168 



INDEX 



Marine vegetation and animal 



associations, 89 

 Marsh habitats, mollusks, 137 

 Maryland farm, birds of a, 125 

 Massachusetts shell-fisheries, 108 

 Mating instincts, of walking-stick, 



119 

 Mating period of spiders, habits, 



115 



Mayfield Cave fauna, 143 

 Mayfly nymphs, keys, 75, 76 

 Meadow ants, 149 

 Media, changes in, 88 

 Medical zoology, bibliography, 129 

 Metabolism, 92, 93 



fish, 100 



in the sea, 87 

 Method, 



comparative, limitations, 56 



genetic, 56 



historical, 56 



scientific, 55, 56, 57 

 Methods, 



biometric, 63 



of homing pigeons, 113 



of investigation, energy, agent 

 and process, 56 



of microscopic anatomy, 62 



of study, 14, 39 



of studying birds, fish, mammals, 



39 

 Microcosm, 4 



lake as a, 123, 131 

 Microscopic anatomy, methods, 62 

 Migration, 



influence on ajiimal parasites, 

 130 



of birds, 109 



of birds, as a response, 109, 110 

 Migratory plant formations, 88 

 Mimicry, 42 



of insects of South Africa, 128 

 Missouri, 



insects, 77 



insects, index of reports on, 77 

 Modifiability of behavior of Hy- 



dr aides Dianthus V., 106 

 Modifications, 



of behavior, 93 



of behavior by experience, 106 



Molluscan associations, local, 137 

 Molluscan succession, associations! 



study, 137 



Mollusk' fisheries of Massachu- 

 setts, 108 

 Mollusks, 



associations, 138 



collecting, 58 



ecology, 147 



effect of environment, 100 



habitats, 138, 145, 147 



habitats in fresh water, 147 



of Louisiana, marine food, 114 



of Skokie Marsh area, ecology, 



137 



Mongoose, 28 



Morphology, experimental, 95 

 Mosquitoes, Dragonflies vs. 72 

 Moth, Yucca, 142 

 Moths, 



drinking habits, 119 



reactions, 106 

 Mourning-cloak butterfly, photo- 



tropism, 116 



Movements, physiology, 107 

 Mucus, function of, in shell-fish, 



114 



Mud snail, behavior, 111 

 Multiple working hypotheses, 55 

 Muscidae, Acalyptrate, 78 

 Museum exhibit of American birds, 



ecological, 145, 146 

 Museums, 



determination of specimens at, 52 



relation to ecology, 22 



use of ecological ideas, 145, 146 

 Mussels, 



artificial propagation of fresh- 

 water, 114, 115 



diseases, 119 



eaten by Fulgur, 110 



eaten by Sycotypus, 110 



enemies, 119 



pearly fresh-water, enemies and 

 diseases, 119 



pearly fresh-water, habits, 119 



pearly fresh-water, protection, 1 19 



reproduction of fresh-water, 114, 



115 

 Mutation theory and ethology, 22 



