CONTENTS 



Proceedings of the Twenty-Second Annual Meeting of the 

 North Carolina Academy of Science 1 



Proceedings of the Elisha Mitchell Scientific Society, 

 October 10, 1922, to May 8, 1923 28 



Dedifferentiation in Hydroids and Ascidians. H. Y. Wilson. . 40 

 Soil Treatments to Overcome the Injurious Effects of Toxic 

 Materials in Eastern North Carolina Swamp Lands. 



M. E. Sherwin - 43 



Contractile Vacuoles in Amoebae — Factors Influencing 

 Their Formation and Rate of Contraction. Mary Jane 



Hogue 49 



Variation of Protein Content of Corn. Paper II, H. B. 



ArhucMe and 0. J. Thies, Jr ■ 56 



Density of the Cell Sap of Plants in Relation to Environ- 

 mental Conditions. C. F. Korsiian -. .- 63 



The Research Program of the Appalachian Forest Experi- 

 ment Station. E. H. Frothingham 70 



Chemical Industries in North Carolina in 1922. Frank C. 



Vilhrandt - - 76 



Dormancy in the Seeds of the Persimmon. H. L. Blomqnist . . 83 



Notes on the Teaching of Biology. H. L. Blomquist ... - 86 



The Common Names of Some Trees. W. W. Ashe ■ 89 



Some Points in the Bud Development of a Simple Ascidian, 



Ecteinascidia turhinata Herdman. C. Dale Beers 92 



Breeding Habits of Limnoria at Beaufort, N. C. R. E. Coker. . 95 

 Development of the Fruit-Body of a New Parasitic Rhizo- 



pogon. H. R. Totten. . .- .- 101 



Notes on Shrubs of the Southeastern States. W. W. Ashe .... 110 



A New Species of Thraustotheca. W. C. Coker and J. N. 



Couch . . .112 



Historical Sketch of the Elisha Mitchell Scientific Society. 



F. P. YenaUe -■ -. .-- 117 



William Cain : Mathematician and Engineer. Archibald 



Henderson ...... 123 



The History and Methods of Science. A. H. Patterson 131 



Strawberry Leaf Scorch. F. A. Wolf ■■• .141 



A New^ Downy Mildew on Soybeans. 8. G. Lehman and F. A. 



Wolf 164 



The Geasters of the United States and Canada. W. C. 



Coker - 170 



