n C. F. Wolff, 119
Fertilisation, 291 f.n.
Membrane and Cartilage Bones, 309-10
Biogenetic Law, 352, 354-5
Von Baer's Law, 354
Intrinsic Laws of Evolution, 354-5, 356-7
Homology not necessarily Homogeny, 355-7
Unity of Plan not necessarily due to Community of Descent, 355-7
On Phylogenetic Speculation, 356

Hertwig, O. and R.--
Coelom Theory, 297-8
Nervous System of Coelentera, 299

Heterochrony, 259, 348, 349-52

Heterogeneous Generation (Koelliker), 243

Heterotopy, 259

Hilgendorf, 359

Hill, 311

Hippocratic Treatises, 2

His, W., 206 f.n., 209 f.n.
Causal Morphology, 316
Cytoplasm of Egg, Organ-forming Stuffs, 333
Specific Distinctness of Embryos, 353

Histological Differentiation (von Baer), 117-8

Histology. _See also_ "Cell-Theory"
Malpighi, 20
Stensen, 21
Bichat, 29-30, 169, 178
Von Baer, 117-8
Schwann, 178
Remak, 209-12

Hofer, B., 330

Hofmeister, 185

Homogeny, 267, 303, 355

Homology, 168, 303, 355-7. _See also_ "Connections, Principle of," and
"Embryological Criterion"
Aristotle, 7-10
Belon, 18
Buffon, 27
Goethe, 47
E. Geoffroy, 53, 71
Serres, 80
Owen, 107-9
Lamarck, 227
C. Darwin, 234-5, 247
Haeckel, 251
Gegenbaur, 261, 263, 265, 266-7
Giard, 273
Semper, 279
O. Hertwig, 355-7
Braun, 355

Homology, Genetic Definition of--
Gegenbaur, 266
Lankester, 267
O. Hertwig's criticism, 355-7

Homoplasy, 267

Hooke, R., 20, 169

Houssay, F., 19 f.n., 333

Hubrecht, A. A. W., 284, 295 f.n., 301, 305-6

Hunter, J., 22, 315

Huschke, 134-5, 136, 141, 146

Huxley, T. H., 157, 238, 247
On Rathke, 154 f.n.
Embryological Criterion, 158-9, 166
Embryological Archetype, 159-61
Criticism of Vertebral Theory of Skull, 161-2
Membrane and Cartilage Bones, 166-7
On Archetype, 204
Germ-Layer Theory, 208, 289
Criticism of Three-fold Parallelism, 230 f.n.
Coelom, 297
Ancestry of Marsupials, 311

Hyatt, A., 359, 361

INSTINCT and Morphogenesis, Analogy of, vi., 307, 312
Lamarck, 220, 226

JACOBSON , 164

Jaeger, G., 249 f.n.

_Jardin des Plantes_, Paris, 19

Jenkinson, J. W., 347 f.n.
On His, 316

Jones, Wharton, 138, 176

Julin, C., 271, 285

Jussieu, de, 40

KANT, I.--
Teleology, 35, 213, 242
Unity of Plan, 46, 213-4
Evolution, 213-4

Keibel, F., 348, 349-50

Kerkring, 131

Kielmeyer, 89, 90, 96

Kieser, 90

Kleinenberg, N., 277

Kohlb