sands was undertaken. The pressure cells ordered for the Rayleigh disc 
direction and force indicator are being considered in connection with the 
Beach Erosion Board manometric settling tube. An kmery settling velocity 
tube has been constructed and set up for laboratory use, and a more 
complete unit is being ordered from the Federal Inter-Agency Sub-committee 
on Sedimentation. 
Correlation of Waves and Longshore Currents - The extensive (twice 
daily observations at three points along Mission Beach for a year and a half) 
longshore current data is being arranged in a usable form for statistical 
and analytic analysis. It is hoped that analysis of this data with the 
simultaneous observations of waves, winds, tides, rips, etc., may lead to 
a better method of current prediction---or at least to a means of telling 
the error (or variability) that may be involved in present prediction methods. 
Equilibrium Profile of Beaches = The report on this study has been com= 
pleted and is under review by the staff. 
Study of Effects on Beach Profile of Varying Wave Periods - The report 
on this study has been completed and is under review by the staff. 
46 
