Part 79

Oyster bed, 6 overfishing, 131 succession of animals on, 131

Oyster culture, 6, 18, 131

Oyster, development, 112 food, 112

Oyster grounds of South Carolina, natural, 111

Oyster habitat, 111

Oyster industry of North Carolina, 112

Oyster reef affected by storms, 112

Oysters, eaten by Fulgur, 110 eaten by Sycotypus, 110

Painted turtle, discriminative ability, 109

Papers, composition of scientific, 66

Papers, preparation for publication, 65, 68

Papilionidæ, seasonal succession, 140

Paragraphing, 69

Parasites, 132 a function of habitat, 129 American Rhynchophora, 76 burrowing bee, 134 influence of hibernation on animal, 130 influence of migration on animal, 129 Sebago salmon, 129

Parasitic castration in insects, 130

Parasitic environment, 126

Parasitic fauna, relation to habitat, 129

Parasitic interrelations of bee community, 139

Parasitism, 129 insect, 129, 130 organic, 126 social, 126

Park trees, insects affecting, 74

Parks for ecological study, 38

Parrots, 109

Passenger pigeon, 117

Pathological condition, 26

Pathological conditions, artificial and, 27

Pecten irradians, economic value, 108 growth, 108 habits, 108 life history, 108

Pennsylvania, crawfish, 116 lizards, 129 serpents, 129 turtles, 129

Phase rule, 85