RHODE ISLAND 



EAST BAY, FLA 



160 MO iio ^ho 460 54o h a'o ito sio lio 4^ 6 eb ite 2Jo 320 



RESISTHNCe OF LIGAMENT TO CLOSmG, GRJiMS/CU Of MUSCLE UREA 



Figure 70. — Frequency distribution of the elastic property 

 of the ligaments in seven groups of adult C virginka. 

 The elastic property is expressed in the pulling force of 

 the adductor muscle (in g. per cm.2 of muscle area) 

 needed to counteract the action of the ligament. 



expressed in g. per cm.^ of transverse section oi 

 muscle area arranged in diminishing order: 



Peconic Bay (Fireplace oysters) 252g. 



East Bay, Fla.— C, fast tide 178g. 



Apalachicola Bay 128g. 



Chesapeake Bay, Md 99g. 



East Bay, Fla.— B, bottom 93g. 



East Bay, Fla. — A, intertidal zone 91g. 



Narragansett Bay 79. g 



Whether the values observed do actually depend 

 on ecological conditions cannot be stated without 

 further investigation. 



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THE LIGAMEXT 



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