Part 73

Lake as a microcosm, 123, 131

Lake beach, habitat, 147 débris, Sarcophagidæ with relation to, 147

Lake fauna, associational study, 140 correlated with vegetation, 140 habitats, 140

Lake, fish associations of a, 147

Lake habitat, changes in, 87 fish, 147

Lake, respiration of an inland, 87

Lake shore, animal associations, 134

Lakes, gases dissolved in waters, 87 plankton investigations of Danish, 140

Land animal communities, controlled by vegetation, 90 vegetation and control, 124, 133

Land animals, ecological succession, 133 origin, 148

Land forms, changing, 86

Land habitats, changes, 86

Land tortoise of Florida, insect guests, 135

Larval habits of tiger beetles, 118

Larvæ, catalogue, 77 classification of Lepidopterous, 73 Coleopterous, table of families, 75 Donaciinæ, natural history, 109 Lepidopterous, 73, 78 saw-fly, 78

Lateral-line organs of fish, functions, 116

Law of response to strain, 85

Laws of change, orderly sequence, 79

Laws of regulation, in behavior, 105 in insect oscillations, 123 in metabolism, 85

Laws of sequence, in adjustment between animal and environment, 122 in animals, 92, 93 in environment, 79 within the animal, 92

Leech, behavior, 121

Lepidoptera, and temperature extremes, 99 field tables, 74 larvæ, 73, 78 larvæ, classification, 73 transformations of described, 73

Leptinotarsa, behavior, 119 habits, 119 instincts, 119

Leptothorax Emersoni Wheeler, ethological observations, 120

Life and chemistry, 97

Life centers, geographic, 99

Life histories, aquatic Nematocerous Diptera, 75 fish, 112 insects, 73 insects and allied invertebrates, 70 insects, in Lintner’s New York State entomologist’s reports, 74 mammals, 118 Odonata, 76 physiological, 17 salamanders, 119 tiger beetles, 118

Life history, common clam, 114 humble-bee, 119 quahaug, 108 scientific ideas, 57