1922] Proceedings of Elisiia Mitchell Scientific Society 



23 



the Caribbean, but in other parts of the world as well, and the owner- 

 ship of such harbors is a matter of immediate and strategic impor- 

 tance. 



The classification adopted, tentatively, gives us : 



I. Estuarine harbors, lagoon harbors, delta harbors, formed in 

 the main by gradational processes, but in most cases profoundly in- 

 fluenced by diastrophic action. 



II. Fjord harbors, moraine-enclosed harbors, indented kame- 

 plains, all the product of glacier action. 



III. Crater harbors, coral-reef harbors, and a combination of these 

 two, in which the reef, fringing close upon the volcanic rock, has 

 profoundly influenced the form and the commercial or strategic value 



of the harbor. 



While the effect of organic life on harbors is generally very great, 

 the influence of animal life is not always beneficial ; and the influence 

 of plants is almost wholly detrimental, leading to the accumulation of 

 sediment and the consequent shoaling of water. 



In determining the value of each harbor considered, the geological 

 and other physical features of the shore; the strength, direction, 

 range, and scour of the tides; the depth of water in the protected 

 area; the influence of prevailing and seasonal winds; the angle at 

 which the heaviest waves impinge on the coastline and their pound- 

 ing on the headlands; the slope of the foreshore; the transportation 

 of detritus to the basin and its deposition by the currents ; and the 

 width and shape of the entrance, have all been taken into account. 

 Lastly, the industrial and commercial possibilities of the hinterland 

 have often been examined into in an effort to determine whether a 

 promising harbor might some day be developed into an important 

 port. 

 Election of Members : 



The following members of the faculty were elected to Active Mem- 

 bership in the Society: Dr. H. B. Anderson, Dr. H. W. Crane, Dr. 

 F. C. Vilbrandt, Prof. G. M. Braune, Prof. H. F. Janda, Prof. E. L. 

 Mackie, Mr. C. D. Beers, Mr. J. H. Bradley, Mr. J. F. Daugherty, 

 Mr. M.A. Hill, Mr. H. F. Latshaw, Mr. G. W. Smith. 



The following students were elected to Associate Membership: 

 From the Department of Botany— J. X. Couch, F. A. Grant, Mrs. 



