Pitressin 1855 



Pivers Island, N. C. 1450, 2111 



Plaice 21 



Plane table 485, 490, 507 



Planimeter 778 



Plankton 93, 337, 346, 579, 584, 1034, 1378, 1717, 2048 



abundance, anomalous , 9 9 



culture 1252 



density of 356 



feeders 1185, 1243 



organisms 1786 



populations, small 1034 



to maintain large and thriving shellfish population 1034 



Planters, public lands leased to private 1867 

 Planting, before 302 



, density of 133, 268, 299, 303, 380, 538, 540, 621 



, experimental 216, 771 



in River Test 1324 



methods 16 46 



program 1996 



, protected 41 



-recovery experiments 714 



, resistance to private 1251 



Plantings 92, 338, 499, 540, 1915 



of young clams 974 



, test 292 



, trial 621, 1285 



, unprotected 1282 



Plants 464 



and animals, ubiquitous in 770 



of spawners 1218 



, salt marsh 2048 



Plasma 2094 



extracts 333 



membrane, destruction of 335 



Plasmalogens 2226 



, structure of 2188 



Plate counts, standard 1195 



Platymonas 288, 447, 552, 558, 789, 2181 



Pleasant Bay, Mass. 203, 581 



Pleasantville, N. J. 1356 



Pleistocene 42, 1257, 1546, 1875 



shells 2080 



Pleomorphic bodies 785 

 Pliocene 423, 1257 

 Plots, planted in fenced 1282 

 Plymouth, Mass. 152 



772 



