withers. 



Further Studies on the Melting Points of the Nitrotoluenes. J. M. 

 Bell. 



A List of the Cicadellidae Taken at Swannanoa, North Carolina. 7i. 



P. Metcalf and Herbert Osborn. 

 The Conductivity of Nonaqueous Solutions. Paul Gross. 

 Behind the Barrier Beaches from Boston to Beaufort. Collier Cobb. 

 Some Neiv Types of Distillation Apparatus. Paul Gross. 



R. W. Leiby, Secretary. 



