252 



INDEX 



Insects, 1 86 



Internal structures of the earth- 

 worm, 136 



Intra-cellular digestion in Hydra, 91 



Invertase in yeast, 39 



Irritability in amoeba, 51; in hydra, 

 93; in paramecium, 64 



Jordan, bacteria multiplication, 35 



K 



Karyokinesis, 209 

 Katabolism, 12 

 Kent, 77 



Kitasato and von Behring anti- 

 bodies, 199 



Lamarck, evolution, 206 



Lang, 174, 184 



Laplace, physical and physiological 



combustion, n 

 Latour, Cagniard de, fermentation, 



38 

 Lavoisier, physiological combustion, 



II 

 Leeuwenhoek, discovery of protozoa, 



68; of yeast, 37 

 Leidy, 48 

 Lenhossek. 153 

 Lesser and Taschenberg, 142 

 Leuckart, 191, 192 

 Lifeless matter in living cells, 19 

 Lipase, 40 



Living and lifeless matter, 6 

 "Lucky strikes" in evolution, 238 

 Lumbricus terrestris, 135; structures 



and functions, 131-160 

 Lygaeus, sex chromosomes, 229, 230 



M 



Macfadyen, Morris and Rowland, 



yeast, 39 

 Macrocytase, 200 

 Malaria organisms, 15 

 Maltase enzyme of yeast, 39 

 Manifestations of vitality, 16 

 Marshall and Hurst, 84, 86 

 Mastigophora, flagellated protozoa, 



54 



Maturation divisions, 213; phe- 

 nomena, 211 



Maupas, immortality, 70 



McGregor, 141, 143 



Mechanism of immunity, 199 



Medusae, sexual generation of hy- 



droids, 98 

 Melanin., 15 



Mendel, inheritance, 219 

 Mendelian principles of heredity, 



219 



Meristem of the fern,. 114 

 Meroblastic cleavage, 182 

 Merozoite, 15 

 Merychippus, 234 

 Mesoderm, in development 80 

 Metabolism, property of protoplasm, 



9, 12; of amoeba, 48 

 Metagenesis in hydroids, 100 

 Metamerism, 133 

 Metamorphosis, 182 

 Metschnikoff, theory of immunity, 



200; phagocytosis, 197 

 Microcytase, 200 

 Micro gro mia socialis, 76 

 Microhydra, 82 

 Milne- Ed wards, 177 

 Mitosis, 209 

 Monaxonic forms, 18 

 Morgan, 216, 220, 221, 222, 223, 



225, 227, 228, 229; genetics, 230; 



heredity, 235 



Morphology, subject matter, i 

 Motor response in paramecium, 65 

 Movements of protoplasm, 20; ef- 

 fects of temperature on, 24 

 Muscular contraction, 23 

 Muscular system of earthworm, 147; 



of lobster, 177 

 Mysis-stage of the lobster, 184 



X 



Naegeli, germ plasm, 208 

 Natural immunity, 198 

 Nauplius larva, 183 

 Nematocysts of hydra, 86 

 Neo-Lamarckians, 206 

 Nephridia of the earthworm, 146 

 Nephroblasts, in development, 159 

 Nerve cells of hydra, 86, 87 

 Nervous system, of earthworm, 149; 



of hydra, 93; of lobster, 179 

 Nettle cells of hydra, 85 

 Neuroblasts in development, 159 

 Neurology, subject matter, 3 

 Neurons, 155 



Nitella, stonewort, moving proto- 

 plasm, 20, 21 



Nitrobacter, nitrifying bacillus, 36 

 Nitrosomonas, nitrifying bacillus, 36 

 Nucleus, distinct from cytoplasm, 28 

 Nusbaum, experiments with amoeba, 



49 



Nutrition of hydra, 90 



Nutritive muscle cells of hydra, 88 



Nuttall and Buchner, 197 



