Columnar cells and basement membrane, height of 925 



epithelial cells 602, 841, 1373 



Combistrep 834 



Come to surface 1025 



Commensal, inquiline 1478 



nemertean 1570 



Commensals 363, 721 



Commerce/commercial production 35, 54, 121 



Commercial abundance 336, 679, 801 



aspects of hard clam fishery 2143 



catch 40, 250 



categories 548 



clam colony 755 



diggers 155 



industry 



1552, 

 2110 



1584 



clamming 739, 





clams 1111 







concentrations 



489, 



1219 



conditions 



716 





considerations 



377 





Crustacea 



1688 





culture 406, 



638 





development 



203 





digging 504 







dredge 1584 







dredging 414 







extinction 



35 





feasibility 



1498 





feeds, availability of 641 



fisheries 336, 497, 1216, 1930 



fishermen 1731 



fishery 34, 100, 135, 152, 220, 221, 223, 266, 488, 807, 824, 957, 



1087, 1324, 1465, 1483, 1528, 1679, 1780, 2121 

 statistics 1179 



fishing 250 



industry 1475 



gear 676, 801, 2143 



harvest 205, 669, 1213 



hatcheries 1061 



importance 100, 124, 337, 734, 1123 



landings 371, 732, 1217, 1575, 1770 



mollusks 1299, 1301, 1687, 1688, 1839 



operation 652 



patent-tong fishery 1095 



potential 681 



producers 440 



production 413, 417, 548, 672, 965 



663 



