CONTENTS 



Proceedings of the Twenty-First Annual Meeting of the 

 North Carolina Academy of Science Held at Chapel 

 Hill, N. C, May 5 and 6, 1922 1 



Proceedings of the Elisha Mitchell Scientific Society, 



October 11, 1921, to June 2, 1922 21 



The Search for the Ultimate Atom. J. L. Lake 35 



Twenty Years of the North Carolina Academy of Science. 



C. 8. Brimley 46 



Some Phases in the Development of Chrysemys Cinerea. 



Bert Cunningham 51 



Reaction of Methane and Also of Acetylene Upon 



Zirconium Tetrachloride. F. P. V enable and B. 0. Deitz. . . 74 



Some Phases of Structur.e and Development of Garden Pea 



AND White Sweet Clover Seeds as Related to Hardness. 



L. Edwin Yocum 76 



Variation of Protein Content of Corn. H. B. Arbuckle and 



0. J. Thies, Jr 84 



Geology of the Muscle Shoai^s Area, Alabama. W. F. Prouty ... 88 



Azalea in North Carolina. W. W. Ashe 90 



Notes on the Reproduction of Hydra in the Chapel Hill 



Region. H. 8. Everett 92 



Chemistry in Its Relation to the State Water. Supplies. 



G. F. Catlett 94 



The Laccarias and Clitocybes of North Carolina. W. C. 



Coker and H. C. Beardslee 98 



The Fruiting Stage of the Tuckahoe, Pachyma Cocos. 



Frederick A. Wolf 127 



A Key to the Fulgorid^ of Eastern North America With 



Descriptions of New Species. Z. P. Metcalf 139 



The Gasteromycetes of North Carolina. W. C. Coker and 



J. N. Couch 231 



