Part 84

Saw-fly, larvæ, 78

Scallop fishery, 108

Scallops, 114

Sceloporus spinosus floridanus, behavior, 116

Schleswig-Holstein oyster bank described, 132

Science, better English in, 67

Scientific exploration, 63

Scientific ideas, life history, 57

Scientific investigation, methods, 56

Scientific method, 55, 56, 57

Scientific papers, composition, 66

Scientific technique, 55

Sea anemone, behavior modifiable, 105

Sea beach, associational study, 136

Sea-bottom, animal life, 63, 136 fauna and flora, 64 quantitative study of animals, 63

Sea, conditions of life in, 134 conditions of production in, 87 cycle of matter in, 87 metabolism in, 87 struggle for existence in, 123 valuation of the, 136

Seashore, animal ecology, 63, 64 animals, 146

Season, influence on digestion of cold-blooded vertebrates, 100

Seasonal succession, animals, 140 beetles, 140 butterflies, 140 Hemiptera, 141 in old forest ponds, 140 plants, 140

Sea-urchin, 99 resistance to lack of oxygen, 99 resistance to potassium cyanide, 99

Sebago salmon, internal parasites, 129

Second-hand books, dealers in, 65

Sense organ, Arthropods, effect of caves on, 101 of fish, 113

Senses of insects, 111

Sensory adaptations of cave-inhabiting bats, 112

Sensory reactions of Amphioxus, 116

Sequence of changes in environment, 104

Sessile habit, influence, 100