32 CELLULAR 



The analysis of the sap of Valonia macro- 

 fhysay which was collected at Bermuda, agrees 

 fairly well in general with that of the sap of 

 F. utricularis collected at Naples. It is therefore 

 very surprising to find that another species, V, 

 ventrkosay collected at Bermuda, differs in toto 

 from V. macrofhysa in the composition of its 

 sap. This is shown by Table I. It is evident that 

 F. ventricosa has a sap whose composition is 

 much like that of sea water. 



TABLE I 



Molecular C omfosltion Expressed as Per Cent of 



Halide (Cl+Br). 



Sap of Sap of 



Bermuda Valonia Valonia 

 sea water tnacrofhysa ventricosa 



CI -"1- Br loo.oo loo.oo loo.oo 



Na 85.87 15.08 92.80 



K 2.15 86.24 2.58 



Ca 2.05 0.288 1.36 



Mg 9.74 Trace? 2.49 



SO^ 6.26 Trace? Trace? 



Organic matter parts 



per thousand .... 1-433 i.oc) 



