_B. coli communis_, 36; _typhosus_, 36; _fluorescens_, 334
Bacteria, growth of, 15 ff., 29, 71 ff.; specificity in, 41 ff.
Balanced salt solutions, 307-317; theory of, 317; and adaptation, 331 ff.
Bancroft, F. W., 70, 125, 127, 264, 269 ff.
Bernard, Claude, 2 ff., 26, 159, 350, 354, 355, 358
Blood relationship, established by transfusion, 53, 54 ff.; precipitin reaction, 55 ff.; anaphylaxis reaction, 61 ff.; hemoglobin crystals, 64 ff.
Blood serum, precipitin reaction of, 54 ff.; effect of, on unfertilized eggs, 101 ff., 124
Blowfly, heliotropism of larvæ of, 265 ff.
Boveri, Th., 8, 126, 128 ff., 134, 138 ff., 150 ff., 186 ff., 209 ff., 246
_Bryophyllum calycinum_, 153, 160 ff., 177
Bunsen-Roscoe, law of, 11, 256 ff., 261, 263, 264
Cell division, 15, 29, 129 ff.; suppression of, 113 ff.
Cells, nutritive media of, 15 ff; immortality of, 30 ff.; migrating, 44; mesenchyme, 51 ff., 130 ff., 147, 155 ff.
_Cerianthus membranaceus_, 171 ff., 188, 361
Chromosomes, rôle of, in sex determination, 198 ff.; theory of Mendelian heredity, 233
Crystals, differences between living organisms and, 14 ff.
Cytoplasm of eggs as future embryo, 8, 9, 70, 126, 151 ff.
_Daphnia_, 210, 262, 279, 280, 282, 306, 312
Death, 349 ff.; natural, cause of, 364, 369
Decidua formation induced by corpus luteum, 157-158
Determination of sex, in bees, 208 ff.; in phylloxerans, 210; in _Bonellia_, 215
Divisibility of living matter, limits of, 148-151
Driesch, H., 4 ff., 128, 133, 136, 138 ff., 147, 150, 169 ff., 180 ff., 184 ff.
_Drosophila ampelophila_, 204 ff., 237, 243, 322, 347, 366
Egg, as the future embryo, 8, 9, 70, 126, 151; artificial parthenogenesis of, 95 ff.; organisms from, 128 ff.; determining unity of organism, 151-152; chromosomes in, 198 ff.
Egg structure, 129 ff.; influence of centrifugal force on, 135; and regulation, 139, 140, 141; and fluidity of protoplasm, 141
Ehrlich, 45, 322, 332 ff., 341; side-chain theory of, 88, 188
Electromotive forces, origin in living organs, 140
Environment, influence of, 286 ff.; temperature, 288 ff., 344 ff.; salinity, 306; adaptation to, 319
_Eudendrium_, 260, 261, 269, 277, 278, 326
Fertilization, heterogeneous, 48 ff., 51, 73 ff.; specificity in, 71 ff.; and oxidation, 117 ff.; and permeability, 119 ff.