The Germ-plasm : a theory of heredity / by August Weismann ; translated by W. Newton Parker and Harriet Ronnfeldt.

  • Weismann, August, 1834-1914.
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: The Germ-plasm : a theory of heredity / by August Weismann ; translated by W. Newton Parker and Harriet Ronnfeldt. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    Increase of a character by crossing, 424 Individual prepotency, 291 Ivy, III; dichogeny in, 380 Jager, Gustav, supposed priority as regards the hypothesis of the continuity of the germ-plasm, 200 Kennel, regeneration of beak of stork, 125; division, 150 Kiwi (Apteryx), disappearance of wings, 82 Kleinenberg, development of Lum- bricus trapezoides, 170 Kolreutter, crossing of Nicotiana rustica and N. paniculata, 261, 269 ; on recrossing, 305 Kowalewsky, on supernumerary toes of horses, 334 Kraepelin, investigations on her- maphrodite bees, 361 Lamarck, on the transmission of acquired characters, 395 Lang, A., the regenerative faculty as an arrangement for protec- tion, 93 ; budding in hydroids, 155 Leptodora hyalina, development of, 176; sexual characters of, and the theory of determinants, 363 Leuckart, Rudolph, discovery of parthenogenesis in bees, 356 ; on the combination of secondary sexual characters in hermaphro- dite bees, 360 Leydig, regeneration in' lizards, 110, 116 Liebscher, crossing of Hordeum steudelii and H. trifurcatum, 301 Loeb, gemmation in Tubularia mesembryanthemum, 216 Lumbriculus, regeneration in, 126, Lucas, Prosper, on transmission ot polydactylism, 373 LycEena, as illustration of the theory of determinants, 58, 62 ; Z. adonis and L. agestis, 87; colouring and dimorphism of, 359, 373 5 variation in, 422 Marrubium vaillantii, 270 Marsh, on supernumerary toes in horses, 334 Medusae, formation of germ-cells, 187; degeneration into a mere gonophore, 187 Mesohippus, 334 Meyer, O. E., on molecules, 86 Micellar theory, 41 Miescher-Rusch, on nuclein, 50 Morphoplasm, 38 Mules, transverse stripes of, indi- cating reversion, 316; theoretical explanation of stripes, 329; patho- logical variation, 429 Miiller, Josef, ' gamomachia ' and ' gamophagia,' 296 Nageli, Carl von, physiological theory of descent, 9 ; the heredi- tary substance constitutes only an infinitesimal part of the egg- cell, 22 ; the ' micella,' 41 ; on variation, 411 ; the ibis and crocodile in connection with varia- tion, 416; bud-variation, 442 Nais, regeneration of, 126 Naudin, experiments with Datura, 321 Nicotiana rustica and N. paniculata, crosses between, 261 ; difference in the flowers of, 267 ; N. alata and iV. la7igsdorffii, 300 Nipples, supernumerary, in human beings as examples of reversion, 333 Nitsche, O., budding in Polyzoa, 158 Nussbaum, artificial division in In- fusoria, 52; idea of the continuity of germ-cells, 201 Oka, budding in Polyzoa, 159 Ontogeny, or development of the individual, 32; depends upon gradual changes in the germ- plasm, 32 ; part played by deter- minants in the course of, 80 ; can only be explained by ' evolution,' and not; by epigenesis, 138; resulting from the union of the germ-plasm of two parents, 253