Dredging, costly 1312 



, dominant at most stations in transect before 1023 



effects 62, 65, 290, 508, 582, 585, 900, 957, 1251, 1366, 1887, 2220 



expenditure, annual 1001 



in deep water, permit commercial 801 



, increased 861, 862 



Moriches Inlet, N. Y. 1522 



, no biological reason to restrict power 1842 



or deposition of spoil, damage from 1867 



filling 450, 632, 657, 658, 894, 993, 2220 



vs bullraking, power 54, 673 



handraking, power 674 



Dribbling 842 



Drilling, duration of 279 



Drills 1522 



, did not control 804 



Drop, period of 231, 233 

 Droplets, liquid 322 

 Droughts 40 

 Drug action, pattern of 1973 



, antitumor 464 



metabolism 1652 



Drugs 465, 774 



Drum Inlet, N. C. 56, 414 



Dry 102 



Duck farm wastes, treat 10 3 3 



farms 356, 658, 927, 1033, 2031 



Ducks 281 



Dunaliella 447, 835, 1427, 1929, 2181 



Duodenum 220 2 



Duxbury Bay, Mass. 544, 847 



Dye, high concentrations of 642 



, metabolic breakdown of 642 



, reactions at various concentrations of 642 



tracer 146, 391 



Dyes for marking 106 5 



, industrial 774 



, vital 1331, 2179 



Dysentry 2089 



EC50 1554 



EDTA 982, 1297, 2069, 2093, 2127 



-inhibited 1718 



EGTA 936 

 EPN 263 



681 



