1920] Proceedings of Elisha Mitchell Scientific Society 3 



Election of Officers: 



President — W. C. Coker. 



Vice-President — J. M. Bell. ♦ 



Permanent Secretary — F. P. Venable. 



Recording Secretary — A. W. Hobbs. * 



Editorial Committee — W. C. Coker, chairman; J. M. Bell, Collier 

 Cobb. 



236th Meeting — November 11, 1919. 

 H. V. Wilson — Some Crustacea of the North Carolina Coast. 

 F. P. Venable and D. H. Jackson — Reactions of Hydrochloric and 

 Hydrobromic Acids with Potassium Permanganate. 



237th Meeting— December 9, 1919 

 J. N. Couch — A New Species of Water Mold with Ohservations on 



Fertilization. 

 T. F. Hickerson — A New Method For Laying Out Curves in Road 

 Location. 



238th Meeting— January 13, 1920. 

 J. J. Wolfe — The Plankton of Chesapeake Bay. 



The speaker presented in brief form the results obtained in a 

 plankton survey of these waters, made by the speaker in collaboration 

 with Prof. Bert Cunningham, the object of which was to throw some 

 light on the kind and abundance of organisms that may serve as fish 

 food. The collections on which the work was based were made by 

 the U. S. Bureau of Fisheries. 



The details of collection and the methods employed in the study 

 were explained at some length. Charts and tables compiled from the 

 data gathered were presented and the conclusions drawn which may 

 be summarized as follows : 



1. The volume of matter suspended in the water bears little or 

 no relation to the number of organisms present. 



2. There is a gradual increase in volume with increasing depth 

 due in part to detritus and in part to an increase in organisms. 



3. There is a great variation in number of organisms in different 

 parts of the Bay on the same day and at the same depths, the cause of 

 which is not determined. Locations and temperature are ruled out as 

 causes. The data, too meagre as yet, point to the tides as a possible 

 explanation. 



