xvi List of Plates 



FACING 

 FACE 



NATURAL GROWTH OF " COON OYSTER " CLUSTERS BETWEEN 



TIDE LINES IN SOUTH CAROLINA 232 



SHELLS OF ARCA WITH YOUNG OYSTERS ATTACHED . . . 262 

 SINGLE OYSTERS ATTACHED TO SHELLS OF A SMALL CLAM . . 262 

 HOLES OF LONG-NECK CLAMS VERY THICKLY SET IN A BEACH 282 

 LONG-NECK CLAMS DUG FROM BENEATH ONE SQUARE FOOT OF 



A FLAT . . . '. ". . .282 



INCREASE IN SIZE IN ONE YEAR OF CLAM ONE INCH LONG 



WHEN PLANTED . . / . . 304 



INCREASE IN VOLUME IN ONE YEAR OF CLAMS IN AN EXPERI- 

 MENTAL BED WITH SLIGHT CURRENT 304 



Box SUSPENDED FROM A RAFT NEAR A CLAM FLAT FROM 



MAY 15 UNTIL OCTOBER 15 OF THE SAME YEAR . . .312 

 GROWTH OF MYA IN Two YEARS ON i-ioo OF AN ACRE OF A 

 BARREN FLAT 312 



