Hard clam stocks increasing 657 



tissue 130, 1793 



was dominant organism 1408 



clams, density of 467, 507, 680, 681, 733, 778, 965, 1482, 1734, 192! 



had lowest uptake rates and concentrations 1507 



, insignificant numbers of 800 



no trace of 1914 



shell clam 174, 181, 236, 316, 378, 415, 583 

 times 499 



Hardiness 874 



Hardshell clam fishery of Maryland 1679 



Hares, sea 384 



Harpswell, Me. 1918 



Harvest, annual 467 



areas, control of 382 



averaged 1668 



, bonanza type 205 



by summer visitors 1251 



, participants have adequate share of 669 



phytoplankton 440 



, total 416, 417 



Harvestable areas 290 



Harvested 1328 



beds 713 



, larger biomass might be 1693 



, measured, and planted annually 1096, 1097 



Harvester, hydraulic escalator shellfish, its effects 2162 



Harvesters, escalator 1087 



, hydraulic escalator (see also dredges) 2172 



Harvesting/harvest 41, 49, 75, 106, 108, 148, 155, 204, 206, 211, 234, 337, 

 357, 398, 519, 712, 719, 993, 1249, 2072 



areas rotated annually 1312 



, controlled 505, 1312 



, effects of 1366 



, hand 861, 1656 



, heavy 512 



, illegal 673, 1213, 1552 



market clams 970 



, mechanical 1552, 1556, 2047 



, non-commercial 1213 



prohibited 1447 



restricted to two days per week 1312 



, selective 547 



, surf clam 1893 



, threatened by intensive 713 



, types of 1314 



Harvests, steadily decreasing 910 



712 



