Long Branch, N. J., and caustic curves and over- 

 lapping wave trains are found. More accurate techniques 

 for use after a sufficient number of orthogonals have 

 been constructed are described, and evidence is given 

 confirming theoretical deductions of this paper. It 

 is shown that further theoretical and practical studies 

 are needed, and specific suggestions for future research 

 are given. 



NO. 22 - March 1951 



II-B "The Source, Transportation, and Deposition of Beach Sedi- 

 C ment in Southern California" by John W. Handin 



Detailed description of beaches and coastal physiography 

 from Carpinteria to Point Fermin, California is pre- 

 sented. Details of submarine geology and wind and wave 

 forces are also given. A detailed petrographic analysis of 

 beach, stream and dune sands is presented and sources of 

 beach sediments discussed. Discussion of the trans- 

 portation and deposition of beach sands (littoral drift) 

 is also included. 



NO. 23 - May 1951 



II-B 'The Use and Accuracy of the Emery Settling Tube for Sand 

 Analysis" by D. M. Poole, W. S. Butcher and R. L. Fisher 



The accuracy of the Emery Settlins Tube for the analysis 

 of sand particles has been investigated. This method is 

 more rapid than dry sieving and gives equivalent, or 

 settling, diameters rather than geometric diameters. 

 The paper confirms the reproducibility of the results 

 obtained from the settling tube, the close correlation 

 with sieve analysis, and gives a detailed recommended 

 procedure. For size ranges of most beach sands the 

 accuracy of the two methods Is nearly the same. 



NO. 24 - April 1951 



II -A "The Accuracy of Present Wave Forecasting Methods with 



Reference to Problems in Beach Erosion on the New Jersey 

 and Long Island Coasts" by Willard J. Pierson, Jr. 



A study is made to attempt to determine whether or not 

 wave forecasting techniques can yield the observed 

 values of wave parameters within the choices possible 

 for selecting forecasting parameters under limitations 



84 



