61^ 



MARVIN ALLUM 

 (Slide FG-16) 



Again keeping the eggs gently agitated to 

 keep them in suspension and evenly distributed throughout 

 the water mass, a small sample is withdrawn-- 



(Slide FG-17) 



--placed on a microscope slide and examined under the 

 compound microscope. 



(Slide FG-18) 



And the round objects that you see here on 

 the screen are freshly fertilized oyster eggs. I don't 

 see any there yet that have begun to divide. 



(Slide FG-19) 



The feed samples then that have been brought 

 in by plane are divided into three one-liter samples. 

 Each sample then is run in triplicate. 



(Slide FG-20) 



The remaining portion of the field sample 

 is tested for sulfite waste liquor by the Pearl-Benson 

 Index, the salinity is determined and chlorophyll is also 

 determined. It was found during some of the earlier 

 studies that certain amounts of chlorophyll did seem to 

 have some effect on the larvae. To insure that we were 

 not looking at results due to extra amounts of chlorophyll, 

 chlorophyll was routinely done as a check. 



