INDEX. 



-23 



Kerguelen Islands, insects of, 55 

 Kidneys, 140; of vertebrates, 123; 



of invertebiates, 123 

 Kolliker, 21 

 Kowalevsky, 21 



Labyrinth, diagram of the human 



152 

 Lamarck, 16, 26, 32; biographical 



sketch, 26 

 Lamarckism, 64 

 Lamarckian factors of evolution, 



use and disuse, 26 

 Larval development, 193; organs, 



193 

 Leaf-butterflies, 56, 57; 



" Left, "163 



Lens, 154 



Leptoplana tremellaris, 131 



Leucocytes, 106, 108 



Leuckart, 22 



Leeuvvenhoek, 14; introduced the 



use of the microscope, 15 

 Leydig's granular substance, 146 

 Life, first origin of, 167 

 Linnaeus, 10 ; biographical sketch, 



10 ; nomenclature, n 

 Linnsn system, influence of the, 



12 ; compared with the Aristo- 



telean, 13 



Liver, 127; the human, 119 

 Locomotion] among the higher 



animals, 145; organs of, 144; 



among the lower animals, 145; 



voluntary, 144 

 Lung, 130 

 Lungs, 123 

 Lymph, 87, 105, 118 ; -corpuscles, 



105-106; coloring matter, 107; 



vessels, 136 

 Lyell, 27, 30 

 Lyonet, 15-16 



Malay Archipelago, the faunal 



division of, 51 

 Malpighi, Marcello, 14, 70 

 Malpighian vessels, 123 

 Man's relation to other animals, i 

 Marrow-cavity, the, 105 

 Maturation, 175, 177 

 Meckel, 16-20 

 Medusa, germinal epithelium of, 



94 

 Meissner's corpuscles, 150 



Mesenchyme, 189, 197; occurrence 



of, 191 



Mesenteron, 125 

 Mesepithelum, 191, 197; formation 



of, 190 



Mesoblast, 197; formation of, 189 



Metagenesis, 172, 196 



Metameres, 163 



Metamerism, 164; external, 164; 

 heteronomous. 164; homono- 

 mous, 164; internal, 164 



Metamorphosis, 193, 198 



Micropyle, 178 



Mid-gut, 126 



Migration theory, the, 63 



Mimicry, 56; example of, 57-58 



Modifications through nutrition, 64 



Mollusca, 22 



Mohl, H. von 71 



Mollusks, shells of, go 



Monogony, 168 



Monospermy, 178 



Morphology, 2; animal, 68; con- 

 trasted with anatomy, 3; dawn 

 of independent observation, 15; 

 development of, 13; embryology, 

 4; its scope, 2; ontogeny, 4; 

 paleontology, 5, 25; proofs from, 

 40; scientific method, 3; zootomy, 

 its beginning, 14 



Movement, 75; in animals and 

 plants, 121 



Miiller, Fritz, 30; Johannes, 21; O. 

 F., 15 



Multicellularity, 83 



Multinuclearity, 83 



Muscle, 108; physiology of, 109 



Muscle - cells, epithelial, iio-in; 

 connective substance, no-ill 



Muscle-corpuscle, the, 86 



Muscle-fibres, smooth, no; cross- 

 striated, no, 112; the formation 

 of, 86; 109 



Muscle-nuclei, 113 



Muscular tissue, 87, 108, 117; char- 

 acteristics, 108; elements, 109; 

 homogeneous, 109; striated, 109 



Musculature, the, 145 



Mycetozoa, 73 



Myelin, 115 



Nageli, 30, 64, 65 



Natural history contrasted with 

 modern zoology, 2 



Natural selection, 52, 53; the effi- 

 ciency of, 61; objections to the 

 theory of, 6r 



Nearctic region, the, 214 



Nematodes, 98 



Neotropical region, the, 214 



Nephridia, 139, 140 



Nephrostome, 140 



Nerve-fibres, 113; gray, 115; med- 

 ullated, 115; nodes of Ranvier, 



